n-Type polymer layers enable efficient, scalable, and thermally stable perovskite solar modules. - Gao, Danpeng; Gong, Jie; Yang, Lei; Wang, Ning; Chang, Bohong; Qian, Liangchen; Vanin, Francesco; Zhang, Chunlei; Yu, Zexin; Li, Shuai; Gong, Jianqiu; Zhu, Zonglong (Science, 2026)