Highly efficient and stable white light organic light-emitting devices

Mei Fang Lin, Lei Wang, Rick W K WONG*, Kok Wai CHEAH, Hoi Lam TAM, Meng Ting Lee, Meng Huan Ho, Chin H. Chen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

A highly efficient two-element white light organic light-emitting device with a sky blue dopant BUBD-1 and a yellow dopant TBRb was fabricated. The device achieved an electroluminescence efficiency of 17.1 cdA and 7.9 lmW at 20 mA cm2. From 112 to 32 010 nits, the CIEx,y coordinates variation was Δ (x,y) <± (0.01,0.01), which is superior to common white light organic light-emitting devices (OLEDs) that tend to change color with drive conditions. Moreover, the device reached a half-decay t12 lifetime over 40 000 h at an initial luminance of 300 cd m2. This result is among the best records of fluorescent white light OLEDs.

Original languageEnglish
Article number073517
JournalApplied Physics Letters
Volume91
Issue number7
DOIs
Publication statusPublished - 2007

Scopus Subject Areas

  • Physics and Astronomy (miscellaneous)

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