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Title: Highly efficient blue OLEDs based on diphenylaminofluorenylstyrenes end-capped with heterocyclic aromatics

Abstract

In this paper, we have designed four diphenylaminofluorenylstyrene derivatives end-capped with heterocyclic aromatic groups, such as 9-phenylcabazole, 4-dibenzofuran, 2-benzoxazole, 2-quinoxaline, respectively. These materials showed blue to red fluorescence with maximum emission wavelengths of 476–611 nm, respectively, which were dependent on the structural and electronic nature of end-capping groups. To explore the electroluminescent properties of these materials, multilayer OLEDs were fabricated in the following sequence: ITO/DNTPD (40 nm)/NPB (20 nm)/2% doped in MADN (20 nm)/Alq{sub 3} (40 nm)/Liq. (1 nm)/Al. Among those, a device exhibited a highly efficient blue emission with the maximum luminance of 14,480 cd/m{sup 2} at 9 V, the luminous efficiency of 5.38 cd/A at 20 mA/cm{sup 2}, power efficiency of 2.77 lm/W at 20 mA/cm{sup 2}, and CIE{sub x,y} coordinates of (0.147, 0.152) at 8 V, respectively.

Authors:
 [1]; ;  [2];  [1]
  1. Department of Chemistry, Sungkyunkwan University, Suwon 440-746 (Korea, Republic of)
  2. Department of Information Display, Hongik University, Seoul 121-791 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22215498
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 47; Journal Issue: 10; Conference: IFFM2011: 2011 international forum on functional materials, Jeju Island (Korea, Republic of), 28-31 Jul 2011, AFM-2: 2. special symposium on advances in functional materials, Jeju Island (Korea, Republic of), 28-31 Jul 2011; Other Information: Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DOPED MATERIALS; EFFICIENCY; FLUORESCENCE; LAYERS; LIGHT EMITTING DIODES; NUCLEAR MAGNETIC RESONANCE; SYNTHESIS

Citation Formats

Oh, Suhyun, Lee, Kum Hee, Kim, Young Kwan, and Yoon, Seung Soo, E-mail: ssyoon@skku.edu. Highly efficient blue OLEDs based on diphenylaminofluorenylstyrenes end-capped with heterocyclic aromatics. United States: N. p., 2012. Web. doi:10.1016/J.MATERRESBULL.2012.04.055.
Oh, Suhyun, Lee, Kum Hee, Kim, Young Kwan, & Yoon, Seung Soo, E-mail: ssyoon@skku.edu. Highly efficient blue OLEDs based on diphenylaminofluorenylstyrenes end-capped with heterocyclic aromatics. United States. doi:10.1016/J.MATERRESBULL.2012.04.055.
Oh, Suhyun, Lee, Kum Hee, Kim, Young Kwan, and Yoon, Seung Soo, E-mail: ssyoon@skku.edu. Mon . "Highly efficient blue OLEDs based on diphenylaminofluorenylstyrenes end-capped with heterocyclic aromatics". United States. doi:10.1016/J.MATERRESBULL.2012.04.055.
@article{osti_22215498,
title = {Highly efficient blue OLEDs based on diphenylaminofluorenylstyrenes end-capped with heterocyclic aromatics},
author = {Oh, Suhyun and Lee, Kum Hee and Kim, Young Kwan and Yoon, Seung Soo, E-mail: ssyoon@skku.edu},
abstractNote = {In this paper, we have designed four diphenylaminofluorenylstyrene derivatives end-capped with heterocyclic aromatic groups, such as 9-phenylcabazole, 4-dibenzofuran, 2-benzoxazole, 2-quinoxaline, respectively. These materials showed blue to red fluorescence with maximum emission wavelengths of 476–611 nm, respectively, which were dependent on the structural and electronic nature of end-capping groups. To explore the electroluminescent properties of these materials, multilayer OLEDs were fabricated in the following sequence: ITO/DNTPD (40 nm)/NPB (20 nm)/2% doped in MADN (20 nm)/Alq{sub 3} (40 nm)/Liq. (1 nm)/Al. Among those, a device exhibited a highly efficient blue emission with the maximum luminance of 14,480 cd/m{sup 2} at 9 V, the luminous efficiency of 5.38 cd/A at 20 mA/cm{sup 2}, power efficiency of 2.77 lm/W at 20 mA/cm{sup 2}, and CIE{sub x,y} coordinates of (0.147, 0.152) at 8 V, respectively.},
doi = {10.1016/J.MATERRESBULL.2012.04.055},
journal = {Materials Research Bulletin},
number = 10,
volume = 47,
place = {United States},
year = {Mon Oct 15 00:00:00 EDT 2012},
month = {Mon Oct 15 00:00:00 EDT 2012}
}