Moth eye‐inspired highly efficient, robust, and neutral‐colored semitransparent perovskite solar cells for building‐integrated photovoltaics
Yiyi Zhu,
Lei Shu,
Qianpeng Zhang,
Yudong Zhu,
Swapnadeep Poddar,
Chen Wang,
Zhubing He,
Zhiyong Fan
Affiliations
Yiyi Zhu
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Lei Shu
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Qianpeng Zhang
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Yudong Zhu
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Swapnadeep Poddar
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Chen Wang
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Zhubing He
Department of Materials Science and Engineering, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG) Southern University of Science and Technology Shenzhen China
Zhiyong Fan
Department of Electronic & Computer Engineering The Hong Kong University of Science and Technology, Clear Water Bay Kowloon Hong Kong China
Abstract Semi‐transparent perovskite solar cells (ST‐PSCs) engendered enormous attention for practical applications such as power generation windows. However, it is still challenging to achieve high‐performance, robust and neutral‐colored ST‐PSCs. Herein we demonstrate a moth‐eye‐inspired structure (MEIS) for light‐trapping photons in the wavelength range where the human eye is less perceptive. This biomimetic structure contributes to the improvements in ST‐PSCs performance and visual appearance simultaneously. Consequently, a record high figure‐of‐merit for ST‐PSC, defined as the product of power conversion efficiency and the average visible transmittance, is achieved. Meanwhile, the optical appearance is converted to a desired near‐neutral color after introducing the MEIS. The investigation of ST‐PSCs with long‐term stability is implemented via engineering blend ratio of halides. The modified device exhibited appealing tolerance against moisture and solar irradiation. This work reveals an in‐depth understanding of light trapping along with modifying the visual appearance of solar cells.
