Triboelectric-polarization-enhanced high sensitive ZnO UV sensor

被引：43

作者：

Li, Hu ^{[1
,2
]}

Zhao, Luming ^{[1
]}

Meng, Jianping ^{[1
]}

Pan, Caofeng ^{[1
]}

Zhang, Yan ^{[4
]}

Zhang, Yaming ^{[4
]}

Liu, Zhuo ^{[1
,2
]}

Zou, Yang ^{[1
]}

Fan, Yubo ^{[2
]}

Wang, Zhong Lin ^{[1
,3
,5
]}

Li, Zhou ^{[1
,3
,5
]}

机构：

[1] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing Key Lab Micronano Energy & Sensor, CAS Ctr Excellence Nanosci, Beijing 100083, Peoples R China

[2] Beihang Univ, Beijing Adv Innovat Ctr Biomed Engn, Sch Biol Sci & Med Engn, Key Lab Biomech & Mech,Minist Educ, Beijing 100083, Peoples R China

[3] Univ Chinese Acad Sci, Sch Nanosci & Technol, Beijing 100049, Peoples R China

[4] Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China

[5] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

NANO TODAY | 2020年 / 33卷

基金：

中国国家自然科学基金; 北京市自然科学基金;

关键词：

Triboelectric voltage; Schottky barrier height; UV detection; Triboelectric nanogenerator; FULLY TRANSPARENT; HIGH-PERFORMANCE; ULTRAVIOLET; PHOTODETECTOR; NANOWIRES; NETWORKS;

D O I：

10.1016/j.nantod.2020.100873

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Ultraviolet (UV) detection is of important significance in protecting environment, human health and related scenarios. Schottky barrier height (SBH) plays a key role in determining the performance of UV sensors. Herein, triboelectric voltage was proposed to lower the SBH of zinc oxide nano/micro wire and silver paste (ZnO//Ag) UV sensor. SBH was flexibly lowered by different times of triboelectric voltage treatment. Greatly improved UV response was achieved based on Schottky-to-Schottky contact after lowering its SBH, its photoresponse rates were enhanced by 645 % at raising edge from 6.77 s to 1.05 s, and 716 % at falling edge from 2.72 s to 0.38 s. The on/off ratio was greatly increased from 590 to 10400. Based on these results, the triboelectric technology may provide new views for tuning performance of Schottky-junction-based sensors. The developed tunable ZnO//Ag sensor combined with triboelectric voltage opens up possibility for future high sensitive UV sensing systems. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：8

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