Degraded efficiency of blue phosphorescent organic light-emitting diode through aging in ambient condition

Sungkyu Lee, Ho Won Lee, Inyeob Na, Song Eun Lee, Jae Woo Lee, Han Kyu Yoo, Kyo Min Hwang, Gyu Tae Kim, Jaehoon Park, Young Kwan Kim

Research output: Contribution to journalArticlepeer-review


We demonstrated the influence of the air on blue phosphorescent organic light-emitting diodes by exposing the position of organic layers for various ambient exposure times to construct the disordered organic-organic interface in this work. To compare the effects of each hole and electron transporting path, organic layers were exposed according to the exciton blocking layer and emitting layer. Then we analyzed electrical and morphological properties using current-voltage-luminance measurement as well as other electrical and chemical analysis, such as impedance spectroscopy and X-ray photoelectron spectroscopy.

Original languageEnglish
Pages (from-to)10319-10324
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Issue number10
Publication statusPublished - 2016 Oct

Bibliographical note

Funding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (No. 2015R1A6A1A03031833), the MSIP (Ministry of Science, ICT and Future Planning), Korea, under the ITRC (Information Technology Research Center) support program (IITC-2015-H8501-15-1009) supervised by the IITP (Institute for Information and communications Technology Promotion).

Publisher Copyright:
Copyright © 2016 American Scientific Publishers All rights reserved.


  • Ambient exposure
  • Blue phosphorescent organic light-emitting diode
  • Degradation
  • Organic-organic interface

ASJC Scopus subject areas

  • Bioengineering
  • General Chemistry
  • Biomedical Engineering
  • General Materials Science
  • Condensed Matter Physics


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