Passivation of surface states in the ZnO nanowire with thermally evaporated copper phthalocyanine for hybrid photodetectors
Passivation of surface states in the ZnO nanowire with thermally evaporated copper phthalocyanine for hybrid photodetectors
复制标题
使用热蒸发铜酞菁钝化 ZnO 纳米线的表面态，用于混合光电探测器。
DOI：
10.1039/c3nr01088k
复制
发表时间：
2013-01-01
期刊：
影响因子：
6.7
通讯作者：
Chen, Liwei
中科院分区：
文献类型：
--
作者：
Chen, Qi;Ding, Huaiyi;Chen, Liwei
O2/H2O分子在ZnO纳米线（NW）表面的吸附导致光生载流子的长寿命，从而通过抑制暗电流和提高光电流增益而有益于ZnO NW基紫外光电探测器，但缓慢的吸附过程也导致缓慢的探测器响应时间。在这里，我们表明，热蒸发酞菁铜薄膜是有效的钝化ZnO纳米线的表面陷阱态。结果，有机/无机混合光电探测器器件同时表现出改善的光敏性和响应时间。这表明有机/无机杂化结构是一种有效的界面钝化方法。
The adsorption of O2/H2O molecules on the ZnO nanowire (NW) surface results in the long lifetime of photo-generated carriers and thus benefits ZnO NW-based ultraviolet photodetectors by suppressing the dark current and improving the photocurrent gain, but the slow adsorption process also leads to slow detector response time. Here we show that a thermally evaporated copper phthalocyanine film is effective in passivating surface trap states of ZnO NWs. As a result, the organic/inorganic hybrid photodetector devices exhibit simultaneously improved photosensitivity and response time. This work suggests that it could be an effective way in interfacial passivation using organic/inorganic hybrid structures.