Corrigendum: Impact of Polymer Backbone Fluorination on the Charge Generation/Recombination Patterns and Vertical Phase Segregation in Bulk Heterojunction Organic Solar Cells - Shao, Yanqiu; Chang, Yuying; Zhang, Suju; Bi, Mingyue; Liu, Shengjian; Zhang, Daliang; Lu, Shirong; Kan, Zhipeng (Frontiers in Chemistry, 2020)