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Title: Effect of parylene layer on the performance of OLED
Authors: Ke, L.
Kumar, R.S.
Zhang, K.
Chua, S.-J.
Wee, A.T.S. 
Keywords: Hole transporting layer
Indium tin oxide
Parylene layer
Issue Date: Apr-2004
Citation: Ke, L., Kumar, R.S., Zhang, K., Chua, S.-J., Wee, A.T.S. (2004-04). Effect of parylene layer on the performance of OLED. Microelectronics Journal 35 (4) : 325-328. ScholarBank@NUS Repository.
Abstract: An organic light-emitting device structure with a thin parylene layer deposited by low-temperature chemical vapour deposition at the anode-organic interface was fabricated. Such a structure gives higher luminescence efficiency when operated at the same current density compared to one without the parylene layer. In addition, the devices with a thin parylene layer also show a smaller number and smaller size dark non-emissive areas, slower growth rate of the dark areas and a longer device lifetime. The modified surface of the indium tin oxide (ITO) shows an increased work function compared to that of the ITO surface alone and a reduced surface roughness, which contributes to the device performance improvement. The parylene layer is a conformal coating on the ITO surface, which could significantly stabilise the interface leading to a more uniform current density. It also provides a good barrier for blocking oxygen and moisture diffusion and hence reducing dark spot occurrence. © 2003 Published by Elsevier Ltd.
Source Title: Microelectronics Journal
ISSN: 00262692
DOI: 10.1016/S0026-2692(03)00238-6
Appears in Collections:Staff Publications

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