Mixed Dimensional Perovskites Heterostructure for Highly Efficient and Stable Perovskite Solar Cells. Issue 4 (28th December 2021)

• Record Type: Journal Article
• Authors: Ge, Chuangye; Lu, Jian-Fang; Singh, Mriganka; Ng, Annie; Yu, Wei; Lin, Haoran; Satapathi, Soumitra; Hu, Hanlin
• Is Part Of: Solar RRL. Volume 6:Issue 4(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-12-28
• Subjects: aqueous synthesis -- perovskite solar cells -- stability -- trimethylsulfonium lead triiodide 1D/3D heterostructures; Solar energy -- Periodicals; Photovoltaic power generation -- Periodicals; Solar energy -- Research -- Periodicals; Photovoltaic power generation -- Research -- Periodicals; Periodicals; 333.7923
• DOI: 10.1002/solr.202100879
• Languages: English
• ISSNs: 2367-198X

Abstract

Abstract : Heterojunctions constructed upon multidimensional perovskites (1D/3D or 2D/3D) has emerged as an effective approach to improve the photovoltaic performance and stability of perovskite solar cells (PSCs). Herein, 1D trimethyl sulfonium lead triiodide (Me3 SPbI3 ) 1D Me3 SPbI3 nanoarrays are successfully synthesized via a two‐step method in aqueous condition, which reflects excellent water resistivity and environmental stability. By incorporating this 1D Me3 SPbI3 into lead halide 3D perovskites, heterostructural 1D/3D perovskite photoactive layer with improved morphology, crystallinity, enhanced photoluminescence lifetime, and reduced carrier recombination in comparison to its 3D counterpart is obtained. Moreover, an efficient and stable 1D/3D PSCs with power conversion efficiency (PCE) of 22.06% by using this 1D/3D perovskite are demonstrated. It noticeably maintained 97% of their initial efficiency after 1000 h storage under ambient condition (RH≈50%) without encapsulation. Our study opens up the design protocol for the development of next‐generation highly efficient and stable perovskite solar cells. Abstract : Herein, one dimensional (1D) trimethylsulfonium lead triiodide (Me3 SPbI3 ) nanoarrays are synthesized in aqueous condition with excellent water resistivity and environmental stability. Moreover, an efficient and stable 1D/3D device with power conversion efficiency (PCE) of 22.06% is demonstrated, which also maintains 97% of its initial value after 1000 h storage under ambient condition (RH ≈50%) without encapsulation.