Journal Pre-proof Improved short-circuit current density in bulk heterojunction solar cells with reduced graphene oxide-germanium dioxide nanocomposite in the photoactive layer Tabitha A. Amollo, Genene T. Mola, Vincent O. Nyamori PII: S0254-0584(20)30815-4 DOI: https://doi.org/10.1016/j.matchemphys.2020.123448 Reference: MAC 123448 To appear in: Materials Chemistry and Physics Received Date: 1 February 2018 Revised Date: 6 December 2018 Accepted Date: 16 June 2020 Please cite this article as: T.A. Amollo, G.T. Mola, V.O. Nyamori, Improved short-circuit current density in bulk heterojunction solar cells with reduced graphene oxide-germanium dioxide nanocomposite in the photoactive layer, Materials Chemistry and Physics (2020), doi: https://doi.org/10.1016/ j.matchemphys.2020.123448. This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. © 2020 Published by Elsevier B.V.