期刊
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
卷 551, 期 -, 页码 78-85出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421406.2011.600149
关键词
OLED; flexible OLED; roll-to-roll process; TCO film; flexible substrate
In this study polyethylene naphthalate(PEN) and polyethersulfone(PES) films were chosen as a flexible substrates for fabrication of organic light emitting diode(OLED) devices. Hard coating was applied on both PEN and PES films utilizing UV curable resin. The transparent conductive ITO/Ag/ITO multilayer was deposited by the roll-to-roll sputter on the polymer films with hard coating. The UV hard coating of thin film on the polymer films improved both the surface roughness (50% in case of PEN film) and the transmittance in the visible region. In the subsequent multilayer transparent conductive layer formation, the optimum condition was obtained in the ITO(50 nm)/Ag(17 nm)/ITO(50 nm) multilayer structure. The OLED's fabricated with the optimized multilayer conductive films exhibited high luminance and current efficiency under low operation voltages.
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