Effect of Surfactants to The Electrical Properties of The Hole Transporting Layer of Organic Solar Cells - Nur Tahirah, Razali; Dominic Sanchez, Merom; Marini, Sawawi; Magdalene, Andrew-Munot; Shahrol, Mohamaddan; Mahshuri, Yusof; Siti Kudnie, Sahari (Pioneer Research & Development Group, 2019)