Enhancement of the Luminance Efficiency due to an Embedded Self-Assembled Monolayer in Organic Light-Emitting Devices
- Title
- Enhancement of the Luminance Efficiency due to an Embedded Self-Assembled Monolayer in Organic Light-Emitting Devices
- Author
- 김태환
- Keywords
- FLAT-PANEL DISPLAYS; INDIUM TIN OXIDE; HOLE-INJECTION; DIODES; EMISSION; LAYER; ALKANETHIOL; TRANSITION; AU(111); VOLTAGE
- Issue Date
- 2013-11
- Publisher
- JAPAN SOCIETY OF APPLIED PHYSICS
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSIC, 권: 52, 호: 11, 페이지: 11NK01
- Abstract
- The electrical and optical properties of organic light-emitting devices (OLEDs) with and without a self-assembled monolayer (SAM) were investigated, and the effect of an embedded SAM was clarified. The contact angles of COOH-terminated alkanethiol SAMs were smaller than those of CH3-terminated alkanethiol SAMs. The operating voltage of OLEDs with COOH-terminated alkanethiol SAMs was 4.4 V lower than that with CH3-terminated alkanethiol SAMs. The luminance of OLEDs with COOH-terminated alkanethiol SAMs was higher than that with CH3-terminated alkanethiol SAMs. The enhancement of the luminance efficiency of OLEDs with COOH-terminated alkanethiol SAMs was attributed to the increase in hole injection due to a decrease in the chain length of the COOH-terminated alkanethiols, resulting in a better balance between the numbers of holes and electrons at an emitting layer in the OLEDs. (C) 2013 The Japan Society of Applied Physics
- URI
- http://iopscience.iop.org/article/10.7567/JJAP.52.11NK01/metahttp://hdl.handle.net/20.500.11754/46288
- ISSN
- 0021-4922; 1347-4065
- DOI
- 10.7567/JJAP.52.11NK01
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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