Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5788972 | Science Bulletin | 2016 | 9 Pages |
Abstract
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 perovskite solar cells. Our best performing cells using such a 270Â 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 scaffolds, small leakage current and largely reduced recombination rate at interfaces. The results show that TiO2 network architecture is a promising scaffold for mesoscopic perovskite solar cells.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Hao Lu, Kaimo Deng, Nina Yan, Yulong Ma, Bangkai Gu, Yong Wang, Liang Li,