ZnO nanowires based degradable high-performance photodetectors for eco-friendly green electronics

作     者：Bhavani Prasad Yalagala Abhishek Singh Dahiya Ravinder Dahiya Bhavani Prasad Yalagala;Abhishek Singh Dahiya;Ravinder Dahiya

作者机构：Bendable Electronics and Sensing Technologies(BEST)GroupUniversity of GlasgowGlasgow G128QQU.K. 

出 版 物：《Opto-Electronic Advances》 (光电进展（英文）)

年 卷 期：2023年第6卷第2期

页      面：11-25页

核心收录：

学科分类：081702[工学-化学工艺] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：supported in part by Engineering and Physical Science Research Council (EPSRC) through Engineering Fellowship (EP/R029644/1) Hetero-print Programme Grant (EP/R03480X/1) European Commission through grant references (H2020-MSCAITN2019-861166) 

主　　题：transient electronics degradable devices ZnO nanowire chitosan UV photodetector printed electronics 

摘      要：Disposable devices designed for single and/or multiple reliable measurements over a short duration have attracted considerable interest recently. However, these devices often use non-recyclable and non-biodegradable materials and wasteful fabrication methods. Herein, we present ZnO nanowires(NWs) based degradable high-performance UV photodetectors(PDs) on flexible chitosan substrate. Systematic investigations reveal the presented device exhibits excellent photo response, including high responsivity(55 A/W), superior specific detectivity(4×10^(14) jones), and the highest gain(8.5×10~(10)) among the reported state of the art biodegradable PDs. Further, the presented PDs display excellent mechanical flexibility under wide range of bending conditions and thermal stability in the measured temperature range(5–50 ℃).The biodegradability studies performed on the device, in both deionized(DI) water(pH≈6) and PBS solution(pH=7.4),show fast degradability in DI water(20 mins) as compared to PBS(48 h). These results show the potential the presented approach holds for green and cost-effective fabrication of wearable, and disposable sensing systems with reduced adverse environmental impact.