Self-Powered Ultraviolet Photodetectors Driven by Built-In Electric Field

Longxing Su; Wei Yang; Jian Cai; Hongyu Chen; Xiaosheng Fang

doi:10.1002/smll.201701687

Self-Powered Ultraviolet Photodetectors Driven by Built-In Electric Field

Small. 2017 Dec;13(45). doi: 10.1002/smll.201701687. Epub 2017 Sep 19.

Authors

Longxing Su¹, Wei Yang¹, Jian Cai¹, Hongyu Chen², Xiaosheng Fang¹

Affiliations

¹ Department of Materials Science, Fudan University, Shanghai, 200433, P. R. China.
² Department of Physics, Harbin Institute of Technology, Harbin, 150001, P. R. China.

PMID: 28926681
DOI: 10.1002/smll.201701687

Abstract

Self-powered ultraviolet (UV) photodetectors, which have vast applications in the military and for civilian purposes, have become particularly attractive in recent years due to their advantages of high sensitivity, ultrasmall size, and low power consumption. In particular, self-powered UV photodetectors driven by a built-in electric field cannot only detect UV signals but also be powered by the incident signals instead of external power. In this concept, the key issues and most recent developments on photovoltaic type UV photodetectors driven by p-n homojunction, heterojunction, and Schottky junction are surveyed. This should generate extensive interest in this field and encourage more researchers to engage in and tackle the scientific challenges.

Keywords: Schottky junction; heterojunction; p-n homojunction; self-powered.

Publication types

Review
Research Support, Non-U.S. Gov't