Colloidal chemically fabricated ZnO : Cu-based photodetector with extended UV-visible detection waveband
Liang Hu1, Liping Zhu, Haiping He
1State Key Laboratory of Silicon Materials, Dept. of Materials, Zhejiang University, Hangzhou, 310027, People's Republic of China. zlp1@zju.edu.cn hphe@zju.edu.cn.
Nanoscale
|September 24, 2013
Abstract:
Polycrystalline ZnO : Cu-based film photodetectors with extended detection waveband (UV and visible light) were fabricated using facile colloidal chemistry and a post-annealing process. The obtained detectors are highly sensitive to visible light and can realize the response switch between UV and visible light. A native and extrinsic trap cooperatively controlled space charge limited (SCL) transport mechanism is proposed to understand this complex photoconduction behaviour.
