The effect of CuOx thin film oxidation state on the enhancement of hole transportation in the inverted polymer solar cell

• Main Authors: Nau-Hung Tsao, 曹乃弘
• Other Authors: 蘇昭瑾
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/n8w6yz

碩士 === 國立臺北科技大學 === 有機高分子研究所 === 101 === Copper (Cu) in its multi oxidation state are potential materials to improve the performance of organic solar cells by acting as interfacial transport layers. Cu is also an ideal material in optoelectronic application due to its earth abundance and low cost. In this study, CuOx thin film was used to replace PEDOT:PSS as the hole transporting layer at an anode interfacial layer for inverted polymer solar cell. We have demonstrated thermal-evaporated CuO and Cu2O thin film as the interfacial layer at the organic/metal interface to improve the performance of the inverted P3HT:PC61BM based solar cell. For standard PEDOT:PSS based device, the photo-to-current conversion efficiency (?) is 3.12%, which corresponds to Voc = 0.61 V, Jsc = 10.27 mA/cm2 and FF = 0.49. On the other hand, Cu2O based device shows the best efficiency ? = 2.56% (Voc = 0.50 V, Jsc = 9.53 mA/cm2, and FF = 0.53). For CuO based device, the best efficiency of ? = 3.91% (Voc= 0.63 V, Jsc = 10.89 mA/cm2, and FF = 0.57), which shows 25% enhancement compared with the standard device.