Published:25 September 2025 In the article“MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2”(BIOCELL,2021,Vol.45,No.3,pp.627-638.doi:10.32604/biocell.2021.01349...Published:25 September 2025 In the article“MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2”(BIOCELL,2021,Vol.45,No.3,pp.627-638.doi:10.32604/biocell.2021.013496),there is an error in the Fig.3.In order to ensure the scientific and rigorous nature of our academic publications,we made a correction about Fig.3 correspondingly.展开更多
Low dark current photocathode guns are highly desired for high-brightness continuous-wave operations.Direct-current superconducting radio-frequency(DC-SRF)gun,a hybrid photocathode gun combining a DC gap and an SRF ca...Low dark current photocathode guns are highly desired for high-brightness continuous-wave operations.Direct-current superconducting radio-frequency(DC-SRF)gun,a hybrid photocathode gun combining a DC gap and an SRF cavity,effectively isolates the photocathode from the SRF cavity and offers significant advantages in terms of minimizing dark current levels.This paper presents an in-depth analysis of the dark current of a newly developed high-brightness DC-SRF photocathode gun(DC-SRF-Ⅱ gun).Particularly,a systematic experimental investigation of the dark current was conducted,and a comprehensive understanding of its formation was achieved through compliant simulations and measurements.Additionally,measures for attaining sub-nanoampere dark currents in the DC-SRF-Ⅱ gun are presented,including design considerations,cavity processing,assembly,and conditioning.The findings of this study establish a strong foundation for achieving high-performance operation of the DC-SRF-Ⅱ gun and provide a valuable reference for other photocathode guns.展开更多
Reconstructed embryos derived from intersubspecies somatic cell nuclear transfer （SCNT） have poorer developmental potential than those from intrasubspecies SCNT. Based on our previous study that Holstein dairy bovi...Reconstructed embryos derived from intersubspecies somatic cell nuclear transfer （SCNT） have poorer developmental potential than those from intrasubspecies SCNT. Based on our previous study that Holstein dairy bovine （HD） mitochondrial DNA （mtDNA） haplotype compatibility between donor karyoplast and recipient cytoplast is crucial for SCNT embryo development, we performed intersubspecies SCNT using HD as donor karyoplast and Luxi yellow heifer （LY） as recipient cytoplast according to mtDNA haplotypes determined by polymerase chain reaction- restriction fragment length polymorphism （PCR-RFLP） analysis. The results demonstrated that intersubspecies mtDNA homotype SCNT embryos had higher pre- and post-implantation developmental competence than intrasubspecies mtDNA heterotype embryos as well as improved blastocyst reprogramming status, including normal H3K9 dimethylation pattern and promoter hypomethylation of pluripotent genes such as Oct4 and Sox2, suggesting that intersubspecies SCNT using LY oocytes maintains HD cloning efficiency and may reprogram HD nuclei to develop into a normal cloned animal ultimately. Our results indicated that karyoplast-cytoplast interactions and mtDNA haplotype compatibility may affect bovine intersubspecies SCNT efficiency. This study on bovine intersubspecies SCNT is valuable for understanding the mechanisms of mtDNA haplotype compatibility between karyoplast and cytoplast impacting the bovine SCNT efficiency, and provides an alternative and economic resource for HD cloning.展开更多
Mesenchymal stem pells(MSCs)have been extensively used in the field of tissue engineering and regenerative medicine.The effect of surface properties on the differentiation of MSCs is a very important issue for the des...Mesenchymal stem pells(MSCs)have been extensively used in the field of tissue engineering and regenerative medicine.The effect of surface properties on the differentiation of MSCs is a very important issue for the design and fabrication of scaffolds or biomaterials.This review is mainly focused on the morphological or topographic characteristics of cell adhesion substrate,i.e.cell area and shape for individual cell,cell density and cell-cell contact for multiple cells,substrate roughnessridge width,micropillar height,nanoparticle diameter and aspect ratio of nanowire.The results from different studies were quantitativcly analyzed using comparable or unified parameters and definitions under the specific experimental conditions such as cell source,culture time,induction medium,matrix material and differentiation marker.Some interesting phenomena and properties were discovered by this integrated and systematic analysis,which might give insights into the regulatory mechanism of surface morphology or topography on MSCs differentiation.展开更多
The compatibility of the gate dielectrics with semiconductors is vital for constructing efficient conducting channel for high charge transport.However,it is still a highly challenging mission to clearly clarify the re...The compatibility of the gate dielectrics with semiconductors is vital for constructing efficient conducting channel for high charge transport.However,it is still a highly challenging mission to clearly clarify the relationship between the dielectric layers and the chemical structure of semiconductors,especially vacuum-deposited small molecules.Here,interfacial molecular screening of polyimide(Kapton)dielectric in organic field-effect transistors(OFETs)is comprehensively studied.It is found that the semiconducting small molecules with alkyl side chains prefer to form a high-quality charge transport layer on polyimide(PI)dielectrics compared with the molecules without alkyl side chains.On this basis,the fabricated transistors could reach the mobility of 1.2 cm^(2) V^(−1)s^(−1) the molecule with alkyl side chains on bare PI dielectric.What is more,the compatible semiconductor and dielectric would further produce a low activation energy(E_(A))of 3.01 meV towards efficient charge transport even at low temperature(e.g.,100 K,0.9 cm^(2) V^(−1)s^(−1)).Our research provides a guiding scheme for the construction of high-performance thin-film field-effect transistors based on PI dielectric layer at room and low temperatures.展开更多
Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are...Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are not to be well studied.Here,we validated that the expression of miR-16-5p was decreased significantly in NSCLC samples and cell lines.The correlation between the clinicopathological features of NSCLC and the miR-16-5p expression showed that the expression of miR-16-5p in non-small cell lung cancer was linked with the advanced TNM stage,positive lymph node metastasis,with short overall survival(OS).Also,a negative correlation between miR-16-5p and Fermitin family member 2(FERMT2)was observed,implying there may be a potential link about their regulation.The hypothesis was further confirmed by in-silico analysis and dual-luciferase reporter assay.Moreover,we demonstrated that the transfections of miR-16-5p mimics could alter some biological characteristics of NSCLC cells remarkably accomplished by the expression variance of FERMT2 in vitro and in vivo assays.Summarily,this study demonstrated that miR-16-5p,as a tumor suppression factor in NSCLC by targeting FERMT2,could serve as one promising biomarker in the prediction for NSCLC patients.展开更多
The development of n-type semiconductor is still far behind that of p-type semiconductor on account of the challenges in enhancing carrier mobility and environmental stability.Herein,by blending with the polymers,n-ty...The development of n-type semiconductor is still far behind that of p-type semiconductor on account of the challenges in enhancing carrier mobility and environmental stability.Herein,by blending with the polymers,n-type ultrathin crystalline thin film was successfully prepared by the method of meniscus-guided coating.Remarkably,the n-type crystalline films exhibit ultrathin thickness as low as 5 nm and excellent mobility of 1.58 cm^(2) V^(-1) s^(-1),which is outstanding in currently reported organic n-type transistors.Moreover,the PS layer provides a high-quality interface with ultralow defect which has strong resistance to external interference with excellent long-term stability,paving the way for the application of n-type transistors in logic circuits.展开更多
Transmission towers play a crucial role in overhead transmission line systems and are the key target of transmission line inspections.With the help of remote sensing technology,transmission towers can be effectively d...Transmission towers play a crucial role in overhead transmission line systems and are the key target of transmission line inspections.With the help of remote sensing technology,transmission towers can be effectively detected in wide areas at reasonable costs and in a relatively short time period.However,it is difficult to identify the type of transmission towers in optical remote sensing images due to detail degradation caused by long-distance and high-altitude imaging.This paper proposes a transmission tower detection method in optical remote sensing images using an oriented object detector and object and shadow joint detection.To enrich the information,the transmission towers and their shadows are jointly detected through a CenterNet detector with an orientation prediction branch.To improve the detection accuracy of difficult objects,attention and deformable convolutional network modules are introduced to the backbone and orientation prediction branches,respectively.Considering the orientation and the aspect ratio of the objects and shadows,a focal loss function with an aspect ratio is employed to further improve the accuracy.Object and shadow joint detection are separately realized through the one-box and multi-box detection strategies.A transmission tower dataset RSITT labeled with horizontal and oriented boxes is established.Experiments conducted on the RSITT dataset have demonstrated that the detection accuracy and recall rate of the proposed joint detection algorithm reached 73.2%and 95.2%.展开更多
Status of the transformer is highly associated with safe and stable operation of the whole power system.Since the vibration signal is generated along with operation of the transformer and can indicate change of equipm...Status of the transformer is highly associated with safe and stable operation of the whole power system.Since the vibration signal is generated along with operation of the transformer and can indicate change of equipment operation status in real-time,fault diagnosis based on the vibration signal is a feasible method to monitor status of the transformer.In this paper,an end-to-end multi-branch-attention-multiscale CNN(MAMCNN)framework is proposed based on a one-dimensional convolutional neural network,in which multi-branch inputs,multiscale residual learning,and attention mechanism-guided multi-branch fusion techniques are integrated to identify states of the 220 kV transformer.To address the problem of small samples for transformer fault diagnosis,the proposed method first tests on a public dataset of rolling element bearing vibration.Results show that MAMCNN still has good differentiation for fault features under strong noise and fluctuating operating conditions without denoising,and has high accuracy and stability for state identification.MAMCNN is then applied to 220 kV transformer fault diagnosis based on vibration signals,and results exhibit high accuracy,rapid and stable convergence in identifying four transformer states.展开更多
As a new paradigm of material science,two-dimensional(2D)heterostructured composites have attracted extensive interests because of combining the collective advantages and collaborative characteristics of individual bu...As a new paradigm of material science,two-dimensional(2D)heterostructured composites have attracted extensive interests because of combining the collective advantages and collaborative characteristics of individual building blocks.Molybdenum disulfide(MoS_(2))has demonstrated great promise as a low-cost substitute to platinum-based catalysts for electrochemical hydrogen production.However,the broad adoption of MoS_(2)is hindered by its limited number of active sites and low inherent electrical conductivity.One of the promising methods to further activate MoS_(2)is coupling engineering.Here,we demonstrate for the first time the synthesis of 2D MXene-MoS_(2)nanocomposites through chemical vapor deposition(CVD)approach,thus leading to precise design in structure type and orientation.The computational results show that nanocomposites have metallic properties.Owing to their unique 2D/2D structure,MXene-MoS_(2)nanocomposites exhibit more active catalytic sites,resulting in higher electrochemical performance,as inherited from parent excellent characteristics,and a much lower overpotential of~69 mV at a current density of 10 mA·cm^(-2) is achieved.This work paves the way to employ CVD method by coupling engineering to construct 2D nanocomposites for energy storage applications.展开更多
The investigation of n-type doping holds a significant interest for the application of thermoelectrics.Herein,the doping of an indandione-terminated compound Q-4F with a singlet open-shell ground state was studied usi...The investigation of n-type doping holds a significant interest for the application of thermoelectrics.Herein,the doping of an indandione-terminated compound Q-4F with a singlet open-shell ground state was studied using two n-dopants N-DMBI and LCV.Both of these two dopants can effectively dope Q-4F due to the large offset between the singly occupied molecular orbital(SOMO)of dopants and the lowest unoccupied molecular orbital(LUMO)of Q-4F.N-DMBI has a higher doping ability than LCV as demonstrated by the UV-vis-NIR and EPR measurements.However,in comparison to N-DMBI doped Q-4F,LCV doped system exhibits much higher electrical conductivity and power factor due to its unperturbed molecular packing and favorable morphology after doping.The optimal conductivity of LCV doped Q-4F is 7.16×10^(-2)±0.16 S·cm^(-1) and the highest power factor reaches 12.3±0.85μW·m–1·K^(-2).These results demonstrate that the modulation of n-dopants is a powerful strategy to balance the doping efficiency and microstructure toward a maximum thermoelectric performance.展开更多
Organicfield-effect transistors(OFETs)show great application potential in organic electronic and optoelectronicfields due to their excellent mechanicalflexibility,low cost,and solution processing.However,grain boundaries...Organicfield-effect transistors(OFETs)show great application potential in organic electronic and optoelectronicfields due to their excellent mechanicalflexibility,low cost,and solution processing.However,grain boundaries(GBs)disrupt the aggrega-tion state of organic semiconductor(OSC)films and hinder electrical performance and stability,which limits the application of OFETs.Besides,the sensitive nature of GBs is widely used in sensing,but detailed descriptions of the GBs are scarce.This review aims tofill this knowledge gap.The role of GBs and their effect on the per-formance and stability of OFETs are analyzed,followed by a detailed summary of the characterization of GBs.Then,strategies for suppressing the negative effects of GBs and utilizing the sensitive nature of GBs for application are proposed.Finally,potential research directions for GBs in OFETs are discussed.展开更多
文摘Published:25 September 2025 In the article“MiR-16-5p plays an inhibitory role in human non-small cell lung cancer through Fermitin family member 2”(BIOCELL,2021,Vol.45,No.3,pp.627-638.doi:10.32604/biocell.2021.013496),there is an error in the Fig.3.In order to ensure the scientific and rigorous nature of our academic publications,we made a correction about Fig.3 correspondingly.
基金partially supported by the National Key Research and Development Program of China(Nos.2016YFA0401904 and 2017YFA0701001)the State Key Laboratory of Nuclear Physics and Technology,Peking University(Nos.NPT2022ZZ01).
文摘Low dark current photocathode guns are highly desired for high-brightness continuous-wave operations.Direct-current superconducting radio-frequency(DC-SRF)gun,a hybrid photocathode gun combining a DC gap and an SRF cavity,effectively isolates the photocathode from the SRF cavity and offers significant advantages in terms of minimizing dark current levels.This paper presents an in-depth analysis of the dark current of a newly developed high-brightness DC-SRF photocathode gun(DC-SRF-Ⅱ gun).Particularly,a systematic experimental investigation of the dark current was conducted,and a comprehensive understanding of its formation was achieved through compliant simulations and measurements.Additionally,measures for attaining sub-nanoampere dark currents in the DC-SRF-Ⅱ gun are presented,including design considerations,cavity processing,assembly,and conditioning.The findings of this study establish a strong foundation for achieving high-performance operation of the DC-SRF-Ⅱ gun and provide a valuable reference for other photocathode guns.
基金This work was supported by the grants from the National High-Tech R&D Program of China(No.2007AA100502)the National Science and Technology Major Project of China (No.2008ZX08007-004)the National Natural Science Foundation of China(No.30770242)
文摘Reconstructed embryos derived from intersubspecies somatic cell nuclear transfer （SCNT） have poorer developmental potential than those from intrasubspecies SCNT. Based on our previous study that Holstein dairy bovine （HD） mitochondrial DNA （mtDNA） haplotype compatibility between donor karyoplast and recipient cytoplast is crucial for SCNT embryo development, we performed intersubspecies SCNT using HD as donor karyoplast and Luxi yellow heifer （LY） as recipient cytoplast according to mtDNA haplotypes determined by polymerase chain reaction- restriction fragment length polymorphism （PCR-RFLP） analysis. The results demonstrated that intersubspecies mtDNA homotype SCNT embryos had higher pre- and post-implantation developmental competence than intrasubspecies mtDNA heterotype embryos as well as improved blastocyst reprogramming status, including normal H3K9 dimethylation pattern and promoter hypomethylation of pluripotent genes such as Oct4 and Sox2, suggesting that intersubspecies SCNT using LY oocytes maintains HD cloning efficiency and may reprogram HD nuclei to develop into a normal cloned animal ultimately. Our results indicated that karyoplast-cytoplast interactions and mtDNA haplotype compatibility may affect bovine intersubspecies SCNT efficiency. This study on bovine intersubspecies SCNT is valuable for understanding the mechanisms of mtDNA haplotype compatibility between karyoplast and cytoplast impacting the bovine SCNT efficiency, and provides an alternative and economic resource for HD cloning.
基金the National Natural Science Foundation of China[Grants 11572043 and 11372043(BH)].
文摘Mesenchymal stem pells(MSCs)have been extensively used in the field of tissue engineering and regenerative medicine.The effect of surface properties on the differentiation of MSCs is a very important issue for the design and fabrication of scaffolds or biomaterials.This review is mainly focused on the morphological or topographic characteristics of cell adhesion substrate,i.e.cell area and shape for individual cell,cell density and cell-cell contact for multiple cells,substrate roughnessridge width,micropillar height,nanoparticle diameter and aspect ratio of nanowire.The results from different studies were quantitativcly analyzed using comparable or unified parameters and definitions under the specific experimental conditions such as cell source,culture time,induction medium,matrix material and differentiation marker.Some interesting phenomena and properties were discovered by this integrated and systematic analysis,which might give insights into the regulatory mechanism of surface morphology or topography on MSCs differentiation.
基金financial support from National Key Research and Development Program(Nos.2021YFA0717900,2022YFE0124200)National Natural Science Foundation of China(Nos.62004138,52273190,61905121,U2241221)Haihe Laboratory of Sustainable Chemical Transformations.
文摘The compatibility of the gate dielectrics with semiconductors is vital for constructing efficient conducting channel for high charge transport.However,it is still a highly challenging mission to clearly clarify the relationship between the dielectric layers and the chemical structure of semiconductors,especially vacuum-deposited small molecules.Here,interfacial molecular screening of polyimide(Kapton)dielectric in organic field-effect transistors(OFETs)is comprehensively studied.It is found that the semiconducting small molecules with alkyl side chains prefer to form a high-quality charge transport layer on polyimide(PI)dielectrics compared with the molecules without alkyl side chains.On this basis,the fabricated transistors could reach the mobility of 1.2 cm^(2) V^(−1)s^(−1) the molecule with alkyl side chains on bare PI dielectric.What is more,the compatible semiconductor and dielectric would further produce a low activation energy(E_(A))of 3.01 meV towards efficient charge transport even at low temperature(e.g.,100 K,0.9 cm^(2) V^(−1)s^(−1)).Our research provides a guiding scheme for the construction of high-performance thin-film field-effect transistors based on PI dielectric layer at room and low temperatures.
基金was supported by grants from the National Natural Science Foundation of China(No.81772281)the Shandong Province Taishan Scholar Project(No.ts201712067)+1 种基金the Major Research and Development Program of Shandong Province(No.2017GSF18124)the Natural Science Foundation of Shandong Province(No.ZR2020MH218).
文摘Increasing evidence indicates that aberrant expressions of some microRNAs are associated with cancer progression.However,the roles and biological mechanisms of miRNA-16-5p in human non-small cell lung cancer(NSCLC)are not to be well studied.Here,we validated that the expression of miR-16-5p was decreased significantly in NSCLC samples and cell lines.The correlation between the clinicopathological features of NSCLC and the miR-16-5p expression showed that the expression of miR-16-5p in non-small cell lung cancer was linked with the advanced TNM stage,positive lymph node metastasis,with short overall survival(OS).Also,a negative correlation between miR-16-5p and Fermitin family member 2(FERMT2)was observed,implying there may be a potential link about their regulation.The hypothesis was further confirmed by in-silico analysis and dual-luciferase reporter assay.Moreover,we demonstrated that the transfections of miR-16-5p mimics could alter some biological characteristics of NSCLC cells remarkably accomplished by the expression variance of FERMT2 in vitro and in vivo assays.Summarily,this study demonstrated that miR-16-5p,as a tumor suppression factor in NSCLC by targeting FERMT2,could serve as one promising biomarker in the prediction for NSCLC patients.
基金the financial support of the National Key Research and Development Program(No.2022YFF1202700)National Natural Science Foundation of China(No.52121002)the Haihe Laboratory of Sustainable Chemical Transformations.
文摘The development of n-type semiconductor is still far behind that of p-type semiconductor on account of the challenges in enhancing carrier mobility and environmental stability.Herein,by blending with the polymers,n-type ultrathin crystalline thin film was successfully prepared by the method of meniscus-guided coating.Remarkably,the n-type crystalline films exhibit ultrathin thickness as low as 5 nm and excellent mobility of 1.58 cm^(2) V^(-1) s^(-1),which is outstanding in currently reported organic n-type transistors.Moreover,the PS layer provides a high-quality interface with ultralow defect which has strong resistance to external interference with excellent long-term stability,paving the way for the application of n-type transistors in logic circuits.
基金supported by the National Key R&D Program of China(2020YFB0905900).
文摘Transmission towers play a crucial role in overhead transmission line systems and are the key target of transmission line inspections.With the help of remote sensing technology,transmission towers can be effectively detected in wide areas at reasonable costs and in a relatively short time period.However,it is difficult to identify the type of transmission towers in optical remote sensing images due to detail degradation caused by long-distance and high-altitude imaging.This paper proposes a transmission tower detection method in optical remote sensing images using an oriented object detector and object and shadow joint detection.To enrich the information,the transmission towers and their shadows are jointly detected through a CenterNet detector with an orientation prediction branch.To improve the detection accuracy of difficult objects,attention and deformable convolutional network modules are introduced to the backbone and orientation prediction branches,respectively.Considering the orientation and the aspect ratio of the objects and shadows,a focal loss function with an aspect ratio is employed to further improve the accuracy.Object and shadow joint detection are separately realized through the one-box and multi-box detection strategies.A transmission tower dataset RSITT labeled with horizontal and oriented boxes is established.Experiments conducted on the RSITT dataset have demonstrated that the detection accuracy and recall rate of the proposed joint detection algorithm reached 73.2%and 95.2%.
基金supported by the Science and Technology Project of State Grid Corporation of China(5700-202121258A-0-0-00).
文摘Status of the transformer is highly associated with safe and stable operation of the whole power system.Since the vibration signal is generated along with operation of the transformer and can indicate change of equipment operation status in real-time,fault diagnosis based on the vibration signal is a feasible method to monitor status of the transformer.In this paper,an end-to-end multi-branch-attention-multiscale CNN(MAMCNN)framework is proposed based on a one-dimensional convolutional neural network,in which multi-branch inputs,multiscale residual learning,and attention mechanism-guided multi-branch fusion techniques are integrated to identify states of the 220 kV transformer.To address the problem of small samples for transformer fault diagnosis,the proposed method first tests on a public dataset of rolling element bearing vibration.Results show that MAMCNN still has good differentiation for fault features under strong noise and fluctuating operating conditions without denoising,and has high accuracy and stability for state identification.MAMCNN is then applied to 220 kV transformer fault diagnosis based on vibration signals,and results exhibit high accuracy,rapid and stable convergence in identifying four transformer states.
基金Authors acknowledge the financial support from the National Key R&D Program of China(Nos.2021YFA0717900 and 2022YFC3401200)the National Natural Science Foundation of China(No.52002267)Natural Science Foundation of Tianjin City(Nos.22JCJQJ00080 and 20JCQNJC01990).
文摘As a new paradigm of material science,two-dimensional(2D)heterostructured composites have attracted extensive interests because of combining the collective advantages and collaborative characteristics of individual building blocks.Molybdenum disulfide(MoS_(2))has demonstrated great promise as a low-cost substitute to platinum-based catalysts for electrochemical hydrogen production.However,the broad adoption of MoS_(2)is hindered by its limited number of active sites and low inherent electrical conductivity.One of the promising methods to further activate MoS_(2)is coupling engineering.Here,we demonstrate for the first time the synthesis of 2D MXene-MoS_(2)nanocomposites through chemical vapor deposition(CVD)approach,thus leading to precise design in structure type and orientation.The computational results show that nanocomposites have metallic properties.Owing to their unique 2D/2D structure,MXene-MoS_(2)nanocomposites exhibit more active catalytic sites,resulting in higher electrochemical performance,as inherited from parent excellent characteristics,and a much lower overpotential of~69 mV at a current density of 10 mA·cm^(-2) is achieved.This work paves the way to employ CVD method by coupling engineering to construct 2D nanocomposites for energy storage applications.
基金supported by the National Key R&D Program of China(2021YFA0717900)the National Natural Science Foundation of China(Nos.22222506,52073209,and 52121002)and the Fundamental Research Funds for the Central Universities.
文摘The investigation of n-type doping holds a significant interest for the application of thermoelectrics.Herein,the doping of an indandione-terminated compound Q-4F with a singlet open-shell ground state was studied using two n-dopants N-DMBI and LCV.Both of these two dopants can effectively dope Q-4F due to the large offset between the singly occupied molecular orbital(SOMO)of dopants and the lowest unoccupied molecular orbital(LUMO)of Q-4F.N-DMBI has a higher doping ability than LCV as demonstrated by the UV-vis-NIR and EPR measurements.However,in comparison to N-DMBI doped Q-4F,LCV doped system exhibits much higher electrical conductivity and power factor due to its unperturbed molecular packing and favorable morphology after doping.The optimal conductivity of LCV doped Q-4F is 7.16×10^(-2)±0.16 S·cm^(-1) and the highest power factor reaches 12.3±0.85μW·m–1·K^(-2).These results demonstrate that the modulation of n-dopants is a powerful strategy to balance the doping efficiency and microstructure toward a maximum thermoelectric performance.
基金Funding information National Key Research and Development Program,Grant/Award Numbers:2018YFA0703200,2022YFF1202700National Natural Science Foundation of China,Grant/Award Numbers:52225304,52073210,52203236,52121002Natural Science Foundation of Tanjin City,Grant/Award Numbers:19JCJQJC62600,19JCZDJC37400。
文摘Organicfield-effect transistors(OFETs)show great application potential in organic electronic and optoelectronicfields due to their excellent mechanicalflexibility,low cost,and solution processing.However,grain boundaries(GBs)disrupt the aggrega-tion state of organic semiconductor(OSC)films and hinder electrical performance and stability,which limits the application of OFETs.Besides,the sensitive nature of GBs is widely used in sensing,but detailed descriptions of the GBs are scarce.This review aims tofill this knowledge gap.The role of GBs and their effect on the per-formance and stability of OFETs are analyzed,followed by a detailed summary of the characterization of GBs.Then,strategies for suppressing the negative effects of GBs and utilizing the sensitive nature of GBs for application are proposed.Finally,potential research directions for GBs in OFETs are discussed.
