Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification

被引：305

作者：

Madigan, CF ^{[1
]}

Lu, MH ^{[1
]}

Sturm, JC ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Ctr Photon & Optoelect Mat, Princeton, NJ 08544 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 13期

关键词：

D O I：

10.1063/1.126124

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The emission intensity of an organic light-emitting diode at normal viewing angle and the total external emission efficiency have been increased by factors of 9.6 and 3.0, respectively, by applying spherically shaped patterns to the back of the device substrate. The technique captures light previously lost to waveguiding in the substrate and, with proper choice of substrate, light previously lost to waveguiding in the organic/anode layers. A method of applying the technique using laminated films and an optical model for evaluating coupling efficiency are also presented. (C) 2000 American Institute of Physics. [S0003-6951(00)01613-2].

引用

页码：1650 / 1652

页数：3

共 10 条

[1] Weak microcavity effects in organic light-emitting devices [J].

Bulovic, V ;

Khalfin, VB ;

Gu, G ;

Burrows, PE ;

Garbuzov, DZ ;

Forrest, SR .

PHYSICAL REVIEW B, 1998, 58 (07) :3730-3740

[2] PHOTOMETRIC FIGURES OF MERIT FOR SEMICONDUCTOR LUMINESCENT SOURCES OPERATING IN SPONTANEOUS MODE [J].

CARR, WN .

INFRARED PHYSICS, 1966, 6 (01) :1-&

[3] ANGULAR-DEPENDENCE OF THE EMISSION FROM A CONJUGATED POLYMER LIGHT-EMITTING DIODE - IMPLICATIONS FOR EFFICIENCY CALCULATIONS [J].

GREENHAM, NC ;

FRIEND, RH ;

BRADLEY, DDC .

ADVANCED MATERIALS, 1994, 6 (06) :491-494

[4] High-external-quantum-efficiency organic light-emitting devices [J].

Gu, G ;

Garbuzov, DZ ;

Burrows, PE ;

Venkatesh, S ;

Forrest, SR ;

Thompson, ME .

OPTICS LETTERS, 1997, 22 (06) :396-398

[5] THE PLASTIC LED - A FLEXIBLE LIGHT-EMITTING DEVICE USING A POLYANILINE TRANSPARENT ELECTRODE [J].

GUSTAFSSON, G ;

TREACY, GM ;

CAO, Y ;

KLAVETTER, F ;

COLANERI, N ;

HEEGER, AJ .

SYNTHETIC METALS, 1993, 57 (01) :4123-4127

[6]

MAY P, 1996, SID, V27, P192

[7]

OSTERMEYER FW, 1990, APPL PHYS LETT, V56, P2419

[8] Status of and prospects for organic electroluminescence [J].

Rothberg, LJ ;

Lovinger, AJ .

JOURNAL OF MATERIALS RESEARCH, 1996, 11 (12) :3174-3187

[9]

Saleh B. E. A., 2007, FUNDAMENTALS PHOTONI

[10] Efficient organic electroluminescent devices using single-layer doped polymer thin films with bipolar carrier transport abilities [J].

Wu, CC ;

Sturm, JC ;

Tian, J ;

Dana, EP ;

Thompson, ME .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 1997, 44 (08) :1269-1281

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