journal article·2024-06Open access

Defect Passivation Refinement in Perovskite Photovoltaics: Achieving Efficiency over 45% under Low‐Light and Low‐Temperature Dual Extreme Conditions

Yajie Wang, Tinghuan Yang, Weilun Cai, Peng Mao, Yang Yang, Nan Wu, Chou Liu, Shiqiang Wang, Yachao Du, Wenliang Huang, Guangtao Zhao, Zicheng Ding, Ningyi Yuan, Jianning Ding, Yufei Zhong, Shengzhong (Frank) Liu, Kui Zhao

Advanced Materials· Volume 36· Issue 23

Abstract

Abstract Perovskite photovoltaics have emerged as the most promising candidates for next‐generation light‐to‐electricity technology. However, their practical application still suffers from energy loss induced by intrinsic defects within the perovskite lattice. Here, a refined defect passivation in perovskite films is designed, which shows a multi‐interaction mechanism between the perovskite and passivator. Interestingly, a shift of molecular bonding is observed upon cooling down the film, leading to a stronger passivation of iodine/formamidine vacancies. Such mechanism on device under low‐light and low‐temperature conditions is further leveraged and a record efficiency over 45% with durable ambient stability (T90 > 4000 h) is obtained. The pioneer application of perovskite solar cells in above dual extreme conditions in this work reveals the key principles of designing functional groups for the passivators, and also demonstrates the capability of perovskites for diverse terrestrial energy conversion applications in demanding environments such as polar regions and outer space.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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

Affiliations

Key Laboratory of Applied Surface and Colloid Chemistry National Ministry of Education Shaanxi Key Laboratory for Advanced Energy Devices Shaanxi Engineering Lab for Advanced Energy Technology School of Materials Science and Engineering Shaanxi Normal University Xi'an 710119 China

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 China

School of Materials Science and Engineering Jiangsu Collaborative Innovation Center for Photovoltaic Science and Engineering Jiangsu Province Cultivation Base for State Key Laboratory of Photovoltaic Science and Technology Changzhou University Changzhou 213164 China

Micro/Nano Science and Technology Center Jiangsu University Zhenjiang 212013 China

Dalian National Laboratory for Clean Energy iChEM Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian Dalian 116023 China

Funding

National Natural Science Foundation of China · Higher Education Discipline Innovation Project · Natural Science Foundation of Ningbo Municipality · Natural Science Foundation of Zhejiang Province

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