Jiangjian Shi

May 29, 2024 | nature.com | Jiangjian Shi |Fanqi Meng |Yanhong Luo |Dongmei Li

AbstractKesterite Cu2ZnSn(S, Se)4 (CZTSSe) solar cells are highly promising low-cost thin-film photovoltaics. However, the efficiency of these solar cells is challenged by severe charge losses and complex defects. Here we reveal through a data-driven correlation analysis that the dominant deep defect in CZTSSe exhibits a donor character.

May 21, 2024 | nature.com | Jiangjian Shi |Fanqi Meng |Yanhong Luo |Dongmei Li |Shiyou Chen

AbstractCharge loss at grain boundaries of kesterite Cu2ZnSn(S, Se)4 polycrystalline absorbers is an important cause limiting the performance of this emerging thin-film solar cell. Herein, we report a Pd element assisted reaction strategy to suppress atomic vacancy defects in GB regions.

Oct 20, 2023 | nature.com | Dongmei Li |Jiangjian Shi |Yanhong Luo

AbstractKesterite Cu2ZnSn(S, Se)4 is considered one of the most competitive photovoltaic materials due to its earth-abundant and nontoxic constituent elements, environmental friendliness, and high stability. However, the preparation of high-quality Kesterite absorbers for photovoltaics is still challenging for the uncontrollability and complexity of selenization reactions between metal element precursors and selenium.