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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.
플라즈마 공중합 고분자 절연막과 펜타센 반도체막의 계면특성
신백균(Paik-Kyun Shin),임헌찬(H-C Lim),육재호(J-H Yuk),박종관(J-K Park),조기선(G-S Jo),남광우(K-Y Nam),박종국(J-K Park),김용운(Y-W Kim),정무영(M-Y Chung) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.7
Thin films of pp(ST-Co-VA) were fabricated by plasma deposition polymerization (PVDPM) technique. Properties of the plasma polymerized pp(ST-Co-VA) thin films were investigated for application to semiconductor device as insulator. Thickness, dielectric property, composition of the pp(ST-Co-VA) thin films were investigated considering the relationship with preparation condition such as gas pressure and deposition time. In order to verify the possibility of application to organic thin film transistor, a pentacene thin film was deposited on the pp(ST-Co-VA) insulator by vacuum thermal evaporation technique. Crystalline property of the pentacene thin film was investigated by XRD and SEM, FT-IR. Surface properties at the pp(ST-Co-VA)/pentacene interface was investigated by contact angle measurement. The pp(ST-Co-VA) thin film showed a high-k (k=4.6) and good interface characteristic with pentacene semiconducting layer, which indicates that it would be a promising material for organic thin film transistor (OTFT) application.