Affiliation:
1. State Key Laboratory of Electroanalytical Chemistry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 China
2. Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China
Abstract
AbstractOrganic semiconductor molecule is a highly promising material system for next‐generation photodetectors due to its tunable absorption, inherent flexibility, and solution and low‐temperature processibility. However, developing organic semiconductor materials for visible‐blind ultraviolet (UV) photodetectors with broad spectral response remains a big challenge. Herein, a novel triphenylamine‐functionalized donor–acceptor–donor (D–A–D) type isoindigo derivative, (E)‐6,6'‐bis(4‐(diphenylamino)phenyl)‐[3,3'‐biindolinylidene]‐2,2′‐dione (BDPBD), is successfully synthesized. The ultrasensitive visible‐blind UV single crystal organic phototransistors (SC‐OPTs) based on the BDPBD micro/nanometer‐sized single crystal using simple solution process for the detection of ultraviolet‐A (UV‐A), ultraviolet‐B (UV‐B), and ultraviolet‐C (UV‐C) UV light showed a highest hole mobility of 0.12 cm2 V−1 s−1, millisecond‐level response time (20 ms), and ultrahigh photoresponsivity, detectivity, and external quantum efficiency up to 2.62 × 106 A W−1, 1.47 × 1017 Jones, and 3.51 × 108%, respectively.
Funder
National Natural Science Foundation of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Cited by
2 articles.
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