A hybrid photodiode with planar heterojunction structure consisting of ZnO nanoparticles and CuPc thin film

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• 作者：Zhaolin Yuan^a ; ^b ; Junsheng Yu^a ; ^{jsyu@uestc.edu.cn} ; Nana Wang^a ; Yadong Jiang^a
• 关键词：Photodiode ; Planar heterojunction structure ; ZnO nanoparticles ; Illumination ; Rectification ratio
• 刊名：Current Applied Physics
• 出版年：2012
• 期刊代码：15_15671739
• 类别：ph
• 出版时间：September, 2012
• 卷：12
• 期：5
• 页码：1278-1282
• 文件大小：719 K

摘要

A photodiode with planar heterojunction was fabricated using copper (II) phthalocyanine (CuPc) organic semiconductor and zinc oxide (ZnO) inorganic nanoparticles (NPs, 鈭?聽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聽V was achieved for the device under 100聽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.