Evaluation of luminances and yields for red, green, and blue organic light emitting diodes P. Taillepierre, R. Antony and A. Moliton Eur. Phys. J. Appl. Phys., 30 3 (2005) 159-166 Published online: 14 April 2005 DOI: 10.1051/epjap:2005030