Dopant emission mechanism and the effects of host materials on the behavior of doped organic light-emitting diodes

被引：25

作者：

Qiu, CF ^{[1
]}

Chen, HY ^{[1
]}

Wong, M ^{[1
]}

Kwok, HS ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Elect & Elect Engn, Ctr Display Res, Kowloon, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON ELECTRON DEVICES | 2002年 / 49卷 / 09期

关键词：

carrier trapping; doping; emission mechanism; lifetime; organic light-emitting diode;

D O I：

10.1109/TED.2002.802620

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Organic light-emitting diodes made of tris-8-(hydroxyquinoline) aluminum as the electron-transport layers, N, N'-diphenyl-N, N' bis (3-methylphenyl)-1, 1'-biphenyl-4, 4'-diamine (TPD) as the hole-transport layers, and 2-(1, 1-dimethylethyl)-6(2-(2, 3, 6, 7-tetrahydro-1, 1, 7, 7-tetramethyl-1H, 5H-benzo(ij) quinolizin-9-yl) ethenyl)-4H-pyran-4-ylidene) propanedinitrile (DCJTB) as the guest dopant have been studied. It is determined that a) emission from guest DCJTB in a host transport material results primarily from separate trapping of holes and electrons, rather than the more commonly proposed Forster transfer mechanism, b) DCJTB is a more efficient hole than electron trap, and c) the lifetime of a doped device is longer when TPD is used as the host material.

引用

页码：1540 / 1544

页数：5

共 22 条

[11] Dependence of the current and power efficiencies of organic light-emitting diode on the thickness of the constituent organic layers [J].

Qiu, CF ;

Chen, HY ;

Wong, M ;

Kwok, HS .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2001, 48 (09) :2131-2137

[12] Excitation dynamics of dye doped tris(8-hydroxy quinoline) aluminum films studied using time-resolved photoelectron spectroscopy [J].

Read, K ;

Karlsson, HS ;

Murnane, MM ;

Kapteyn, HC ;

Haight, R .

JOURNAL OF APPLIED PHYSICS, 2001, 90 (01) :294-300

[13] Significant improvement of device durability in organic light-emitting diodes by doping both hole transport and emitter layers with rubrene molecules [J].

Sakamoto, G ;

Adachi, C ;

Koyama, T ;

Taniguchi, Y ;

Merritt, CD ;

Murata, H ;

Kafafi, ZH .

APPLIED PHYSICS LETTERS, 1999, 75 (06) :766-768

[14] Operation characteristics and degradation of organic electroluminescent devices [J].

Sato, Y ;

Ichinosawa, S ;

Kanai, H .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1998, 4 (01) :40-48

[15] Doped organic electroluminescent devices with improved stability [J].

Shi, JM ;

Tang, CW .

APPLIED PHYSICS LETTERS, 1997, 70 (13) :1665-1667

[16] Electroluminescence color tuning by dye doping in organic light-emitting diodes [J].

Shoustikov, AA ;

You, YJ ;

Thompson, ME .

IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, 1998, 4 (01) :3-13

[17] ELECTROLUMINESCENCE OF DOPED ORGANIC THIN-FILMS [J].

TANG, CW ;

VANSLYKE, SA ;

CHEN, CH .

JOURNAL OF APPLIED PHYSICS, 1989, 65 (09) :3610-3616

[18] ORGANIC ELECTROLUMINESCENT DIODES [J].

TANG, CW ;

VANSLYKE, SA .

APPLIED PHYSICS LETTERS, 1987, 51 (12) :913-915

[19] Efficient organic red electroluminescent device with narrow emission peak [J].

Tao, XT ;

Miyata, S ;

Sasabe, H ;

Zhang, GJ ;

Wada, T ;

Jiang, MH .

APPLIED PHYSICS LETTERS, 2001, 78 (03) :279-281

[20] Organic electroluminescent devices with improved stability [J].

VanSlyke, SA ;

Chen, CH ;

Tang, CW .

APPLIED PHYSICS LETTERS, 1996, 69 (15) :2160-2162

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