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Efficiency and Aging Comparison Between N,N′-Bis (3-methylphenyl)-N,N′-diphenylbenzidine (TPD) and N,N′-Di-[(1-naphthalenyl)-N,N′-diphenyl]-1,1′-biphenyl-4,4′-diamine (NPD) Based OLED Devices
Maria Grazia Maglione, Carla Minarini, Riccardo Miscioscia, Giuseppe Nenna, Emma Romanelli, Paolo Tassini