Contact printing of the emitting layer for high performance multilayered phosphorescent organic light-emitting diodes

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Efficient multilayered organic light-emitting diodes (OLEDs) were fabricated using contact printing. In order to overcome the mixing problem occurring between the organic layers during the solution processes, contact printing was utilized on a small molecule layer. Since this contact printing allows multilayer stacking without the damage caused by organic solvents, high-performance OLEDs could be fabricated with solution-based small molecules employing a low cost process. In this study, the performance of the multilayered OLEDs manufactured by the contact printing process is significantly enhanced than that found in spin-coated devices.

Original languageEnglish
Pages (from-to)1063-1067
Number of pages5
JournalOrganic Electronics
Volume12
Issue number6
DOIs
Publication statusPublished - 2011 Jun

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, Science and Technology (MEST) ( CAFDC-20100009869 ), World Class University ( WCU, R32-2008-000-10082-0 ) Project of the MEST (KOSEF), and the IT R&D Program of MKE/KEIT (No. 2009-F-016-01 , Development of Eco-Emotional OLED Flat-Panel Lighting). We thank the staff of KBSI for technical assistance. T.H. Park was financially supported by Hi Seoul Science (Humanities) Fellowship funded by Seoul Scholarship Foundation.

Keywords

  • Contact printing
  • Multilayer
  • Organic light-emitting diodes
  • Small molecule
  • Solution process

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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