Molecular engineering of indenoindene-3-ethylrodanine acceptors with A2-A1-D-A1-A2 architecture for promising fullerene-free organic solar cells - Khalid, Muhammad; Momina; Imran, Muhammad; Rehman, Muhammad Fayyaz ur; Braga, Ataualpa Albert Carmo; Akram, Muhammad Safwan (Scientific Reports, 2021)