DataVXACS Materials LettersPaper
journal article·2025-02-03

Isomerizing Passivators in Perovskite Solar Cells: The Impact of Molecular Spatial Configuration

Fazheng Qiu, Jiayi Sun, Haoliang Cheng, Peng Mao, Jun Lv, Shen Xing, Po-Chuan Yang, Yufei Zhong

ACS Materials Letters· Volume 7· Issue 2
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Source abstract

Abstract

Defect passivation, relying on the interaction between passivators and the perovskite lattice, effectively improves the photoelectric performance of perovskite solar cells. Nevertheless, the principles for designing passivators, such as tuning molecular configuration and electrostatic potential, can sometimes be invalid even with those widely reported functional atoms and groups, showing an uncovered missing factor in current passivating mechanisms. Herein, by carefully comparing the isomerism of passivators, we unearth that the spatial position of functional atoms on the passivators plays a key role in determining their passivating capabilities. We find that the passivation becomes stronger when the spacing of functional atoms matches that of lead ions in between the neighboring lattice. Interestingly, by utilizing such a strategy, we achieve strong passivation from a passivator even with weak electrostatic potential. Eventually, we stepwise increase the device performance from a baseline of 22.74% to 23.30%/23.88%/24.60% with improved device stability, showcasing the advantage of optimizing molecular spatial configuration for passivators.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Zhejiang engineering research center for fabrication and application of advanced photovoltaic materials, School of Materials Science and Engineering, NingboTech University, No. 1 Qianhu South Road, Ningbo, 315100, P. R. China

Department of Marine Engine and Electric Management

China Coast Guard Academy

Zhejiang engineering research center for fabrication and application of advanced photovoltaic materials, Institute for Carbon Neutrality

Ningbo Innovation Centre, Zhejiang University

Nanjing University

Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute of Applied Physics, TU Dresden, Nöthnitzer Str. 61, 01187 Dresden, Germany

RISEN Energy Co., Ltd, Meilin Street, Ninghai, Ningbo, 315609, P. R. China

Funding

Natural Science Foundation of Ningbo · Ningbo Municipal Bureau of Science and Technology · Natural Science Foundation of Zhejiang Province · Department of Education of Zhejiang Province

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