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 ‡
       

(a) MeSq nanowires obtained from the solvent exchange self-assembly method. Inset: photography of the precipitation of MeSq nanowires in a glass vial. (b) SEM images of MeSq microwires. (c) Cross-polarized optical microscopy image of the MeSq microwire arrays. (d) Schematic illustration of the patterning strategy for growing MeSq microwire arrays. (e) Absorption spectra of the MeSq nanowires and the MeSq solution with photocurrent spectral response behavior of a single nanowire device. (a), (e) Reproduced with permission.[31] Copyright 2008, Wiley-VCH. (f) Temporal response of the MeSq microwire arrays under 200 mW·cm−2 808 nm light. (c), (d), (f) Reproduced with permission.[33] Copyright 2016, American Chemical Society. (g) I–V characteristics of a flexible MeSq microwire photoconductor with different curvatures in dark and under 808 nm light irradiation. Inset: photograph of the device on a flexible PDMS substrate. (b), (g) Reproduced with permission.[32] Copyright 2015, American Scientific Publishers.