Efficient perovskite solar cells based on novel three-dimensional TiO2 network architectures  

作　　者：Hao Lu Kaimo Deng Nina Yan Yulong Ma Bangkai Gu Yong Wang Liang Li 

机构地区：[1]College of Physics, Optoelectronics and Energy, Center for Energy Conversion Materials and Physics (CECMP), Jiangsu Key Laboratory of Thin Films, Soochow University, Suzhou 215006, China [2]State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

出　　处：《Science Bulletin》2016年第10期778-786,共9页科学通报（英文版）

摘　　要：Mesoscopic lead halide perovskite solar cells typically use TiO2 nanoparticle films as the scaffolds for electron-transport pathway and perovskite deposition. Here, we demonstrate that swelling-induced mesoporous block copolymers can be templates for producing three- dimensional TiO2 networks by combining the atomic layer deposition technique. Thickness adjustable TiO2 network is an excellent alternative scaffold material for efficient per- ovskite solar cells. Our best performing cells using such a 270 nm thick template have achieved a high efficiency of 12.5 % with pristine poly-3-hexylthiophene as a hole transport material. The high performance is attributed to the direct transport pathway and high absorption of scaf- folds, small leakage current and largely reduced recombi- nation rate at interfaces. The results show that TiO2 network architecture is a promising scaffold for meso- scopic perovskite solar cells.典型地，使用 TiO ₂ nanoparticle 为电子运输小径和 perovskite 免职作为脚手架拍摄的 Mesoscopic 铅卤化物 perovskite 太阳能电池。这里，我们证明胀大导致 mesoporous 块共聚物能是为由联合原子层免职技术生产三维的 TiO ₂ 网络的模板。厚度可调节的 TiO ₂ 网络是为有效 perovskite 太阳能电池的优秀其他的支架材料。我们用这的最好表现的房间一 270 ? 厚模板完成了的 nm 12.5 的高效率 ? 有是的太古的 poly-3-hexylthiophene 的 % 洞运输材料。高效在接口被归因于直接运输小径和脚手架，小漏水流和大部分减少的再结合率的高吸收。结果证明 TiO ₂ 网络建筑学是为 mesoscopic perovskite 太阳能电池的有希望的脚手架。

关 键 词：PEROVSKITE Solar cell TIO2 TEMPLATE Atomic layer deposition 

分 类 号：TN919.26[电子电信—通信与信息系统] TB383[电子电信—信息与通信工程]