Improved out-coupling efficiency from a green microcavity OLED with a narrow band emission source

被引：32
作者：
Fleetham, Tyler [1 ]
Ecton, Jeremy [1 ]
Li, Guijie [1 ]
Li, Jian [1 ]
机构：
[1] Arizona State Univ, Dept Mat Sci & Engn, Tempe, AZ 85284 USA
来源：
ORGANIC ELECTRONICS | 2016年 / 37卷
基金：
美国国家科学基金会;
关键词：
Microcavity; Platinum complexes; Light extraction; Narrow spectral emission band; LIGHT-EMITTING-DIODES; EXTERNAL QUANTUM EFFICIENCY; EXTRACTION EFFICIENCY; TRANSPORT MATERIALS; PLATINUM COMPLEXES; DEVICES; FLUORESCENT; LUMINESCENCE; TETRADENTATE; ENHANCEMENT;
D O I：
10.1016/j.orgel.2016.05.041
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A highly efficient green microcavity organic light emitting diode was developed using a tetradentate cyclometalated platinum complex, PtN1N, with an intrinsically narrow emission spectral band (FWHM = 18 nm). Devices employing the narrow band emitter in MOLEDs consisting of a single pair of a high index dielectric, Ta2O5, and low index dielectric, SiO2, exhibited a high peak external quantum efficiency of 33.7% compared to a standard OLED in the same device architecture with a peak external quantum efficiency of 25.6%. We have also found in our study that narrow band emission sources in tuned microcavity OLEDs exhibit larger enhancements in light out-coupling efficiency accompanied by small changes in color with respect to viewing angle compared to broad band emitters which is advantageous in display applications. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：141 / 147
页数：7
相关论文
共 76 条
[41]   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
[42]   Quantification of energy loss mechanisms in organic light-emitting diodes [J].
Meerheim, Rico ;
Furno, Mauro ;
Hofmann, Simone ;
Luessem, Bjoern ;
Leo, Karl .
APPLIED PHYSICS LETTERS, 2010, 97 (25)
[43]   High-efficiency monochrome organic light emitting diodes employing enhanced microcavities [J].
Meerheim, Rico ;
Nitsche, Robert ;
Leo, Karl .
APPLIED PHYSICS LETTERS, 2008, 93 (04)
[44]  
Mikami A., 2009, SID Symposium Digest of Technical Papers, V40, P907
[45]   Exceptionally efficient organic light emitting devices using high refractive index substrates [J].
Mladenovski, Saso ;
Neyts, Kristiaan ;
Pavicic, Domagoj ;
Werner, Ansgar ;
Rothe, Carsten .
OPTICS EXPRESS, 2009, 17 (09) :7562-7570
[46]   Improved light out-coupling in organic light emitting diodes employing ordered microlens arrays [J].
Möller, S ;
Forrest, SR .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (05) :3324-3327
[47]   Light extraction and optical loss mechanisms in organic light-emitting diodes: Influence of the emitter quantum efficiency [J].
Nowy, Stefan ;
Krummacher, Benjamin C. ;
Frischeisen, Joerg ;
Reinke, Nils A. ;
Bruetting, Wolfgang .
JOURNAL OF APPLIED PHYSICS, 2008, 104 (12)
[48]   High-Efficiency, Solution-Processed, Multilayer Phosphorescent Organic Light-Emitting Diodes with a Copper Thiocyanate Hole-Injection/Hole-Transport Layer [J].
Perumal, Ajay ;
Faber, Hendrik ;
Yaacobi-Gross, Nir ;
Pattanasattayavong, Pichaya ;
Burgess, Claire ;
Jha, Shrawan ;
McLachlan, Martyn A. ;
Stavrinou, Paul N. ;
Anthopoulos, Thomas D. ;
Bradley, Donal D. C. .
ADVANCED MATERIALS, 2015, 27 (01) :93-100
[49]   High extraction efficiency, laterally injected, light emitting diodes combining microcavities and photonic crystals [J].
Rattier, M ;
Krauss, TF ;
Carlin, JF ;
Stanley, R ;
Oesterle, U ;
Houdré, R ;
Smith, CJM ;
De La Rue, RM ;
Benisty, H ;
Weisbuch, C .
OPTICAL AND QUANTUM ELECTRONICS, 2002, 34 (1-3) :79-89
[50]   White organic light-emitting diodes with fluorescent tube efficiency [J].
Reineke, Sebastian ;
Lindner, Frank ;
Schwartz, Gregor ;
Seidler, Nico ;
Walzer, Karsten ;
Luessem, Bjoern ;
Leo, Karl .
NATURE, 2009, 459 (7244) :234-U116
12345678