The CuI/NiO gradient hole transport layer for enhanced carrier efficiency in large-area perovskite solar cell
Abstract
The Cs0.05FA0.95PbI3-based solar cell (10 × 10 cm2) with a CuI/NiO bilayer gradient hole transport layer (HTL) is prepared via an approach of sputtering–in situ iodization–annealing method. The large-area CsFA-based solar cell with CuI/NiO HTLs exhibits a high power conversion efficiency (PCE) of ∼19.76% (active area: 96.5 cm2), showing good stability of ∼90.84% after ∼1000 h of aging. The CuI/NiO bilayer gradient HTL is regarded as the core issue, because, besides barrier amelioration and potential gradient construction, it exhibits high hole induction via charge compensation, while achieving effective hole extraction and electron retardation by Fermi level regulation, thereby improving carrier dynamics transportation for increasing PCE, including rapid carrier transfer, showing lower photodegradation for good long-term stability.
Article Details
Journal Info
Applied Physics Letters
American Institute of Physics
Authors (10)
Wei Yang
Yafeng Liu
Zichenlu Wang
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University 1
Wenzhen An
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University 1
Shifeng Deng
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University 1
Lei Shi
School of Health Management Guangzhou Medical University Guangzhou China
Chaorong Li
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University 1 , 310018 Hangzhou,
You Song
Zhejiang Key Laboratory of Quantum State Control and Optical Field Manipulation, Department of Physics, Zhejiang Sci-Tech University 1
Hong Lin
Jiaqi Pan