The influence of exciton behavior on luminescent characteristics of organic light-emitting diodes

被引：4
|
作者：
Zhao, D. W. [1 ]
Zhang, F. J.
Song, S. F.
Xu, C.
Xu, Z.
机构：
[1] Jiao Tong Univ, Inst Optoelect Technol, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Liaoning Univ, Coll Phys, Shenyang 110036, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2007年 / 253卷 / 18期
基金：
中国国家自然科学基金;
关键词：
photoluminescence (PL); electroluminescence (EL); polarization; dissociation; exciton; CONJUGATED POLYMERS; PHOTOLUMINESCENCE; DISSOCIATION;
D O I：
10.1016/j.apsusc.2007.03.044
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We used N,N'-bis-(1-naphthyl)-N,N'-1-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB), 4,4'-N,N'-dicarbazole-biphenyl (CBP) and tris(8-hydroxyquinoline) aluminum (Alq(3)) to fabricate tri-layer electroluminescent (EL) device (device structure: ITO/NPB/CBP/Alq(3)/Al). In photoluminescence (PL) spectra of this device, the emission from NPB shifted to shorter wavelength accompanying with the decrease of its emission intensity and moreover the emission intensity of Alq(3) increased relatively with the increase of reverse bias voltage. The blue-shifted emission and the decrease in emission intensity of NPB were attributed to the polarization and dissociation of NPB excitons under reverse bias voltage. The increase of emission intensity of Alq(3) benefited from the recombination of electrons (produced by the dissociation of NPB exciton) and holes (injected from the Al cathode). (c) 2007 Published by Elsevier B.V.
引用
收藏
页码：7412 / 7415
页数：4
相关论文
共 50 条
  • [11] Tunneling Injection and Exciton Diffusion of White Organic Light-Emitting Diodes with Composed Buffer Layers
    Yang, Su-Hua
    Wu, Jian-Ping
    Huang, Tao-Liang
    Chung, Bin-Fong
    JOURNAL OF ELECTRONIC MATERIALS, 2018, 47 (02) : 1232 - 1238
  • [12] Highly efficient terbium(III)-based organic light-emitting diodes obtained by exciton confinement
    Yu, Gang
    Ding, Fei
    Wei, Huibio
    Zhao, Zifeng
    Liu, Zhiwei
    Bian, Zuqiang
    Xiao, Lixin
    Huang, Chunhui
    JOURNAL OF MATERIALS CHEMISTRY C, 2016, 4 (01) : 121 - 125
  • [13] Tunneling Injection and Exciton Diffusion of White Organic Light-Emitting Diodes with Composed Buffer Layers
    Su-Hua Yang
    Jian-Ping Wu
    Tao-Liang Huang
    Bin-Fong Chung
    Journal of Electronic Materials, 2018, 47 : 1232 - 1238
  • [14] The Leap from Organic Light-Emitting Diodes to Organic Semiconductor Laser Diodes
    Adachi, Chihaya
    Sandanayaka, Atula S. D.
    CCS CHEMISTRY, 2020, 2 (04): : 1203 - 1216
  • [15] Exciton Quenching due to Hole Trap Formation in Aged Polymer Light-Emitting Diodes
    Roerich, Irina
    Niu, Quan
    van der Zee, Bas
    Rosendo, Esther del Pino
    Craciun, Nicoleta Irina
    Ramanan, Charusheela
    Blom, Paul W. M.
    ADVANCED ELECTRONIC MATERIALS, 2020, 6 (07)
  • [16] Organic light-emitting diodes based on pyrazoloquinoxaline derivatives
    Pokladko-Kowar, Monika
    Wojtasik, Katarzyna
    PRZEGLAD ELEKTROTECHNICZNY, 2022, 98 (09): : 220 - 223
  • [17] Dipyrenylcarbazole Derivatives for Blue Organic Light-Emitting Diodes
    Kumchoo, Trakool
    Promarak, Vinich
    Sudyoadsuk, Taweesak
    Sukwattanasinitt, Mongkol
    Rashatasakhon, Paitoon
    CHEMISTRY-AN ASIAN JOURNAL, 2010, 5 (10) : 2162 - 2167
  • [18] Emergence of Flexible White Organic Light-Emitting Diodes
    Luo, Dongxiang
    Chen, Qizan
    Liu, Baiquan
    Qiu, Ying
    POLYMERS, 2019, 11 (02)
  • [19] Performance and defects in phosphorescent organic light-emitting diodes
    Lee, C. W.
    Renaud, C.
    Le Rendu, P.
    Nguyen, T. P.
    Seneclauze, B.
    Ziessel, R.
    Kanaan, H.
    Jolinat, P.
    SOLID STATE SCIENCES, 2010, 12 (11) : 1873 - 1876
  • [20] Determination of the exciton singlet-to-triplet ratio in single-layer organic light-emitting diodes
    Carvelli, M.
    Janssen, R. A. J.
    Coehoorn, R.
    PHYSICAL REVIEW B, 2011, 83 (07):
12345