文献类型：期刊文献

英文题名：Near-infrared-II photodetection realized by introducing organic-inorganic charge-transfer-complex photosensitive material into pentacene phototransistor

作者：Wang, Haonan[1];Liu, Shiyan[1];Li, Yan[1];Yue, Xiaofeng[1];Shen, Yifan[1];Xu, Haiyang[1];Xu, Haitao[1];Tan, Yongsheng[1];Zeng, Liya[1];Yao, Bo[1];Fang, Zebo[1]

机构：[1]Shaoxing Univ, Dept Elect Engn, Shaoxing 312000, Peoples R China

年份：2020

卷号：77

外文期刊名：ORGANIC ELECTRONICS

收录：SCI-EXPANDED(收录号：WOS:000517965600039)、、EI(收录号：20194507632934)、Scopus(收录号：2-s2.0-85074387607)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant Nos. 61504082 and 51872186), the Natural Science Foundation of Zhejiang Province, China (Grant No. LQ19F040002) and the Science and Technology Planning Project of Shaoxing city (Grant No. 2017B70063).

语种：英文

外文关键词：Charge transfer - Film preparation - Infrared detectors - Light sensitive materials - Metals - organic-inorganic materials - Photodetectors - Photons - Photorefractive materials - Photosensitivity - Phototransistors - Tungsten compounds

外文摘要：Organic phototransistor (OPT) is a promising photodetector with substantial attention due to its advantages such as low cost, light weight, flexibility and ease of large area preparation. Although the second near-infrared (NIR-II) window (1.0-1.7 mu m) has important applications in fiber communication, the organic infrared photosensitive materials are scarce in this waveband, which greatly limits the application of organic photodetectors in near-infrared bands. In this work, a chargetransfer-complex (CTC) film with significant hyperchromic effect in the infrared range of 1000-1400 nm was prepared by co-evaporation of metal oxide WO3 and organic molecule m-MTDATA. A high performance near-infrared OPT was fabricated by combining this CTC photosensitive layer and pentacene (PENT) high-mobility channel layer, the photoresponsivity R of which has surpassed the recent reported level of 1.1 mu m band inorganic infrared detector. The physical mechanism underlying the operation of CTC-PENT-OPT was clarified and the thickness of the CTC photosensitive film in this device was optimized. This new type of organic-inorganic CTC infrared-sensitive material will offer a new choice for the future study on organic infrared detectors.