Journal Article charge transport organic solar cells perovskite solar cells Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Review acetamidinium chlorination defect passivation dimethyl itaconate exciton generation fused ring intermolecular exchanging grain growth ion migration light-emitting diodes morphology near-infrared absorption nonfullerene nonfullerene acceptors operational stability organic light-emitting diode organic photovoltaics organic semiconductors organic solar cell perovskites polymerization semitransparent materials single-crystal transistor spiroconjugation