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Highly Conductive PEDOT:PSS Films with 1,3‐Dimethyl‐2‐Imidazolidinone as Transparent Electrodes for Organic Light‐Emitting Diodes
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- Authors
- Jin Hee Kim, Chul Woong Joo, Jonghee Lee, Yoon Kyung Seo, Joo Won Han, Ji Yoon Oh, Jong Su Kim, Seunggun Yu, Jae Hyun Lee, Jeong‐Ik Lee, Changhun Yun, Bum Ho Choi, Yong Hyun Kim
- Issue Date
- 2016-09
- Citation
- Macromolecular Rapid Communications, v.37, no.17, pp.1427-1433
- ISSN
- 1022-1336
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- Highly conductive poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) films as transparent electrodes for organic light-emitting diodes (OLEDs) are doped with a new solvent 1,3-dimethyl-2-imidazolidinone (DMI) and are optimized using solvent post-treatment. The DMI doped PEDOT:PSS films show significantly enhanced conductivities up to 812.1 S cm ¹. The sheet resistance of the PEDOT:PSS films doped with DMI is further reduced by various solvent post-treatment. The effect of solvent post-treatment on DMI doped PEDOT:PSS films is investigated and is shown to reduce insulating PSS in the conductive films. The solvent posttreated PEDOT:PSS films are successfully employed as transparent electrodes in white OLEDs. It is shown that the efficiency of OLEDs with the optimized DMI doped PEDOT:PSS films is higher than that of reference OLEDs doped with conventional solvent (ethylene glycol). The results present that the optimized PEDOT:PSS films with the new solvent of DMI can be a promising transparent electrode for low-cost, efficient ITO-free white OLEDs.
- KSP Keywords
- 3-dimethyl-2-imidazolidinone, 4-ethylenedioxythiophene):poly(4-styrenesulfonate)(PEDOT:PSS), Conductive film, Effect of solvent, ITO-free, Low-cost, Post-treatment, ethylene Glycol(Poly), highly conductive, light emitting diodes(LED), organic light emitting diode(OLED)