Date: April 19th, 2023
The paper, titled "Operando Characterizations of Light-Induced Junction Evolution in Perovskite Solar Cells," was recently published in ACS Applied Materials & Interfaces journal. Prof. Yaxin Zhai is listed as the co-first author.
The study focuses on the changes that occur in the microscopic optoelectronic properties of perovskite heterojunctions during the operation of metal-halide perovskite solar cells. The team used Kelvin probe force microscopy and transient reflection spectroscopy techniques to spatially resolve the evolution of junction properties during device operation and study the light-soaking effect.
The results of the study revealed a rise in electric field at the hole-transport layer side, convoluted with a more reduced interfacial recombination rate at the electron-transport layer side in the PSCs with an n−i−p structure. The junction evolution was attributed to the effects of ion migration and self-poling by built-in voltage. The team correlated device performances with changes in electrostatic potential distribution and interfacial carrier dynamics.
This study provides a new route for understanding the complex operation mechanism in perovskite solar cells. The research team's findings have important implications for the development of more efficient and sustainable solar energy technologies.
Read the full article at Advanced Functional Materials
ACS Appl. Mater. Interfaces 2023,
Chuanxiao Xiao*+, Yaxin Zhai+, Zhaoning Song+, Kang Wang, Changlei Wang, Chun-Sheng Jiang, Matthew C. Beard, Yanfa Yan, and Mowafak Al-Jassim
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