skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer

Abstract

We demonstrate efficient organic white light-emitting devices (LEDs), using N,N{prime}-diphenyl-N,N{prime}-bis(1-naphthyl){endash}(1,1{prime}-biphenyl)-4,4{prime}-diamine (NPB) as the hole-transporting layer, 1,6-bis(2-hydroxyphenyl)pyridine boron complex [(dppy)BF] as the emitting layer, tris-(8-hydroxyquinoline)aluminum (Alq) as the electron-transporting and chromaticity-tuning layer. The white light comes from exciplex emission at the solid-state interface between (dppy)BF and NPB in addition to the exciton emission from NPB and (dppy)BF, respectively. The chromaticity of white emission can be tuned by adjusting the thickness of the Alq layer. The white LEDs with an Alq thickness of 15 nm exhibit a maximum luminescence of 2000 cd/m2 and efficiency of 0.58 lm/W, and the Commission Internationale De l{close_quote}Eclairage coordinates of resulting emission vary from (0.29,0.33) to (0.31,0.35) with increasing forward bias from 10 to 25 V. The region is very close to the equienergy white point (0.33,0.33). {copyright} 2001 American Institute of Physics.

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40204518
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 78; Journal Issue: 25; Other Information: DOI: 10.1063/1.1379788; Othernumber: APPLAB000078000025003947000001; 007125APL; PBD: 18 Jun 2001; Journal ID: ISSN 0003-6951
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BORON; EFFICIENCY; EXCITONS; LUMINESCENCE; PHYSICS; THICKNESS

Citation Formats

Feng, Jing, Li, Feng, Gao, Wenbao, Liu, Shiyong, Liu, Yu, and Wang, Yue. White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer. United States: N. p., 2001. Web. doi:10.1063/1.1379788.
Feng, Jing, Li, Feng, Gao, Wenbao, Liu, Shiyong, Liu, Yu, & Wang, Yue. White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer. United States. https://doi.org/10.1063/1.1379788
Feng, Jing, Li, Feng, Gao, Wenbao, Liu, Shiyong, Liu, Yu, and Wang, Yue. 2001. "White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer". United States. https://doi.org/10.1063/1.1379788.
@article{osti_40204518,
title = {White light emission from exciplex using tris-(8-hydroxyquinoline)aluminum as chromaticity-tuning layer},
author = {Feng, Jing and Li, Feng and Gao, Wenbao and Liu, Shiyong and Liu, Yu and Wang, Yue},
abstractNote = {We demonstrate efficient organic white light-emitting devices (LEDs), using N,N{prime}-diphenyl-N,N{prime}-bis(1-naphthyl){endash}(1,1{prime}-biphenyl)-4,4{prime}-diamine (NPB) as the hole-transporting layer, 1,6-bis(2-hydroxyphenyl)pyridine boron complex [(dppy)BF] as the emitting layer, tris-(8-hydroxyquinoline)aluminum (Alq) as the electron-transporting and chromaticity-tuning layer. The white light comes from exciplex emission at the solid-state interface between (dppy)BF and NPB in addition to the exciton emission from NPB and (dppy)BF, respectively. The chromaticity of white emission can be tuned by adjusting the thickness of the Alq layer. The white LEDs with an Alq thickness of 15 nm exhibit a maximum luminescence of 2000 cd/m2 and efficiency of 0.58 lm/W, and the Commission Internationale De l{close_quote}Eclairage coordinates of resulting emission vary from (0.29,0.33) to (0.31,0.35) with increasing forward bias from 10 to 25 V. The region is very close to the equienergy white point (0.33,0.33). {copyright} 2001 American Institute of Physics.},
doi = {10.1063/1.1379788},
url = {https://www.osti.gov/biblio/40204518}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 25,
volume = 78,
place = {United States},
year = {Mon Jun 18 00:00:00 EDT 2001},
month = {Mon Jun 18 00:00:00 EDT 2001}
}