Di Wang, Saisai Li, Zijin Ding, Jian Xu, Xingyu Chen, Qiao Zheng, Thamraa Alshahrani, Siyu Liu, Tingwei He, Xinxin Yue, Saif M. H. Qaid, Keyu Wei, Xuewen Fu, Lin Feng, Ou Yang, Huanxin Ju, Yuanzhi Jiang, Jun Chen, Mingjian Yuan. "Continuously graded-doped SnO2 for efficient n–i–p perovskite solar cells." Nature (2026). https://doi.org/10.1038/s41586-026-10587-4