Статья

A mixed-cation lead mixed-halide perovskite absorber for tandem solar cells

David P. McMeekinClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKGolnaz SadoughiClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKWaqaas RehmanClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKGiles E. EperonClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKMichael SalibaClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKMaximilian T. HörantnerClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKAmir A. HaghighiradClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKNobuya SakaiClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKLars KorteHelmholtz-Zentrum Berlin für Materialien und Energie, Institute for Silicon Photovoltaics, Kekuléstrasse 5, 12489 Berlin, GermanyB. RechHelmholtz-Zentrum Berlin für Materialien und Energie, Institute for Silicon Photovoltaics, Kekuléstrasse 5, 12489 Berlin, GermanyMichael B. JohnstonClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKLaura M. HerzClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UKHenry J. SnaithClarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, UK

2016en

ABI

Аннотация

Metal halide perovskite photovoltaic cells could potentially boost the efficiency of commercial silicon photovoltaic modules from ∼20 toward 30% when used in tandem architectures. An optimum perovskite cell optical band gap of ~1.75 electron volts (eV) can be achieved by varying halide composition, but to date, such materials have had poor photostability and thermal stability. Here we present a highly crystalline and compositionally photostable material, [HC(NH2)2](0.83)Cs(0.17)Pb(I(0.6)Br(0.4))3, with an optical band gap of ~1.74 eV, and we fabricated perovskite cells that reached open-circuit voltages of 1.2 volts and power conversion efficiency of over 17% on small areas and 14.7% on 0.715 cm(2) cells. By combining these perovskite cells with a 19%-efficient silicon cell, we demonstrated the feasibility of achieving >25%-efficient four-terminal tandem cells.

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Идентификаторы

DOI: 10.1126/science.aad5845

Цитирования и источники

Цитирований: 6Использованных источников: 0

Показатели — AkademScholar