Amollo T. A.,Genene Tessema Mola.,Nyamori Vincent .2025-07-172025-07-172018-05DOI: 10.1007/s10854-018-8781-1http://41.89.96.81:4000/handle/123456789/2225enPolymer solar cells with reduced graphene oxide–germanium quantum dots nanocomposite in the hole transport layerArticle