Flexible electrochromic devices(FECDs)demonstrate significant potential for applications in wearable elec-tronics,military camouflage,and flexible smart displays.As a crucial electrochromic material,poly(3,4-ethylened...Flexible electrochromic devices(FECDs)demonstrate significant potential for applications in wearable elec-tronics,military camouflage,and flexible smart displays.As a crucial electrochromic material,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS)is widely used in FECDs due to its excellent mechanical flexibility,tunable conductivity,and non-toxicity.However,the manufacturing process for patterned PEDOT:PSS electrochromic devices remains intricate,costly,and challenging to personalize.To address this challenge,we have developed a 3D-printable ink with controllable rheological properties through a concentration-tuning strategy,enabling programmable,patterned printing of PEDOT-based conductive polymer electrochromic layers.The 3D-printed FECDs exhibit outstanding electrochromic performance,including a high optical contrast(up to 47.9%at 635 nm),fast response times(t_(c)=1.6 s;t_(b)=0.6 s),high coloration efficiency(352 cm^(2) C^(-1)),and good cycling stability(with only a 9.3%decrease in optical contrast after 100 electrochemical cycles).Finally,we utilize 3D printing technology to construct flexible,patterned PEDOT:PSS electrochromic devices with bespoke butterfly designs.This work establishes the theoretical foundation for the application of 3D printing technology in PEDOT:PSS flexible electrochromic devices.展开更多
Bioelectronics have gained substantial research attention owing to their potential applications in health monitoring and diagnose,and greatly promoted the development of biomedicine.Recently,poly(3,4-ethylenedioxythio...Bioelectronics have gained substantial research attention owing to their potential applications in health monitoring and diagnose,and greatly promoted the development of biomedicine.Recently,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS)hydrogels have arose as a promising candi-date for the next-generation bioelectronic interface due to its high-conductivity,versatility,flexibility and biocompatibility.In this review,we highlight the recent advances of PEDOT:PSS hydrogels,including the gelation methods and modification strategies,and summarize their wide applications in different type of sensors and tissue engineering in detail.We expect that this work will provide valuable information regarding the functionalizations and applications of PEDOT:PSS hydrogels.展开更多
The conductive polymer poly(3,4-thylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)exhibits po-tential in the development of flexible devices due to its unique conjugated structure and water-solubility characteri...The conductive polymer poly(3,4-thylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)exhibits po-tential in the development of flexible devices due to its unique conjugated structure and water-solubility characteristics.To address the incompressibility of the original PEDOT:PSS aerogel without compromis-ing its high conductivity,a stable interpenetrating polymer network(IPN)was self-assembled by guiding the molecular motion within PEDOT:PSS and introducing multi-walled carbon nanotubes(MWCNTs).By combining critical surface removal,directional freeze-drying,and polydimethylsiloxane(PDMS)reinforce-ment processes,a hydrophobic PDMS@MWCNTs/PP aerogel with a highly oriented porous structure and high strength was prepared.Under the synergistic effect of MWCNTs/PEDOT:PSS electroactive scaffold,the composite aerogel exhibited a high sensitivity of up to 16.603 kPa^(-1) at 0-2 kPa,a fast response time of 74 ms,and excellent repeatability.Moreover,the sensor possessed hydrophobicity with a good water contact angle of 137°The sensor could serve as a wearable electronic monitoring device to achieve ac-curate and sensitive detection of human motion including large-scale human activities and tiny muscle movements.Therefore,our findings provide a new direction to fabricate high-performance piezoresistive sensors based on three-dimensional(3D)conductive polymer active scaffolds,demonstrating their great potential for flexible electronics,human-computer interaction,and a wide range of applications under special working conditions.展开更多
In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grow...In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grown Sn:α-Ga_(2)O_(3) film.This approach provides a facile and low-cost p-PEDOT:PSS/n-Sn:α-Ga_(2)O_(3) spin-coating method that facilitates self-powering per-formance through p-n junction formation.A typical type-Ⅰheterojunction is formed at the interface of Sn:α-Ga_(2)O_(3) film and PEDOT:PSS,and contributes to a significant photovoltaic effect with an open-circuit voltage(Voc)of 0.4 V under the 254 nm ultra-violet(UV)light.When operating in self-powered mode,the HJD exhibits excellent photo-response performance including an outstanding photo-current of 10.9 nA,a rapid rise/decay time of 0.38/0.28 s,and a large on/off ratio of 91.2.Additionally,the HJD also possesses excellent photo-detection performance with a high responsivity of 5.61 mA/W and a good detectivity of 1.15×1011 Jones at 0 V bias under 254 nm UV light illumination.Overall,this work may explore the potential range of self-pow-ered and high-performance UV photodetectors.展开更多
基金supported by the Natural Science Foundation of Jiangxi Province(20232ACB204002&20232BAB202044)Jiangxi Provincial Key Laboratory of Flexible Electronics(20212BCD42004&20242BCC32010).
文摘Flexible electrochromic devices(FECDs)demonstrate significant potential for applications in wearable elec-tronics,military camouflage,and flexible smart displays.As a crucial electrochromic material,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS)is widely used in FECDs due to its excellent mechanical flexibility,tunable conductivity,and non-toxicity.However,the manufacturing process for patterned PEDOT:PSS electrochromic devices remains intricate,costly,and challenging to personalize.To address this challenge,we have developed a 3D-printable ink with controllable rheological properties through a concentration-tuning strategy,enabling programmable,patterned printing of PEDOT-based conductive polymer electrochromic layers.The 3D-printed FECDs exhibit outstanding electrochromic performance,including a high optical contrast(up to 47.9%at 635 nm),fast response times(t_(c)=1.6 s;t_(b)=0.6 s),high coloration efficiency(352 cm^(2) C^(-1)),and good cycling stability(with only a 9.3%decrease in optical contrast after 100 electrochemical cycles).Finally,we utilize 3D printing technology to construct flexible,patterned PEDOT:PSS electrochromic devices with bespoke butterfly designs.This work establishes the theoretical foundation for the application of 3D printing technology in PEDOT:PSS flexible electrochromic devices.
基金National Natural Science Foundation of China (No. 82272120)Natural Science Foundation of Zhejiang Province, China (Nos. LQ20F010011, LY18H180006)+2 种基金Key Research and Development Program of Zhejiang Province, China (No. 2022C03002)supported by MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Zhejiang University (No. 2022MSF**)the open research fund of Guangdong Provincial Key Laboratory of Advanced Biomaterials.
文摘Bioelectronics have gained substantial research attention owing to their potential applications in health monitoring and diagnose,and greatly promoted the development of biomedicine.Recently,poly(3,4-ethylenedioxythiophene):polystyrene sulfonate(PEDOT:PSS)hydrogels have arose as a promising candi-date for the next-generation bioelectronic interface due to its high-conductivity,versatility,flexibility and biocompatibility.In this review,we highlight the recent advances of PEDOT:PSS hydrogels,including the gelation methods and modification strategies,and summarize their wide applications in different type of sensors and tissue engineering in detail.We expect that this work will provide valuable information regarding the functionalizations and applications of PEDOT:PSS hydrogels.
基金supported by the Xi’an Science and Technology Plan Project(Nos.GXYD14.27 and GX2338)the Key Scientific Research Program of Shaanxi Provincial Depart-ment of Education(Nos.22JY046 and 21JY032)+1 种基金the Opening Project of Shanxi Key Laboratory of Advanced Manufacturing Tech-nology of North University of China(No.XJZZ202104)the General Project of Natural Science Basic Research Program of Shaanxi Provincial Department of Science and Technology(No.2023-JC-YB-424)。
文摘The conductive polymer poly(3,4-thylenedioxythiophene):poly(styrenesulfonate)(PEDOT:PSS)exhibits po-tential in the development of flexible devices due to its unique conjugated structure and water-solubility characteristics.To address the incompressibility of the original PEDOT:PSS aerogel without compromis-ing its high conductivity,a stable interpenetrating polymer network(IPN)was self-assembled by guiding the molecular motion within PEDOT:PSS and introducing multi-walled carbon nanotubes(MWCNTs).By combining critical surface removal,directional freeze-drying,and polydimethylsiloxane(PDMS)reinforce-ment processes,a hydrophobic PDMS@MWCNTs/PP aerogel with a highly oriented porous structure and high strength was prepared.Under the synergistic effect of MWCNTs/PEDOT:PSS electroactive scaffold,the composite aerogel exhibited a high sensitivity of up to 16.603 kPa^(-1) at 0-2 kPa,a fast response time of 74 ms,and excellent repeatability.Moreover,the sensor possessed hydrophobicity with a good water contact angle of 137°The sensor could serve as a wearable electronic monitoring device to achieve ac-curate and sensitive detection of human motion including large-scale human activities and tiny muscle movements.Therefore,our findings provide a new direction to fabricate high-performance piezoresistive sensors based on three-dimensional(3D)conductive polymer active scaffolds,demonstrating their great potential for flexible electronics,human-computer interaction,and a wide range of applications under special working conditions.
基金supported by the National Key Research and Development Program of China (Grant No.2022YFB3605404)the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos.62204125,62305171,62204126,and 62304113)+3 种基金the Joints Fund of the National Natural Science Foundation of China (Grant No.U23A20349)the Natural Science Foundation of Jiangsu Province (Grant No.BK20230361)the Natural Science Research Startup Foundation of Recuring Talents of Nanjing University of Posts and Telecommunications (Grant No.XK1060921119)the Jiangsu Provincial Team of Innovation and Entrepreneurship (Grant No.JSSCTD202351).
文摘In this work,a PEDOT:PSS/Sn:α-Ga_(2)O_(3) hybrid heterojunction diode(HJD)photodetector was fabricated by spin-coat-ing highly conductive PEDOT:PSS aqueous solution on the mist chemical vapor deposition(Mist-CVD)grown Sn:α-Ga_(2)O_(3) film.This approach provides a facile and low-cost p-PEDOT:PSS/n-Sn:α-Ga_(2)O_(3) spin-coating method that facilitates self-powering per-formance through p-n junction formation.A typical type-Ⅰheterojunction is formed at the interface of Sn:α-Ga_(2)O_(3) film and PEDOT:PSS,and contributes to a significant photovoltaic effect with an open-circuit voltage(Voc)of 0.4 V under the 254 nm ultra-violet(UV)light.When operating in self-powered mode,the HJD exhibits excellent photo-response performance including an outstanding photo-current of 10.9 nA,a rapid rise/decay time of 0.38/0.28 s,and a large on/off ratio of 91.2.Additionally,the HJD also possesses excellent photo-detection performance with a high responsivity of 5.61 mA/W and a good detectivity of 1.15×1011 Jones at 0 V bias under 254 nm UV light illumination.Overall,this work may explore the potential range of self-pow-ered and high-performance UV photodetectors.
