A flexible ultraviolet photoconductor based on ZnO and 8-hydroxyquinoline (8HQ) is fabricated. In such a device, the 8HQ film covers the ZnO layer and protects the ZnO from being affected by oxygen via slow adsorption and desorption processes, which would greatly deteriorate the response speed of the device. As a result, the photoconductor exhibits a shorter rise time (10 s) and decay time (27 s) than that of the bare ZnO film based device, in which the times are 133 s and 200 s, respectively. Meanwhile, the device displays a high responsivity of 484 A W−1 under a moderate electric field of 2 × 106 V m−1.
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Jin et al. (2013) studied this question.
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