香港城市大学朱宗龍团队报道了氧化锡原子层沉积实现钙钛矿太阳能电池长期稳定性。相关研究成果发表在2024年10月11日出版的《科学》。

钙钛矿太阳能电池（PSCs）需要稳健的接触方案来提高稳定性并简化生产过程。

研究人员在保护钙钛矿的同时共沉积了钙钛矿和空穴选择性接触，从而能够在不使用富勒烯的情况下沉积SnOx/Ag。通过原子层沉积制备的SnOx用作耐用的无机电子传输层。调整SnOx层中的氧空位缺陷导致功率转换效率（PCEs）>25%。

该器件表现出优于传统p-i-n PSCs的稳定性，成功通过了多项基准稳定性测试。在65°C模拟AM1.5照明下，以最大功率点连续运行2000小时后，它们保留了>95%的PCE。此外，它们还拥有超过1000小时的T97认证寿命。

附：英文原文

Title: Long-term stability in perovskite solar cells through atomic layer deposition of tin oxide

Author: Danpeng Gao, Bo Li, Qi Liu, Chunlei Zhang, Zexin Yu, Shuai Li, Jianqiu Gong, Liangchen Qian, Francesco Vanin, Kelly Schutt, Melissa A. Davis, Axel F. Palmstrom, Steven P. Harvey, Nicholas J. Long, Joseph M. Luther, Xiao Cheng Zeng, Zonglong Zhu

Issue&Volume: 2024-10-11

Abstract: Robust contact schemes that boost stability and simplify the production process are needed for perovskite solar cells (PSCs). We codeposited perovskite and hole-selective contact while protecting the perovskite to enable deposition of SnOx/Ag without the use of a fullerene. The SnOx, prepared through atomic layer deposition, serves as a durable inorganic electron transport layer. Tailoring the oxygen vacancy defects in the SnOx layer led to power conversion efficiencies (PCEs) of >25%. Our devices exhibit superior stability over conventional p-i-n PSCs, successfully meeting several benchmark stability tests. They retained >95% PCE after 2000 hours of continuous operation at their maximum power point under simulated AM1.5 illumination at 65°C. Additionally, they boast a certified T97 lifetime exceeding 1000 hours.

DOI: adq8385

Source: https://www.science.org/doi/10.1126/science.adq8385