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Nd:YAG 레이저로 표면처리된 ITO를 전극으로 한 유기EL 소자의 특성
노임준(I.J. No),신백균(P.K. Shin),김형권(H.K. Kim),김용운(Y.W. Kim),임응춘(Y.C. Lim),박강식(K.S. Park),정무영(M.Y. Chung) 대한전기학회 2006 대한전기학회 학술대회 논문집 Vol.2006 No.7
ITO(Indium-Tin-Oxide) was used as anode material for OLEO. Characteristics of ITO have great effect on efficiency of OLEOs(Organic light emitting diodes). ITO surface was treated by Nd:YAG laser in order to improve its chemical properties, wettability, adhesive property and to remove the surface contaminants while maintaining its original function. In this study, main purpose was to improve the efficiency of OLEOs by the ITO surface treatment: ITO surface was treated using a Nd:YAG(λ=266㎚, pulse) with a fixed power of 0.06[w] and various stage scanning velocities. Surface morphology of the ITO was investigated by AFM. Test OLEDs with surface treated ITO were fabricated by deposition of TPO(HTL), Alq3 (ETL/EML) and Al(cathode) thin films. Device performance of the OLEDs such as V-I-L was investigated using Source Measurement Unit (SMU: Keithly. Model 2400) and Luminance Measurement (TOPCON. BM-8).
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.