The mechanism of efficiency enhancement with proper thickness of DPVBi layer for blue organic light-emitting devices (BOLED)

被引：19

作者：

Huang, Chien-Jung ^{[1
]}

Meen, Teen-Hang ^{[2
]}

Liao, Kuo-Chien ^{[3
]}

Su, Yan-Kuin ^{[3
,4
,5
]}

机构：

[1] Natl Univ Kaohsiung, Dept Appl Phys, Kaohsiung 811, Taiwan

[2] Natl Formosa Univ, Dept Elect Engn, Huwei 632, Yunlin, Taiwan

[3] Natl Sun Yat Sen Univ, Inst Electroopt Engn, Kaohsiung 804, Taiwan

[4] Natl Cheng Kung Univ, Inst Microelect, Tainan 701, Taiwan

[5] Natl Cheng Kung Univ, Dept Elect Engn, Tainan 701, Taiwan

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2009年 / 70卷 / 3-4期

关键词：

Thin film; Luminescence; ELECTROLUMINESCENT DEVICES; RECOMBINATION; INTERFACE; DIODES;

D O I：

10.1016/j.jpcs.2009.03.010

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the fabrication of blue organic light-emitting devices (BOLEDs) with structure: ITO/NPB/DPVBi/Alq(3)/LiF/Al. The hole-blocking effect in NPB/DPVBi interface was indirectly demonstrated and deduced by inserting DCJTB layer. In addition, the effect of the device with better J-V characteristics because of the extra DCJTB layer is discussed as well. However, the performance of devices was investigated with various thicknesses of DPVBi layer. The result shows that the device with proper thickness of DPVBi layer generating better electron injection enhances efficiency and luminance for BOLED. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：765 / 768

页数：4

共 14 条

[1] Effect of a thin layer of tris (8-hydroxyquinoline) aluminum doped with 4-(dicyanomethylene)-2-t-butyl-6-(1,1,7,7-tetramethyljulolidyl-9-enyl) on the chromaticity of white organic light-emitting devices [J].

Cheng, G ;

Zhao, Y ;

Li, F ;

Xie, WF ;

Liu, SY .

THIN SOLID FILMS, 2004, 467 (1-2) :231-233

[2] The interface analyses of inorganic layer for organic electroluminescent devices [J].

Deng, ZB ;

Ding, XM ;

Liao, LS ;

Hou, XY ;

Lee, ST .

DISPLAYS, 2000, 21 (2-3) :79-82

[3] Characterization of blue-light-emitting organic electroluminescent devices [J].

Haskal, EI .

SYNTHETIC METALS, 1997, 91 (1-3) :187-190

[4] Increased electrophosphorescent efficiency in organic light emitting diodes by using an exciton-collecting structure [J].

Qin, DS ;

Tao, Y .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (04)

[5] Organic light-emitting diodes with improved hole-electron balance by using copper phthalocyanine/aromatic diamine multiple quantum wells [J].

Qiu, Y ;

Gao, YD ;

Wei, P ;

Wang, LD .

APPLIED PHYSICS LETTERS, 2002, 80 (15) :2628-2630

[6] Charge carrier injection and transport in polymer blend films [J].

Quan, SY ;

Teng, F ;

Wang, DD ;

Liu, DA ;

Xu, Z ;

Wang, YS ;

Xu, XR .

SOLID STATE COMMUNICATIONS, 2005, 134 (04) :291-294

[7] Luminance enhancement of hole-blocking organic light-emitting devices with an inter-layer structure [J].

Tsou, CC ;

Lu, HT ;

Yokoyama, M .

JOURNAL OF CRYSTAL GROWTH, 2006, 289 (01) :168-171

[8] The dielectric constant of materials effect the property of the OLED [J].

Wang, Fangcong ;

Liu, Su ;

Zhang, Chunlin .

MICROELECTRONICS JOURNAL, 2007, 38 (02) :259-261

[9] High-efficiency red electroluminescence from a narrow recombination zone confined by an organic double heterostructure [J].

Xie, ZY ;

Hung, LS ;

Lee, ST .

APPLIED PHYSICS LETTERS, 2001, 79 (07) :1048-1050

[10] Efficient white organic light-emitting devices using 4,7-diphenyl-1,10-phenanthroline as block layer [J].

Yang, Huishan ;

Shi, Yanwei ;

Zhao, Yi ;

Hou, Jingying ;

Liu, Shiyong .

JOURNAL OF LUMINESCENCE, 2007, 127 (02) :367-370

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