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Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

Mingyu JeongDepartment of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun, Ulsan 44919, Republic of KoreaIn Woo ChoiSchool of Electronics Engineering, Kyungpook National University, Daegu 41566, Republic of KoreaEun Min GoDepartment of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaYongjoon ChoDepartment of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun, Ulsan 44919, Republic of KoreaMinjin KimUlsan Advanced Energy Technology R&D Center, Korea Institute of Energy Research, Nam-gu, Ulsan 44776, Republic of KoreaByongkyu LeeDepartment of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun, Ulsan 44919, Republic of KoreaSeonghun JeongDepartment of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun, Ulsan 44919, Republic of KoreaYimhyun JoUlsan Advanced Energy Technology R&D Center, Korea Institute of Energy Research, Nam-gu, Ulsan 44776, Republic of KoreaHyewon ChoiUlsan Advanced Energy Technology R&D Center, Korea Institute of Energy Research, Nam-gu, Ulsan 44776, Republic of KoreaJiyun LeeDepartment of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaJin‐Hyuk BaeSchool of Electronics Engineering, Kyungpook National University, Daegu 41566, Republic of KoreaSang Kyu KwakDepartment of Energy Engineering, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaDong Suk KimUlsan Advanced Energy Technology R&D Center, Korea Institute of Energy Research, Nam-gu, Ulsan 44776, Republic of KoreaChangduk YangDepartment of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulju-gun, Ulsan 44919, Republic of Korea

2020en

ABI

Annotatsiya

Further improvement and stabilization of perovskite solar cell (PSC) performance are essential to achieve the commercial viability of next-generation photovoltaics. Considering the benefits of fluorination to conjugated materials for energy levels, hydrophobicity, and noncovalent interactions, two fluorinated isomeric analogs of the well-known hole-transporting material (HTM) Spiro-OMeTAD are developed and used as HTMs in PSCs. The structure-property relationship induced by constitutional isomerism is investigated through experimental, atomistic, and theoretical analyses, and the fabricated PSCs feature high efficiency up to 24.82% (certified at 24.64% with 0.3-volt voltage loss), along with long-term stability in wet conditions without encapsulation (87% efficiency retention after 500 hours). We also achieve an efficiency of 22.31% in the large-area cell.

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Identifikatorlar

DOI: 10.1126/science.abb7167

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