title: Enhanced near-infrared photoresponse of organic phototransistors based on single-component donor-acceptor conjugated polymer nanowires.
abstract: Single-component near-infrared phototransistors based on ambipolar organic semiconductor nanowires have been investigated and compared with their corresponding thin-film counterparts. The nanowire organic phototransistors (NW-OPTs) showed photocurrent/dark-current ratios and photoresponsivities as high as 1.3 × 10(4) and 440 mA W(-1) for the p-type channel, and 3.3 × 10(4) and 70 mA W(-1) for the n-type channel, respectively, upon near-infrared illumination with an intensity of 47.1 mW cm(-2). These were much higher values compared to their thin-film counterparts. The enhancement of the near-infrared photoresponse could be attributed to the larger trap density originating from the semiconductor/insulator interface and the semiconductor/air interface. The performance of NW-OPTs was demonstrated to open up new possibilities to improve the near-infrared photoresponse of single-component devices.
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn and Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
authors.forename: Min
authors.initials: M
authors.lastname: Zhu
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn.
authors.forename: Shenchen
authors.initials: S
authors.lastname: Lv
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn and Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
authors.forename: Qinghe
authors.initials: Q
authors.lastname: Wang
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn and Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
authors.forename: Guobing
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn and Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
authors.forename: Hongbo
authors.initials: H
authors.lastname: Lu
authors.affiliation: Key Lab of Special Display Technology, Ministry of Education, National Engineering Lab of Special Display Technology, State Key Lab of Advanced Display Technology, Academy of Opto-Electronic Technology, Hefei University of Technology, Hefei, 230009, People's Republic of China. gbzhang@hfut.edu.cn lzhqiu@hfut.edu.cn and Key Laboratory of Advanced Functional Materials and Devices, Anhui Province, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China and School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
authors.forename: Longzhen
authors.initials: L
authors.lastname: Qiu