Application of zinc oxide-silver electrode for bottom emission organic light emitting diode

Chul Ho Ok, Jin Woo Han, Byeong Yong Kim, Sang Kuk Lee, Jeong Min Han, Dae Shik Seo, Jae Hyung Kim

Research output: Contribution to journalArticlepeer-review


The process for depositing indume-tin oxide (ITO) electrode on polymer substrate is not readily applicable at high temperature and shows poor electrical properties than the conventional ITO deposition process on glass substrate. Especially, the deformation of polymer substrate and residual stress yield the crack which degrade the performance of organic light emitting diode (OLED) unit. In this study, we developed low resistance ITO electrode, AZO(ITO-ZnO-Ag-ZnO-ITO) to apply to the fabrication of the bottom emission OLED unit. The performance of the AZO exhibited low surface resistance as 8ohm and the ITO electrodes were additionally deposited to guarantee the same work function as conventional ITO. The emissive efficiency was 92% at 550nm which almost corresponds to that of the conventional ITO.

Original languageEnglish
Pages (from-to)284-289
Number of pages6
JournalMolecular Crystals and Liquid Crystals
Publication statusPublished - 2009 Jan

Bibliographical note

Funding Information:
This work has been supported by the Ministry of Information & Communications of Korea under the Information Technology Research Center (ITRC) Program Address correspondence to Prof. Dae Shik Seo, Department of Electrical Engineering, Yonsei University, Seoul 120-749, Korea (ROK). E-mail:

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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