Enhanced power efficiency of organic light-emitting diodes using pentacene on CF 4-plasma-treated indium tin oxide anodes

Young Wook Park, Hyun Ju Choi, Jin Hwan Choi, Tae Hyun Park, Jin Wook Jeong, Eun Ho Song, Byeong Kwon Ju

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this letter, we demonstrate high-performance organic light-emitting diodes (OLEDs) by matching various hole injection-transport layers (HITLs) with plasma surface treatments. The OLED device with pentacene HITL on CF 4-plasma-treated indium tin oxide showed the highest performance due to relatively improved hole injection and the high-hole-mobility characteristics of the pentacene. Using a high-electron-mobility material as an electron transport layer to improve the carrier balance of electrons and holes, the electroluminescent efficiency was further improved. These methods are simple and promising for the enhancement of OLED performances. These findings will be applicable to mobile displays that feature low electric power consumption.

Original languageEnglish
Article number6221945
Pages (from-to)1156-1158
Number of pages3
JournalIEEE Electron Device Letters
Issue number8
Publication statusPublished - 2012

Bibliographical note

Funding Information:
Manuscript received March 14, 2011; revised May 1, 2012; accepted May 1, 2012. Date of publication June 20, 2012; date of current version July 20, 2012. This work was supported in part by the Industrial Strategic Technology Development Program (Development of Fundamental Technologies for Flexible Combined-Function Organic Electronic Device) funded by the Ministry of Knowledge Economy (Korea) under Grant KI002104, by the Basic Science Research Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (MEST) under Grant CAFDC-20120000816, and by the World Class University Project by MEST under Grant R32-2008-000-10082-0. The review of this letter was arranged by Editor C. Jagadish.


  • CF -plasma (CF-{4} \hbox{-} \hbox{P}$) treatment
  • Carrier mobility
  • hole injection-transport layer (HITL)
  • pentacene

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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