Ichikawa Takafumi, Shiratori Seimei
Center for Science and Technology for Designing Functions, School of Integrated Design Engineering, Graduate School of Science and Technology, Keio University, 223-8522, Japan.
J Nanosci Nanotechnol. 2012 May;12(5):3725-31. doi: 10.1166/jnn.2012.6186.
Organic-inorganic hybrid solar cells based on poly(3-hexylthiophene) (P3HT) and (6,6)-phenyl C61 butyric acid methyl ester (PCBM) hybridized with ZnO nanorods were fabricated by growing vertical ZnO nanorods on indium tin oxide (ITO) substrates and filling with bulk heterojunction polymers (P3HT:PCBM). The interface between the organic and inorganic nanostructures influences the performance of the organic-inorganic hybrid solar cells. In this paper, the influence of the state of the P3HT:PCBM/ZnO interface on the performance of organic-inorganic hybrid solar cells is examined. The solar cell performance was high when the P3HT:PCBM/ZnO junction area was large. The charge separation is effective when the active layer/electron transport layer junction area is large, resulting in increasing photocurrent and a high conversion efficiency. The bulk-heterojunction polymer concentration was kept low to infiltrate into the ZnO nanorods, resulting in a large active layer/electron transport layer junction area.
通过在氧化铟锡（ITO）衬底上生长垂直的氧化锌纳米棒并填充体异质结聚合物（聚（3 - 己基噻吩）（P3HT）和（6,6）-苯基-C61丁酸甲酯（PCBM）），制备了基于P3HT和PCBM并与氧化锌纳米棒杂化的有机-无机杂化太阳能电池。有机和无机纳米结构之间的界面会影响有机-无机杂化太阳能电池的性能。本文研究了P3HT:PCBM/ZnO界面状态对有机-无机杂化太阳能电池性能的影响。当P3HT:PCBM/ZnO结面积较大时，太阳能电池性能较高。当活性层/电子传输层结面积较大时，电荷分离有效，从而导致光电流增加和转换效率提高。为了渗透到氧化锌纳米棒中，体异质结聚合物浓度保持较低，从而形成较大的活性层/电子传输层结面积。
