Composite film of poly(3,4-ethylenedioxythiophene): poly (styrenesulfonate) and MoO3 as an efficient hole injection layer for polymer light-emitting diodes
- Authors
- Kwon, Yongwon; Kim, Yongnam; Lee, Hyunkoo; Lee, Changhee; Kwak, Jeonghun
- Issue Date
- Jun-2014
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Polymer light-emitting diodes; Molybdenum oxide; PEDOT: PSS; Hole injection layer
- Citation
- ORGANIC ELECTRONICS, v.15, no.6, pp 1083 - 1087
- Pages
- 5
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 15
- Number
- 6
- Start Page
- 1083
- End Page
- 1087
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147308
- DOI
- 10.1016/j.orgel.2014.03.006
- ISSN
- 1566-1199
1878-5530
- 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.(C) 2014 Elsevier B. V. All rights reserved.
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