White light emitting devices by doping polyfluorene with two red emitters - Deus, Jeferson F. de; Faria, Gregório Couto; Faria, Roberto Mendonça; Iamazaki, Eduardo T.; Atvars, Teresa D. Z.; Cirpan, Ali; Akcelrud, Leni (Journal of Photochemistry and Photobiology A, 2013)