Growth of Amorphous Passivation Layer Using Phenethylammonium Iodide for High‐Performance Inverted Perovskite Solar Cells. Issue 2 (23rd July 2019)

• Record Type: Journal Article
• Authors: Zhang, Fan; Huang, Qinxun; Song, Jun; Zhang, Yaohong; Ding, Chao; Liu, Feng; Liu, Dong; Li, Xiaobin; Yasuda, Hironobu; Yoshida, Koji; Qu, Junle; Hayase, Shuzi; Toyoda, Taro; Minemoto, Takashi; Shen, Qing
• Is Part Of: Solar RRL. Volume 4:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-07-23
• Subjects: amorphous -- open-circuit voltage -- perovskite solar cells -- phenethylammonium iodide -- surface passivation; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.201900243
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : Organic–inorganic lead halide perovskite solar cells have realized a rapid increase of power conversion efficiency (PCE) in the past few years. However, their performance still suffers trap‐assisted decline due to defects at the surface and grain boundaries of the perovskite film. Herein, a phenethylammonium iodide‐lead iodide (PEAI‐PbI2 ) passivation layer is formed on the CH3 NH3 PbI3 perovskite film. The characterization results indicate that the PEAI covering layer leads to the reduction of surface defects and suppression of nonradiative recombination. By manipulating this surface passivation method, a remarkably improved V OC of 1.16 V and an enhanced PCE of 20.8% are achieved. Abstract : An amorphous passivation layer using phenethylammonium iodide for amply covering the surface and grain boundaries of the CH3 NH3 PbI3 film, results in the reduction of trap density and suppression of nonradiative recombination.