Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP24)
DOI: https://doi.org/10.29363/nanoge.iperop.2024.032
Publication date: 18th October 2023
In recent years, organic-inorganic halide perovskite solar cells (PSCs) have experienced high-speed developments with the highest power conversion efficiency (PCE) of 26.1%, therefore, the perovskite solar cells (PSCs) have attracted much attention due to their high-energy conversion efficiency and low production cost. However, the problems of stability, toxicity, and scale-up for PSCs are still unresolved. The electron selective layer (ESL) is an indispensable component of perovskite solar cells (PSCs) and is responsible for the collection of photogenerated electrons. Preparing ESL at a low temperature is a key issue for flexible PSCs. While the commonly used electron selective layer (ESL), TiO2, always needs high-temperature post-treatment in its fabrication process, which highly hinder the low-temperature, large-scale and low-cost commercial production of PSCs. Therefore, developing low temperature processable ESLs with high performances can significantly promote the industrialization of PSCs. In this paper, very current results in low temperature processed ESLs, especially non-TiO2 inorganic and organic materials, such as SnO2, SnS2, WOx etc., are described. Their fabrication methods, properties, and applications in PSCs are highlighted. Developing low-temperature processable ESLs will provide more possibilities for designing novel structural PSCs and promoting the commercialization of PSCs. I will also introdue several new Pb-free perovskite materials developed by our group.
This work was supported by the Grant-in-Aid for Scientific Research (KAKENHI) program, Japan (B, Grant Number 19H02818).
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