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임재성(J.S. Lim),신백균(P.K. Shin),임경범(K.B. Lim),송진호(J.H. Song),김찬영(C.Y. Kim),이백수(B.S. Lee),정영식(Y.S. Jeung),임헌찬(H.C. Lim) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
In this research, an organic thin film passivation layer was newly adopted to protect the organic layer from ambient moisture and oxygen. As the organic thin film passivation layer, poly methyl methacrylate thin films (ppMMA) were deposited using a plasma polymerization technique. In order to their passivation performance for OLEDs, water vapor transmission rate (WVTR) of the ppMMAs were analyzed and luminance-current-voltage (L-I-V)/luminance-time (L-T) characteristics of the OLEDs with and without ppMMA passivation layer were investigated. The OLEDs had a structure of ITO/TPD (HTL)/Alq3 (EML&ETL)/Al. The OLED with ppMMA passivation layer showed improved L-T performance than that of without ppMMA passivation layer.