Mitigating intrinsic defects and optimizing interfacial energetics via aluminum-doping toward 13.6% efficiency kesterite solar cells - Xinyu Zhang; Jingyi Meng; Zhenyan He; Chun Guo; Linxin Gao; Yanping Song; Wenjie Zhu; Sisi Jia; Busen Zhai; Lunkan Shen; Dipeng Xu; Huanhuan Sun; et al. (Chemical Engineering Journal, 2026)