期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 1, 期 19, 页码 3250-3254出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc00855j
关键词
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资金
- Industrial Strategic Technology Development Program (Development of a Core Technology for High Performance AMOLED on Plastic) [10035225]
- MKE/KEIT
We report a polymer light-emitting diode (PLED) using solution processed tungsten-oxides (WOx). Coating of a thin WOx layer on PEDOT:PSS increases the current efficiency of PLED from 9.11 to 9.90 cd A(-1) because of the improved conductivity of the PEDOT: PSS due to the incorporation of WOx. Improvement of the conductivity of PEDOT: PSS promotes hole injection into the emission layer. The lifetime of a PLED with WOx layers on both sides of PEDOT: PSS is 1.8 x 10(6) h which is around 20 times longer than that of the control device at 1000 cd m(-2). The enhanced lifetime is due to the suppression of the indium diffusion from ITO to PEDOT: PSS by WOx and also due to the prevention of acidic damage that can occur to ITO and the organic emission layer by sulfate ions in PEDOT:PSS.
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