@article{672cc9c4e519498ba190e97de58b783a,
title = "Fabrication of Nickel Oxide Nanopillar Arrays on Flexible Electrodes for Highly Efficient Perovskite Solar Cells",
abstract = "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.",
keywords = "nickel oxide, nanopillar arrays, hole transporting layer, flexible perovskite solar cells, glancing angle deposition",
author = "Shan Cong and Guifu Zou and Yanhui Lou and Hao Yang and Ying Su and Jie Zhao and Cheng Zhang and Peipei Ma and Zheng Lu and Hongyou Fan and Zhifeng Huang",
note = "Funding Information: We gratefully acknowledge the support from the National Natural Science Foundation of China (21671141, 21504061, and 21473149), “973 ProgramThe National Basic Research Program of China” Special Funds for the Chief Young Scientist (2015CB358600), the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions for Optical Engineering in Soochow University, Jiangsu collaborative innovation center for photovoltaic science and engineering in Changzhou University, RC-ICRS/15-16/02 (HKBU), Hong Kong Scholars Program (HKSP 2017-065), and HKBU8/CRF/11E. This paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in this work do not necessarily represent the views of the U.S. Department of Energy or the United States Government. We are thankful for the support from the Center for Integrated Nanotechnologies (CINT), an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Los Alamos National Laboratory (contract no. DE-AC52-06NA25396) and Sandia National Laboratories (contract no. DE-NA-0003525). Sandia National Laboratories is a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC., a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy{\textquoteright}s National Nuclear Security Administration under contract no. DE-NA0003525.",
year = "2019",
month = jun,
day = "12",
doi = "10.1021/acs.nanolett.9b00760",
language = "English",
volume = "19",
pages = "3676--3683",
journal = "Nano Letters",
issn = "1530-6984",
publisher = "American Chemical Society",
number = "6",
}
