文献类型：期刊文献

英文题名：Investigation of the source-drain electrodes/the active layer contact-effect on the performance of organic phototransistor

作者：Yao, Bo[1];Li, Yan[2];Fang, Zebo[1];Tan, Yongsheng[1];Liu, Shiyan[1];Peng, Yingquan[3];Xu, Haitao[1]

机构：[1]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Coll Chem & Chem Engn, Shaoxing 312000, Peoples R China;[3]China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310000, Zhejiang, Peoples R China

年份：2017

卷号：233

起止页码：58

外文期刊名：SYNTHETIC METALS

收录：SCI-EXPANDED(收录号：WOS:000414880100008)、、EI(收录号：20174104243439)、Scopus(收录号：2-s2.0-85030483782)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 61504082, 51272159 and 61405118), the Natural Science Foundation of Zhejiang province, China (Grant Nos. LQ16F040001 and LY15A040001) and the Science and Technology Planning Project of Shaoxing city (Grant No. 2015B70009).

语种：英文

外文关键词：Organic phototransistor; Photosensitivity; Photoresponsivity; Schottky contact

外文摘要：In order to clarify the influence of the source/drain (S/D) electrodes/the active layer contact condition on the photoelectric properties of the organic phototransistor (OPT), pentacene (Pn) and copper phthalocyanine (CuPc) based OPTs with Au or Al as S/D electrodes were fabricated. The output and transfer characteristics of OPTs were investigated in the dark and under illumination. The results indicate that high-mobility Pn-OPTs are more suitable for the use of Au electrode with low contact barrier to obtain higher photoresponsivity. And low mobility CuPc-OPTs are more suitable for the use of Al electrode with Shottky contact for maintaining the same level of photoresponsivity while achieving a high maximum photosensitivity (P-MAX). Compared with Au-CuPc-OPT, the improved P-MAX effects of Shottky contact on Al-CuPc-OPT can be ascribed to the photon induced barrier lowering (PIBL) effect after illumination. The physical mechanism of PIBL in OPT was deduced in this paper.