A hybrid photodiode with planar heterojunction structure consisting of ZnO nanoparticles and CuPc thin film |
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| Authors: | Zhaolin Yuan Junsheng Yu Nana Wang Yadong Jiang |
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| Institution: | 1. School of Optoelectronic Information, State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, PR China;2. School of Physic and Electronic Information Engineering, Shannxi University of Technology, Hanzhong 723000, PR China |
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| Abstract: | A photodiode with planar heterojunction was fabricated using copper (II) phthalocyanine (CuPc) organic semiconductor and zinc oxide (ZnO) inorganic nanoparticles (NPs, ～5 nm). The current–voltage (I–V) characteristics of ITO/ZnO NPs/CuPc/Ag device in dark and under illumination with a solar simulator were investigated in detail. The measurement results showed that the device exhibited good rectifying behavior in dark and under illumination. A rectification ratio (RR) of 15.44 at 1.95 V was achieved for the device under 100 mW/cm2 illumination power. Also, the RR of the device as a function of light intensity was observed. The photoresponsive mechanism of the photodiode was illuminated in term of its energy band diagram. |
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