White electroluminescence from stacked organic light emitting diode

被引：14

作者：

Tyagi, Priyanka ^{[1
]}

Srivastava, Ritu ^{[1
]}

Kumar, Arunandan ^{[1
]}

Rai, Virendra Kumar ^{[1
]}

Grover, Rakhi ^{[1
]}

Kamalasanan, M. N. ^{[1
]}

机构：

[1] CSIR, Natl Phys Lab, Polymer & Soft Mat Sect, Ctr Organ Elect, New Delhi 110012, India

来源：

SYNTHETIC METALS | 2010年 / 160卷 / 7-8期

关键词：

Electroluminescence; SOLED; Monte-Carlo simulation; Gaussian DOS; MONTE-CARLO; RECOMBINATION; RELAXATION; DIFFUSION; SYSTEMS; DEVICES; BLUE;

D O I：

10.1016/j.synthmet.2010.01.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electroluminescent zinc complex [(2-(2-hydroxyphenyl)benzoxazole)(2-methyl-8-hydoxyquinoline)] zinc [Zn(hpb)mq] has been synthesized. It has been used with a blue emitting zinc complex Zn(hpb)(2), to fabricate stacked organic light emitting diode (OLED). Thickness of layers of these materials has been optimized to achieve white light emission. The maximum luminescence of the device was 8390 Cd/m(2) at 14V. Commission Internationale de l'Eclairage coordinates of the device, with 40 nm thickness of Zn(hpb)(2) and 15 nm thickness of Zn(hpb)mq, were (0.29, 0.38) at 7 V and were well within the white region. A model has been presented for simulating the electroluminescence (EL) spectrum of stacked OLED based on Gaussian disorder model using Monte-Carlo technique. From the model the energetic disorders, highest ocuppied molecular orbital and lowest unoccupied molecular orbital positions of different emissive layers and the excimer layer have been estimated. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：756 / 761

页数：6

共 19 条

[1]

BASSLER H, 1993, PHYS STAT SOL B, V175

[2] Color-stable and efficient stacked white organic light-emitting devices comprising blue fluorescent and orange phosphorescent emissive units [J].

Chen, Ping ;

Xue, Qin ;

Xie, Wenfa ;

Duan, Yu ;

Xie, Guohua ;

Zhao, Yi ;

Hou, Jingying ;

Liu, Shiyong ;

Zhang, Liying ;

Li, Bin .

APPLIED PHYSICS LETTERS, 2008, 93 (15)

[3] Efficient organic electrophosphorescent white-light-emitting device with a triple doped emissive layer [J].

D'Andrade, BW ;

Holmes, RJ ;

Forrest, SR .

ADVANCED MATERIALS, 2004, 16 (07) :624-+

[4] Investigation of the charge transport through disordered organic molecular heterojunctions [J].

Houili, H. ;

Tutis, E. ;

Batistic, I. ;

Zuppiroli, L. .

JOURNAL OF APPLIED PHYSICS, 2006, 100 (03)

[5] White OLEDs based on novel emissive materials such as Zn(HPB)2 and Zn(HPB)q [J].

Jang, Yoon-Ki ;

Kim, Dong-Eun ;

Kim, Won-Sam ;

Kim, Byung-Sang ;

Kwon, Oh-Kwan ;

Lee, Burm-Jong ;

Kwon, Young-Soo .

THIN SOLID FILMS, 2007, 515 (12) :5075-5078

[6] High-efficiency top-emissive white-light-emitting organic electrophosphorescent devices [J].

Kanno, H ;

Sun, Y ;

Forrest, SR .

APPLIED PHYSICS LETTERS, 2005, 86 (26) :1-3

[7] High-efficiency stacked white organic light-emitting diodes [J].

Lee, Tae-Woo ;

Noh, Taeyong ;

Choi, Byoung-Ki ;

Kim, Myeong-Suk ;

Shin, Dong Woo ;

Kido, Junji .

APPLIED PHYSICS LETTERS, 2008, 92 (04)

[8] DIFFUSION AND RELAXATION OF ENERGY IN DISORDERED ORGANIC AND INORGANIC MATERIALS [J].

MOVAGHAR, B ;

GRUNEWALD, M ;

RIES, B ;

BASSLER, H ;

WURTZ, D .

PHYSICAL REVIEW B, 1986, 33 (08) :5545-5554

[9] A NOVEL BLUE-LIGHT-EMITTING MATERIAL PREPARED FROM 2-(O-HYDROXYPHENYL)BENZOXAZOLE [J].

NAKAMURA, N ;

WAKABAYASHI, S ;

MIYAIRI, K ;

FUJII, T .

CHEMISTRY LETTERS, 1994, (09) :1741-1742

[10] Trap Assisted Carrier Recombination in 4-(Dicyanomethylene)-2-methyl-6-(4-dimethylaminostyryl)-4H-pyran Doped Bis[2-(2-hydroxyphenyl)bezoxazolate] Zinc [J].

Rai, Virendra Kumar ;

Srivastava, Ritu ;

Chauhan, Gayatri ;

Saxena, Kanchan ;

Chand, Suresh ;

Kamalasanan, M. N. .

JAPANESE JOURNAL OF APPLIED PHYSICS, 2008, 47 (05) :3408-3411

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