Origin of optical bandgap fluctuations in graphene oxide Alessandro Henrique de Lima, Camila Thomacelli Tavares, Clemilda Corrêa Soares da Cunha, Nayton Claudinei Vicentini, Giovani Romeu Carvalho, Benjamin Fragneaud, Indhira Oliveira Maciel, Cristiano Legnani, Welber Gianini Quirino, Luiz Fernando Cappa de Oliveira et al. (2 more) Eur. Phys. J. B, 93 6 (2020) 105 Published online: 10 June 2020 DOI: 10.1140/epjb/e2020-100578-7