Achieving 18.29% efficiency of layer-by-layer all polymer solar cells enabled by iridium complex as energy donor and crystallizing agent

Yuheng Ni, Jiayu Li, Miao Zhang, Hongyue Tian, Hang Zhou, Lu Zhang, Wenjing Xu, Guorui Fu, Xingqiang Lü, Sang Young Jeong, Wai‐Yeung Wong, Han Young Woo, Xiaoling Ma, Xiaoling Ma, Xiaoling Ma