Red Fluorescent Organic Light-Emitting Diodes Using Modified Pyran-containing DCJTB Derivatives

Two red fluorescent DCJTB derivatives (Red 1 and 2) based on modified pyrans were synthesized and their electroluminescent properties were investigated. Multilayered OLEDs were fabricated with the device structure of ITO/NPB (40 nm)/Red 1, 2 or DCJTB (0.5 or 1%): $Alq_3$ (20 nm)/$Alq_3$ (40 nm)/Liq...

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Published inBulletin of the Korean Chemical Society Vol. 31; no. 10; pp. 2884 - 2888
Main Authors Lee, Kum-Hee, Kim, Sung-Min, Kim, Jeong-Yeon, Kim, Young-Kwan, Yoon, Seung-Soo
Format Journal Article
LanguageEnglish
Korean
Published 대한화학회 20.10.2010
Subjects
화학
OLED
Red fluorescence
DCJTB derivatives
Pyran
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Summary:Two red fluorescent DCJTB derivatives (Red 1 and 2) based on modified pyrans were synthesized and their electroluminescent properties were investigated. Multilayered OLEDs were fabricated with the device structure of ITO/NPB (40 nm)/Red 1, 2 or DCJTB (0.5 or 1%): $Alq_3$ (20 nm)/$Alq_3$ (40 nm)/Liq (2 nm)/Al. All devices exhibited efficient red emissions. In particular, a device containing emitter Red 2 as a dopant in the emitting layer, the maximum luminance was $8737\;cd/m^2$ at 12.0 V, the luminous and power efficiencies were 2.31 cd/A and 1.25 lm/W at $20\;mA/cm^2$, respectively. The peak wavelength of the electroluminescence was 638 nm with the CIE (x,y) coordinates of (0.63, 0.36) at 7.0 V.
Bibliography:KISTI1.1003/JNL.JAKO201030560144812
G704-000067.2010.31.10.037
ISSN:0253-2964
1229-5949
DOI:10.5012/bkcs.2010.31.10.2884