Organic Light-Emitting Diodes with Low Turn-On Voltages and Improved Stability Featuring a PTCDI-C13:CuPc Mixed Hole Injection Layer
SCIE
SCOPUS
- Title
- Organic Light-Emitting Diodes with Low Turn-On Voltages and Improved Stability Featuring a PTCDI-C13:CuPc Mixed Hole Injection Layer
- Authors
- Yun, WM; Jang, J; Nam, S; Park, CE; Kim, SH; Chung, DS
- Date Issued
- 2014-08
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Abstract
- We report herein that a mixed layer of the electron-donating copper phthalocyanine (CuPc) and electron-accepting N,N'-ditridecyl perylene diimide (PTCDI-C13) can be an efficient hole injection layer (HIL) for high-performance organic light-emitting diodes (OLEDs). From photophysical, morphological, and structural studies combined with electrical analysis based on the Mott-Schottky model, we conclude that the excellent miscibility between CuPc and PTCDI-C13 enables highly efficient charge transfer, and thus effective p-doping of CuPc, leading to increased hole conductivity of the HIL. As a result, turn-on voltages as low as 2.45 V and greatly improved thermal stabilities as compared to those of OLEDs with conventional CuPc HILs are observed.
- Keywords
- Organic Light Emitting Diode; Hole Injection Layer; Turn on Voltage; Stability; PTCDI; INDIUM-TIN-OXIDE; ELECTROLUMINESCENT DEVICES; ENHANCED PERFORMANCE; PLASMA TREATMENT
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/14106
- DOI
- 10.1166/SAM.2014.1940
- ISSN
- 1947-2935
- Article Type
- Article
- Citation
- SCIENCE OF ADVANCED MATERIALS, vol. 6, no. 8, page. 1676 - 1680, 2014-08
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