Crown ether-induced supramolecular passivation and two-dimensional crystal interlayer formation in perovskite photovoltaics

Peng Gao; Yujin Ji; Jingnan Song; Guanqing Zhou; Junqi Lai; Xuemiao Yin; Youyong Li; Tao Song; Zhe Zhao; Qi Chen; Wei Feng; Liwei Chen; Yongming Zhang; Shihe Yang; Baoquan Sun; Feng Liu

Cell Reports Physical Science (Jun 2021)

Crown ether-induced supramolecular passivation and two-dimensional crystal interlayer formation in perovskite photovoltaics

Peng Gao,
Yujin Ji,
Jingnan Song,
Guanqing Zhou,
Junqi Lai,
Xuemiao Yin,
Youyong Li,
Tao Song,
Zhe Zhao,
Qi Chen,
Wei Feng,
Liwei Chen,
Yongming Zhang,
Shihe Yang,
Baoquan Sun,
Feng Liu

Affiliations

Peng Gao: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China; Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
Yujin Ji: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
Jingnan Song: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Guanqing Zhou: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Junqi Lai: i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Xuemiao Yin: School for Radiological and Interdisciplinary Sciences (RAD-X) and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, Soochow University, Suzhou 215123, China
Youyong Li: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
Tao Song: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China
Zhe Zhao: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Qi Chen: i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Wei Feng: State Key Laboratory of Fluorinated Functional Membrane Materials, Zibo, Shandong 256401, China
Liwei Chen: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; i-Lab, CAS Center for Excellence in Nanoscience, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
Yongming Zhang: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Shihe Yang: Guangdong Provincial Key Lab of Nano-Micro Materials Research, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
Baoquan Sun: Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou 215123, China; Corresponding author
Feng Liu: Frontiers Science Center for Transformative Molecules and In-situ Center for Physical Science, School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding author

Journal volume & issue: Vol. 2, no. 6
p. 100450

Abstract

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Summary: It is challenging to realize high efficiency and stability in perovskite photovoltaics simultaneously. Here, we show supramolecular chemistry using macrocyclic crown ether to prepare high-performance metal-halide perovskite films. Multiple cooperative supramolecular interactions between perovskites and crown ether are built, and superior defect passivation is achieved. A thin crystalline capping layer on top of perovskites is constructed to synergistically passivate the perovskite surface defects and protect the underlying films from environmental damage. The capping layer is confirmed to be a unique two-dimensional (2D) crystal with a highly ordered, high-crystallinity lamellae structure and face-sharing lead-halide octahedral organization, providing surface protection on the perovskite matrix. Lead-halide perovskite solar cells (PSCs) with supramolecular passivation and a 2D crystal interlayer demonstrated remarkable photovoltaic efficiency and stability improvements, offering a 21.5% efficiency and improved environmental stabilities under moisture, ultraviolet (UV) irradiation, and thermal stress. Our work provides a strategy to achieve efficient and stable lead-halide perovskite-based devices by crown ether-induced supramolecular passivation and 2D crystal interlayer protection.

Published in Cell Reports Physical Science

ISSN: 2666-3864 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Science: Physics
Website: https://www.cell.com/cell-reports-physical-science

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