Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1443332 | Synthetic Metals | 2007 | 4 Pages |
Abstract
Employment of multilayer heterostructures is a common approach to achieve efficiency and stable organic light emitting diodes (OLEDs). In this work, we report multilayer blue polymer light-emitting devices (PLEDs) by using spin-coated fluorene-triarylamine copolymers as interlayers between the conductive polymer poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT) and the emitting layer. A blue PLED with stepped hole injection profile yields an external quantum efficiency of 6.0% at a luminance of 9500 cd/m2 at 5.5 V and an extrapolated lifetime of more than 18,000 h from 100 cd/m2.
Related Topics
Physical Sciences and Engineering
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Authors
Lian Duan, Byung Doo Chin, Nam Choul Yang, Mu-Hyun Kim, Hye Dong Kim, Seong Taek Lee, Ho Kyoon Chung,