Photodetectors based on small-molecule organic semiconductor crystals*

Project supported by the National Natural Science Foundation of China (Grant Nos. 51672180, 51622306, and 21673151), Collaborative Innovation Center of Suzhou Nano Science & Technology, the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD), the 111 Project, Joint International Research Laboratory of Carbon-Based Functional Materials and Devices.
Pan Jing, Deng Wei, Xu Xiuzhen, Jiang Tianhao, Zhang Xiujuan †, Jie Jiansheng ‡
       

Scanning electron microscopy (SEM) images of self-assembled 2-anthracen-9-ylmethylene malononitrile (a) nanowires and (b) microwires. (c) Absorption spectra of 2-anthracen-9-ylmethylene malononitrile in solution, nanowire, and microwire phase. (d) Temporal response of the anthracen-based photoconductor under 5 mW·cm−2 white light with a bias voltage of 50 V. (a)–(d) Reproduced with permission.[14] Copyright 2008, American Chemical Society. (e) SEM image of a single benzothiophene sub-micron ribbon. (f) Absorption spectrum of benzothiophene sub-micron ribbons. (e), (f) Reproduced with permission.[15] Copyright 2008, Wiley-VCH. (g) Schematic diagram of a single benzothiophene sub-micron ribbon photoconductor. (h) Dependence of the responsivity on the light intensity, the devices are with different dielectric materials. (g), (h) Reproduced with permission.[16] Copyright 2013, Elsevier.