Characterization of high efficient red phosphorescent OLEDs fabricated on flexible substrates

Sung Hyun Kim, Yoo Jin Lee, Ki Nam Byun, Sang Yun Jung, Bum Sung Lee, Han Sung Yoo

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


In this study, we have applied a new iridium(Ir) complex as a red dopant and fabricated a red phosphorescent organic light emitting diodes(OLEDs) on a flexible polycarbonate(PC) substrate. Also, we have investigated the electrical and optical properties of the devices with a structure of Al/LiF/Alq 3/(RD05 doped)BAlq/NPB/2-TNATA/ITO/PC substrate. Our device showed the lightening efficiency of > 30 cd/A at an initial brightness of 1000 cd/m2. The CIE(Commission Internationale de L'Eclairage) coordinates for the device were (0.62, 0.37) at a current density of 1 mA/cm2. In addition, although the sheet resistance of ITO films on PC substrate is higher than that on glass substrate, the flexible OLED showed much better lightening efficiency without much increase in operating voltage. copyright The Electrochemical Society.

Original languageEnglish
Pages (from-to)7-10
Number of pages4
JournalECS Transactions
Issue number35
Publication statusPublished - 2006
Externally publishedYes
EventOrganic and Biological Electrochemistry Posters (General) - 208th Electrochemical Society Meeting - Los Angeles, CA, United States
Duration: 2005 Oct 162005 Oct 21

ASJC Scopus subject areas

  • General Engineering


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