Abstract
Inverted polymer solar cells (PSCs) based on poly-3-hexylthiophene (P3HT):[6,6]-phenyl C71 butyric acid methyl ester (PCBM) active layer were fabricated. Thin films of zinc oxide (ZnO) and molybdenum trioxide (MoO3) were used as cathode and anode buffer layers, respectively. Optical properties of ZnO thin films were studied by measuring the transmission spectrum. Thickness of MoO3 layer was optimized to achieve the best device performance. Device with 7 nm thick MoO3 layer exhibited a maximum power conversion efficiency of 2.07%.
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