Time-dependent efficiency measurements of polymer solar cells with dye additives: unexpected initial increase of efficiencyKyle J. Bandaccari, Grace E. Chesmore, Mitchel Bugaj, Parisa Tajalli-Tehrani Valverde, Richard P. Barber and Brian J. McNelisEPJ Photovolt., 9 (2018) 4DOI: https://doi.org/10.1051/epjpv/2018003
