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Composite Film of Poly(3,4-Ethylenedioxythiophene):Poly(Styrenesulfonate) and MoO3 as an Efficient Hole Injection Layer for Polymer Light-Emitting Diodes
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- Authors
- Yongwon Kwon, Yongnam Kim, Hyunkoo Lee, Changhee Lee, Jeonghun Kwak
- Issue Date
- 2014-06
- Citation
- Organic Electronics, v.15, no.6, pp.1083-1087
- ISSN
- 1566-1199
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Project Code
- 13VB1900, The core technology development of light and space adaptable new mode display for energy saving on 7inch and 2 W, Chu Hye Yong
- Abstract
- We demonstrate improved performances in polymer light-emitting diodes (PLEDs) using a composite film of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) and MoO3 powder as a hole injection layer. The PLED with the composite film exhibits the current efficiency of 13.5 cd/A, driving voltage of 3.4 V, and half lifetime of 108.1 h, while those values of the PLED with a pristine PEDOT:PSS was 11.3 cd/A, 3.8 V, and 41.5 h, respectively. We also analyze the morphological, optical and electrical properties of the composite films by atomic force microscopy (AFM), UV-Vis-IR absorption, and ultraviolet photoemission spectroscopy (UPS). This work suggests that mixing MoO3 into PEDOT:PSS is a simple and promising technique for use solution-based devices as an hole injection layer. © 2014 Elsevier B.V. All rights reserved.
- KSP Keywords
- 1 H, 4-Ethylenedioxythiophene(EDOT), 4-ethylenedioxythiophene):poly(4-styrenesulfonate)(PEDOT:PSS), Atomic force microscope(AFM), Atomic force microscopy (afm), Composite film, Hole injection layer(HIL), Optical and electrical properties, Polymer light-emitting diodes(PLEDs), UV-Vis-IR absorption, current efficiency