The well-developed multifunctional wearable electronic device has fed the demand for human medicine and health monitoring in complex situations.However,the advancement of nuclear technology,especially irradiation medi...The well-developed multifunctional wearable electronic device has fed the demand for human medicine and health monitoring in complex situations.However,the advancement of nuclear technology,especially irradiation medicine and safety inspections,has increased the exposure risk of irradiation safety workers.Traditional irradiation detectors are stiff and incompatible with the skin,and lack human health monitoring function,thus it’s vital to apply these flexible sensors for irradiation warning.Here,we report a novel composite gel device synthesized through solution processes by combining the Cs_(3)Cu_(2)I_(5):Zn nanoscintillator with the pre-patterned biocompatible gel,exhibiting a bi-functional response to motion/vibration sensing and sensitive irradiation warning.These wearable devices achieve a pressure sensitivity of up to 34 kPa^(-1)in a low-pressure range (0–3 kPa),a low limit of detection (LoD) down to 1.4 Pa,enabling health monitoring functions of pulse monitoring,finger bending,and elbow bending.Simultaneously,the device scintillates under X-ray irradiation among a wide dose rate range of 54–1167μGy_(air)s^(-1).The robust device shows no obvious signal loss after 4000 compression cycles and also excellent irradiation resistance over 50 days,broadening the path for designing and realizing new functional wearable devices.展开更多
Quasi-2D perovskites have been demonstrated to be competitive materials in the photodetection fields due to the enhanced moisture stability by large organic cations.However,as the increasing demands of modern technolo...Quasi-2D perovskites have been demonstrated to be competitive materials in the photodetection fields due to the enhanced moisture stability by large organic cations.However,as the increasing demands of modern technology,it is still challenging to combine the flexibility with the capability of weak light detection in a low-cost way.Here,amides,carboxylic acids,and anhydrides groups-rich carbonized polymer dots(CPDs)were employed to fll in the perovskite grain boundaries,which can passivate the point defects of perovskite by coordinating with the unbonded Pb atoms,and reduce the leakage current.Weak light detection capability was demonstrated by directly resolving light with an intensity of 10.1 pW cm^(-2).More importantly,the stretchable polymer chains on CPDs strongly interact with perovskite ions through multiple supramolecular interactions,and extend the stretchable properties to the perovskite/CPDs composites,which can maintain the integral structure stability during the deformation of perovskite crystals and restricted any crack by releasing the flm strain.Our fabricated devices show extraordinary flexible stability in the bending-dependent response tests.The viscoelasticity of CPDs improves the bending stability of the flexible quasi-2D perovskite photodetectors,and device performance shows no degradation after bending 10000 times,comparable or even outperforming the dominating flexible photodetectors.展开更多
基金financially supported by the National Natural Science Foundation of China (No. 52173166 and 22105083)the Project of Science and Technology Development Plan of Jilin Province (No. 20230101025JC)+1 种基金Xiaomi Young Scholar Projectthe Fundamental Research Funds for the Central Universities, JLU, and JLUSTIRT (2017TD-06)。
文摘The well-developed multifunctional wearable electronic device has fed the demand for human medicine and health monitoring in complex situations.However,the advancement of nuclear technology,especially irradiation medicine and safety inspections,has increased the exposure risk of irradiation safety workers.Traditional irradiation detectors are stiff and incompatible with the skin,and lack human health monitoring function,thus it’s vital to apply these flexible sensors for irradiation warning.Here,we report a novel composite gel device synthesized through solution processes by combining the Cs_(3)Cu_(2)I_(5):Zn nanoscintillator with the pre-patterned biocompatible gel,exhibiting a bi-functional response to motion/vibration sensing and sensitive irradiation warning.These wearable devices achieve a pressure sensitivity of up to 34 kPa^(-1)in a low-pressure range (0–3 kPa),a low limit of detection (LoD) down to 1.4 Pa,enabling health monitoring functions of pulse monitoring,finger bending,and elbow bending.Simultaneously,the device scintillates under X-ray irradiation among a wide dose rate range of 54–1167μGy_(air)s^(-1).The robust device shows no obvious signal loss after 4000 compression cycles and also excellent irradiation resistance over 50 days,broadening the path for designing and realizing new functional wearable devices.
基金the National Natural Science Foundation of China(Nos.22105083 and 52173166)the Fundamental Research Funds for the Central Universities,JLU and JLUSTIRT(2017TD-06).
文摘Quasi-2D perovskites have been demonstrated to be competitive materials in the photodetection fields due to the enhanced moisture stability by large organic cations.However,as the increasing demands of modern technology,it is still challenging to combine the flexibility with the capability of weak light detection in a low-cost way.Here,amides,carboxylic acids,and anhydrides groups-rich carbonized polymer dots(CPDs)were employed to fll in the perovskite grain boundaries,which can passivate the point defects of perovskite by coordinating with the unbonded Pb atoms,and reduce the leakage current.Weak light detection capability was demonstrated by directly resolving light with an intensity of 10.1 pW cm^(-2).More importantly,the stretchable polymer chains on CPDs strongly interact with perovskite ions through multiple supramolecular interactions,and extend the stretchable properties to the perovskite/CPDs composites,which can maintain the integral structure stability during the deformation of perovskite crystals and restricted any crack by releasing the flm strain.Our fabricated devices show extraordinary flexible stability in the bending-dependent response tests.The viscoelasticity of CPDs improves the bending stability of the flexible quasi-2D perovskite photodetectors,and device performance shows no degradation after bending 10000 times,comparable or even outperforming the dominating flexible photodetectors.
