近日，昆明理工大学材料科学与工程学院陈江照教授团队在Nature子刊Nature Communications上以题为“Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells”发表最新研究成果，该研究工作得到国家自然科学基金面上、兵团重点领域科技攻关计划等项目的资助。

界面陷阱态辅助的非辐射复合阻碍了钙钛矿太阳能电池的发展。鉴于此，陈江照教授团队报道了理性设计的通用缺陷钝化剂，实现了高效稳定单结和叠层钙钛矿太阳能电池。通过阴阳离子协同效应同时钝化了多种缺陷。而且，可以通过精确控制阳离子上氢原子数量和空间位阻来调控缺陷钝化效果。由于最小化的界面能量损失，基于L-缬氨酸苄酯对甲苯磺酸盐（VBETS）修饰的真空闪蒸技术制备反式电池和组件分别取得了26.28%和21%的效率，VBETS钝化的钙钛矿/硅叠层电池获得了30.98%的功率转换效率。该工作强调了钝化分子中氢原子数量和空间位阻的重要性。

Fig. 1| Theoretical screening of organic cations. a The chemical structures and electrostatic potential of BG+, VBE+, LBE+, and TS-. b The binding energy of BGTS, VBETS, and LBETS with FAPbI3 containing PbI anti-site, VI, and VFA defects. c-e, The binding energy of (c) BG+, (d) VBE+, and (e) LBE+ cations with FAPbI3 containing VFA defects. f Binding energy of An+, MA+, EA+, BG+, VBE+, and LBE+ with FAPbI3 containing VFA defects. g-i Charge density difference of (g) BG+, (h) VBE+, and (i) LBE+ with FAPbI3 surface encompassing VFA defects (cyan indicates a decrease in charge density, yellow indicates an increase in charge density).

论文链接：

Zuolin Zhang#, Yinsu Feng#, Jike Ding#, Quanxing Ma#, Hong Zhang*, Jiajia Zhang*, Mengjia Li, Taoran Geng, Wenhuan Gao, Yang Wang*, Boxue Zhang, Thierry Pauporté, Jian-Xin Tang*, Hongjian Chen, Jiangzhao Chen*, Cong Chen*. Rationally designed universal passivator for high-performance single-junction and tandem perovskite solar cells. Nature Communications 2025, 16, 753.

https://www.nature.com/articles/s41467-025-56068-6