Efficient additive-free FAPbI3 perovskite solar cells achieved by promoting homogeneity - Feng, Fanxiu; Guan, Yan; Liu, Fangzhou; Wu, Cuncun; Su, Huhu; Biao Wang; Zhang, Xian; Liang, Yuchao; Cai, Shaogeng; Zhang, Yangyang; Xiao, Lixin; Zheng, Shijian (JOURNAL OF MATERIALS CHEMISTRY C, 2024)