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Hybrid Perovskite Quantum Dot/Non‐Fullerene Molecule Solar Cells with Efficiency Over 15%
Author(s) -
Yuan Jiabei,
Zhang Xuliang,
Sun Jianguo,
Patterson Robert,
Yao Huifeng,
Xue Di,
Wang Yao,
Ji Kang,
Hu Long,
Huang Shujuan,
Chu Dewei,
Wu Tom,
Hou Jianhui,
Yuan Jianyu
Publication year - 2021
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.202101272
Subject(s) - materials science , quantum dot , hybrid solar cell , fullerene , perovskite (structure) , hybrid material , nanotechnology , photovoltaics , energy conversion efficiency , molecule , optoelectronics , passivation , active layer , layer (electronics) , photovoltaic system , polymer solar cell , chemical engineering , ecology , chemistry , organic chemistry , engineering , biology , thin film transistor
Organic‐inorganic hybrid film using conjugated materials and quantum dots (QDs) are of great interest for solution‐processed optoelectronic devices, including photovoltaics (PVs). However, it is still challenging to fabricate conductive hybrid films to maximize their PV performance. Herein, for the first time, superior PV performance of hybrid solar cells consisting of CsPbI 3 perovskite QDs and Y6 series non‐fullerene molecules is demonstrated and further highlights their importance on hybrid device design. In specific, a hybrid active layer is developed using CsPbI 3 QDs and non‐fullerene molecules, enabling a type‐II energy alignment for efficient charge transfer and extraction. Additionally, the non‐fullerene molecules can well passivate the QDs, reducing surface defects and energetic disorder. The champion CsPbI 3 QD/Y6‐F hybrid device has a record‐high efficiency of 15.05% for QD/organic hybrid PV devices, paving a new way to construct solution‐processable hybrid film for efficient optoelectronic devices.