光电探测器
材料科学
紫外线
光电子学
带隙
苯
灵敏度(控制系统)
热液循环
波长
化学
化学工程
电子工程
工程类
有机化学
作者
Bing Guo,Gang Wu,Hongzheng Chen,Mang Wang
标识
DOI:10.1016/j.orgel.2015.11.018
摘要
Wide bandgap NaTaO3 nanocrystals (NaTaO3 NCs) were synthesized by a two-step hydrothermal method. The hybrid film based on the pyridine modified NaTaO3 NCs and 1, 3, 5-tri(m-pyrid-3-yl-phenyl) benzene (TmPyPB) was prepared by solution processing at room temperature. Photodetector based on the hybrid film presented selective sensitivity to UV signals with wavelength shorter than 317 nm because the bandgap wider than 4.0 eV. Under 5 mW/cm2 280 nm illumination through the semi-transparent Al cathode, a high ultraviolet signal-to-noise ratio of 3 orders of magnitude with response time about 200–300 ms can be achieved for the device in the case of −3 V bias.
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