Solution-Processed Self-Powered Transparent Ultraviolet Photodetectors with Ultrafast Response Speed for High-Performance Communication System

Fang, Huajing1; Zheng, Cheng2,3; Wu, Liangliang2,3; Li, Yi2,3; Cai, Jian4; Hu, Mingxiang4; Fang, Xiaosheng4; Ma, Rong2,3; Wang, Qing5; Wang, Hong2,3,6,7

2019-05-16

10.1002/adfm.201809013

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

Transparent ultraviolet (UV) photodetectors are an essential component of next-generation see-through electronics. However, the current photodetectors often suffer from relatively slow response speeds and high driving voltages. Here, all-solution-processed UV photodetectors are reported that are facilely prepared from environmentally friendly and abundant materials. The UV photodetectors are composed of a titanium dioxide thin film as the photosensitive layer sandwiched between two different transparent electrodes to form asymmetric Schottky junctions. The photodetector with high optical transparency can operate at zero bias because of spontaneous separation of photogenerated electron-hole pairs by the built-in electric field. The resulting self-powered photodetector displays high sensitivity to broadband UV light (200-400 nm). In particular, an ultrafast response speed up to 44 ns is obtained, representing a significant improvement over those of the conventional transparent photodetectors. Moreover, the photodetector has been successfully applied, for the first time, in a UV communication system as the self-powered signal receiver. This work uniquely combines the features of high optical transparency and self-power ability into UV photodetectors and would enable a broad range of optoelectronic applications.

Schottky junctions self-powered transparent electronics ultrafast UV photodetectors

SCI ; EI

英语

NI期刊

通讯

Shenzhen DRC project[[2018]1433]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000471335500011

WILEY-V C H VERLAG GMBH

20190706507363

Electric fields ; Photodetectors ; Signal receivers ; Titanium dioxide ; Transparency ; Transparent electrodes

Electricity: Basic Concepts and Phenomena:701.1 ; Light/Optics:741.1 ; Inorganic Compounds:804.2 ; Atomic and Molecular Physics:931.3

MATERIALS SCIENCE

Web of Science

1.Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
2.Xi An Jiao Tong Univ, Sch Elect & Informat Engn, Xian 710049, Shaanxi, Peoples R China
3.Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
4.Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
5.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA
6.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
7.Southern Univ Sci & Technol, Shenzhen Engn Res Ctr Novel Elect Informat Mat &, Shenzhen 518055, Peoples R China

Fang, Huajing,Zheng, Cheng,Wu, Liangliang,et al. Solution-Processed Self-Powered Transparent Ultraviolet Photodetectors with Ultrafast Response Speed for High-Performance Communication System[J]. ADVANCED FUNCTIONAL MATERIALS,2019,29(20).

Fang, Huajing.,Zheng, Cheng.,Wu, Liangliang.,Li, Yi.,Cai, Jian.,...&Wang, Hong.(2019).Solution-Processed Self-Powered Transparent Ultraviolet Photodetectors with Ultrafast Response Speed for High-Performance Communication System.ADVANCED FUNCTIONAL MATERIALS,29(20).

Fang, Huajing,et al."Solution-Processed Self-Powered Transparent Ultraviolet Photodetectors with Ultrafast Response Speed for High-Performance Communication System".ADVANCED FUNCTIONAL MATERIALS 29.20(2019).