Highly Efficient Blue Light-Emitting Materials Based on Arylamine Substituted DPVBi Derivatives
- Authors
- Oh, Suhyun; Lee, Kum Hee; Seo, Ji Hyun; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- Aug-2011
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Blue OLEDs; DPVBi Derivatives; Horner-Wadsworth-Emmons Reaction
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.11, no.8, pp.7250 - 7253
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 11
- Number
- 8
- Start Page
- 7250
- End Page
- 7253
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/19838
- DOI
- 10.1166/jnn.2011.4798
- ISSN
- 1533-4880
- Abstract
- A series of arylamine substituted DPVBi derivatives (1-4) were synthesized via the Horner-Wadsworth-Emmons reaction. Their electroluminescent properties were examined by fabricating a multilayer OLED device with the following structure: ITO/DNTPD (40 nm)/NPB (20 nm)/2% DPVBi derivatives (1-4) doped in MADN (20 nm)/Alq(3) (40 nm)/Liq (1.0 nm)/Al. All devices showed efficient blue emission. In particular, a high efficiency blue OLED was fabricated using compound 1 as a dopant in the emitting layer. The maximum luminance, luminous efficiency, power efficiency and CIE coordinates of the blue OLED using compound 1 as a dopant were 16110 cd/m(2) at 10 V, 10.1 cd/A at 20 mA/cm(2), 4.37 Im/W at 20 mA/cm(2), and (x = 0.197, y = 0.358) at 8 V, respectively. Moreover, a device using compound 4 as the dopant exhibited efficient deep blue emission with a luminance, luminous efficiency, power efficiency and CIE coordinates of 7005 cd/m(2) at 10 V, 6.25 cd/A at 20 mA/cm(2), 2.50 Im/W at 20 mA/cm(2) and (x = 0.151, y = 0.143) at 8 V, respectively.
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