Enhancement of optical extraction from OLEDs using scattering layers

被引:1
作者
Oulton, RF [1 ]
Adjiman, CS [1 ]
Handa, K [1 ]
Aramaki, S [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Dept Chem Engn, Ctr Proc Syst Engn, London SW7 2AZ, England
来源
Organic Photonic Materials and Devices VII | 2005年 / 5724卷
关键词
organic LEDs; extraction efficiency; low refractive index; scattering;
D O I
10.1117/12.595274
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
We present an enhancement scheme for optical extraction from Organic based LEDs (OLEDs). Enhancement layers, developed by Mitsubishi Chemical Corporation, facilitate the engineering of scattering near an OLED's emitter. An approximate scattering model based on rigorous optical field calculations of the OLED structure is described and optimised. Experimental and numerical results indicate that tip to 2-fold efficiency enhancements are achievable across a broad spectral range.
引用
收藏
页码:191 / 201
页数:11
相关论文
共 19 条
[1]   Determination of guided and leaky modes in lossless and lossy planar multilayer optical waveguides: Reflection pole method and wavevector density method [J].
Anemogiannis, E ;
Glytsis, EN ;
Gaylord, TK .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 1999, 17 (05) :929-941
[2]   EFFICIENT SOLUTION OF EIGENVALUE EQUATIONS OF OPTICAL WAVE-GUIDING STRUCTURES [J].
ANEMOGIANNIS, E ;
GLYTSIS, EN ;
GAYLORD, TK .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 1994, 12 (12) :2080-2084
[3]   Impact of planar microcavity effects on light extraction - Part I: Basic concepts and analytical trends [J].
Benisty, H ;
De Neve, H ;
Weisbuch, C .
IEEE JOURNAL OF QUANTUM ELECTRONICS, 1998, 34 (09) :1612-1631
[4]   Method of source terms for dipole emission modification in modes of arbitrary planar structures [J].
Benisty, H ;
Stanley, R ;
Mayer, M .
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 1998, 15 (05) :1192-1201
[5]   Extraordinary transmission of organic photoluminescence through an otherwise opaque metal layer via surface plasmon cross coupling [J].
Gifford, DK ;
Hall, DG .
APPLIED PHYSICS LETTERS, 2002, 80 (20) :3679-3681
[6]  
JORDAN RH, 1996, APPL PHYS LETT, V69, P3738
[7]   A high-extraction-efficiency nanopatterned organic light-emitting diode [J].
Lee, YJ ;
Kim, SH ;
Huh, J ;
Kim, GH ;
Lee, YH ;
Cho, SH ;
Kim, YC ;
Do, YR .
APPLIED PHYSICS LETTERS, 2003, 82 (21) :3779-3781
[8]   STRUCTURAL RESONANCES IN A DIELECTRIC SPHERE ILLUMINATED BY AN EVANESCENT-WAVE [J].
LIU, C ;
KAISER, T ;
LANGE, S ;
SCHWEIGER, G .
OPTICS COMMUNICATIONS, 1995, 117 (5-6) :521-531
[9]   External coupling efficiency in planar organic light-emitting devices [J].
Lu, MH ;
Sturm, JC .
APPLIED PHYSICS LETTERS, 2001, 78 (13) :1927-1929
[10]   Improvement of output coupling efficiency of organic light-emitting diodes by backside substrate modification [J].
Madigan, CF ;
Lu, MH ;
Sturm, JC .
APPLIED PHYSICS LETTERS, 2000, 76 (13) :1650-1652