We report that the integration of filter membrane and Ca_(2)Nb_(3)O_(10)nanosheets(FM@CNO) UV photodetector(UV PD) shows high performance and excellent flexibility. The Ca_(2)Nb_(3)O_(10)nanosheets were prepared by a ...We report that the integration of filter membrane and Ca_(2)Nb_(3)O_(10)nanosheets(FM@CNO) UV photodetector(UV PD) shows high performance and excellent flexibility. The Ca_(2)Nb_(3)O_(10)nanosheets were prepared by a facile solid-state reaction and liquid exfoliation process. The Ca_(2)Nb_(3)O_(10)nanosheets can be integrated into the pores of a filter membrane via a simple vacuum filtration method. The FM@CNO UV PD shows high performance under 300 nm light illumination at 5 V bias, including high responsivity(0.08 AW^(-1)), high detectivity(1.1 × 10^(12)Jones), high UV/visible rejection ratio(3.86 × 10^(3)) and fast speed(0.12/1.24 ms). Furthermore, the FM@CNO device exhibits excellent flexibility after many bending cycles.In addition, the FM@CNO array device was used as a pixel array detector for UV imaging. This work provides a novel approach to achieve high performance flexible PDs based on filter membrane and two dimensional materials.展开更多
Ultraviolet(UV)light,invisible to the human eye,possesses both benefits and risks.To harness its potential,UV photodetectors(PDs)have been engineered.These devices can convert UV photons into detectable signals,such a...Ultraviolet(UV)light,invisible to the human eye,possesses both benefits and risks.To harness its potential,UV photodetectors(PDs)have been engineered.These devices can convert UV photons into detectable signals,such as electrical impulses or visible light,enabling their application in diverse fields like environmental monitoring,healthcare,and aerospace.Wide bandgap semiconductors,with their high-efficiency UV light absorption and stable opto-electronic properties,stand out as ideal materials for UV PDs.This review comprehensively summarizes recent advancements in both traditional and emerging wide bandgap-based UV PDs,highlighting their roles in UV imaging,communication,and alarming.Moreover,it examines methods employed to enhance UV PD performance,delving into the advantages,challenges,and future research prospects in this area.By doing so,this review aims to spark innovation and guide the future development and application of UV PDs.展开更多
基金financially supported by the National Key R&D Program of China(No.2017YFA0204600)the Inner Mongolia Talent Fund+1 种基金the National Natural Science Foundation of China(Nos.51872050 and 12061131009)the Science and Technology Commission of Shanghai Municipality(Nos.21520712600 and19520744300)。
文摘We report that the integration of filter membrane and Ca_(2)Nb_(3)O_(10)nanosheets(FM@CNO) UV photodetector(UV PD) shows high performance and excellent flexibility. The Ca_(2)Nb_(3)O_(10)nanosheets were prepared by a facile solid-state reaction and liquid exfoliation process. The Ca_(2)Nb_(3)O_(10)nanosheets can be integrated into the pores of a filter membrane via a simple vacuum filtration method. The FM@CNO UV PD shows high performance under 300 nm light illumination at 5 V bias, including high responsivity(0.08 AW^(-1)), high detectivity(1.1 × 10^(12)Jones), high UV/visible rejection ratio(3.86 × 10^(3)) and fast speed(0.12/1.24 ms). Furthermore, the FM@CNO device exhibits excellent flexibility after many bending cycles.In addition, the FM@CNO array device was used as a pixel array detector for UV imaging. This work provides a novel approach to achieve high performance flexible PDs based on filter membrane and two dimensional materials.
基金supported by the Natural Science Research Start-up Foundation of Recruiting Talents and the Project of State Key Laboratory of Organic Electronics and Information Displays of Nanjing University of Posts and Telecommunication(nos.NY223177,NY221005,NY223179,and GZR2024010026)National Natural Science Foundation of China(62374091)the Special Professor Fund of Jiangsu Province(RK030STP21007).
文摘Ultraviolet(UV)light,invisible to the human eye,possesses both benefits and risks.To harness its potential,UV photodetectors(PDs)have been engineered.These devices can convert UV photons into detectable signals,such as electrical impulses or visible light,enabling their application in diverse fields like environmental monitoring,healthcare,and aerospace.Wide bandgap semiconductors,with their high-efficiency UV light absorption and stable opto-electronic properties,stand out as ideal materials for UV PDs.This review comprehensively summarizes recent advancements in both traditional and emerging wide bandgap-based UV PDs,highlighting their roles in UV imaging,communication,and alarming.Moreover,it examines methods employed to enhance UV PD performance,delving into the advantages,challenges,and future research prospects in this area.By doing so,this review aims to spark innovation and guide the future development and application of UV PDs.
