Ottmar, M.M.OttmarHohnholz, D.D.HohnholzWedel, A.A.WedelHanack, M.M.Hanack2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19564710.1016/S0379-6779(99)00046-62-s2.0-0032658830en668620Organic single- and double-layer electroluminescent devices based on substituted phthalocyaninesjournal article