کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1788137 | 1023461 | 2012 | 4 صفحه PDF | دانلود رایگان |
The light emitting behavior of the electrophosphorescent devices with solution-processible hole transport layer and light emitting layer was characterized. We have introduced the hole-transporting stacked layer composed of poly(3,4-ethylenedioxy thiophene): poly(4-styrenesulfonate) [PEDOT:PSS] and thin perfluorinated ionomer, aiming for the improvement of charge injection and transport with corresponding high efficiency behavior. In order to provide a suitable work function, composition and thickness of the ultra-thin perfluorinated ionomer was optimized for being an interfacial layer condition; 34 cd/A of green phosphorescent device was obtained while the control device without ionomer shows the luminous efficiency of 29 cd/A. Both for devices with vacuum-deposited and solution-processed electrophosphorescent emitters, change of the device efficiencies were analyzed in terms of the work function, surface chemical composition, and charge conduction behavior.
Journal: Current Applied Physics - Volume 12, Supplement 1, September 2012, Pages e38–e41