标题：Fabrication of Nickel Oxide Nanopillar Arrays on Flexible Electrodes for Highly Efficient Perovskite Solar Cells
作者：Shan Cong1 , Guifu Zou1,*, Yanhui Lou1 , Hao Yang1 , Ying Su1 , Jie Zhao1,2,*, Cheng Zhang3 , Peipei Ma1 , Zheng Lu1 , Hongyou Fan4,5,6,*, and Zhifeng Huang2,7,*
单位：1 College of Energy, Soochow Institute for Energy and Materials InnovationS, and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215000, China;
2 Department of Physics, Institute of Advanced Materials, State Key Laboratory of Environmental and Biological Analysis, Hong Kong Baptist University (HKBU), Kowloon Tong, Kowloon, Hong Kong SAR, China;
3 School of Optoelectronic Science and Engineering, Soochow University, Suzhou, 215000, China; 4 Center for Integrated Nanotechnologies, Sandia National Laboratories, Albuquerque, NM 87185, United States;
5 Chemical and Biological Engineering, Center for Micro-Engineered Materials, University of New Mexico, Albuquerque, NM 87122, United States;
6 Advanced Materials Laboratories, Sandia National Laboratories, Albuquerque, NM 87185, United States
7 HKBU Institute of Research and Continuing Education, Industrialization Complex Building, Shenzhen Virtual Univ. Park, No. 2 Yuexing 3rd Road, Shenzhen, Guangdong 518000, China
摘要：Semiconductor nanomaterials with controlled morphologies and architectures are of critical importance for high-performance optoelectronic devices. However, the fabrication of such nanomaterials on polymer-based flexible electrodes is particularly challenging due to degradation of the flexible electrodes at a high temperature. Here we report the fabrication of nickel oxide nanopillar arrays (NiOx NaPAs) on a flexible electrode by vapor deposition, which enables highly efficient perovskite solar cells (PSCs). The NiOx NaPAs exhibit an enhanced light transmittance for light harvesting, prohibit exciton recombination, promote irradiation-generated hole transport and collection, and facilitate the formation of large perovskite grains. These advantageous features result in a high efficiency of 20% and 17% for the rigid and flexible PSCs, respectively. Additionally, the NaPAs show no cracking after 500 times of bending, consistent with the mechanic simulation results. This robust fabrication opens a new opportunity for the fabrication of a large area of high-performance flexible optoelectronic devices.
影响因子：12.080
原文链接：https://pubs.acs.org/doi/abs/10.1021/acs.nanolett.9b00760