Luminous efficiency enhancement in blue phosphorescent organic light-emitting diodes with an electron confinement layers
被引:8
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作者:
Kang, Jin Sung
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机构:
Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South KoreaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Kang, Jin Sung
[1
]
Yoon, Ju-An
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机构:
Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South KoreaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Yoon, Ju-An
[1
]
Yoo, Seung Il
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机构:
Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South KoreaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Yoo, Seung Il
[1
]
Kim, Jin Wook
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机构:
Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South KoreaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Kim, Jin Wook
[1
]
Yi, Seungjun
论文数: 0引用数: 0
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机构:
Korea Univ, Ctr Photovolta Mat, Sejong, South KoreaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Yi, Seungjun
[2
]
Zhu, Furong
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机构:
Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong, Peoples R ChinaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Zhu, Furong
[3
]
Cheah, Kok Wai
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h-index: 0
机构:
Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong, Peoples R ChinaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Cheah, Kok Wai
[3
]
Kim, Woo Young
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机构:
Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
McMaster Univ, Dept Engn Phys, Hamilton, ON, CanadaHoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
Kim, Woo Young
[1
,4
]
机构:
[1] Hoseo Univ, Dept Green Energy & Semicond Engn, Asan, South Korea
[2] Korea Univ, Ctr Photovolta Mat, Sejong, South Korea
[3] Hong Kong Baptist Univ, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[4] McMaster Univ, Dept Engn Phys, Hamilton, ON, Canada
Blue phosphorescent OLED;
Hole confinement layer (HCL);
Electron confinement layer (ECL);
Luminous efficiency;
External quantum efficiency;
QUANTUM-WELL;
EMISSION BEHAVIOR;
DEVICE;
D O I:
10.1016/j.optmat.2015.07.003
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
This study reports the results of blue phosphorescent organic light emitting diodes (PHOLEDs) employing an electron confinement layer (ECL), tris-(phenylpyrazole)iridium (Ir(ppz)(3)) and a hole confinement layer (HCI), 1,3,5-tris(N-phenylbenzimiazole-2-yl)benzene (TABi). The electrical and optical characteristics of PHOLEDs with different emissive layers, including current density, luminance, and luminous efficiency, were analyzed. The thickness of the individual emissive layer was optimized, however, and the total thickness of the emitting region was kept constant at 300 A. This work reveals that the effective electron confinement, due to a large energy level offset between the electron confinement and emitting layers, helps to improve hole-electron current balance in the emitting region. The maximum external quantum efficiency of 23.40% at 1500 cd/m(2) was achieved for PHOLEDs with an ECL, which-is 60% higher than the structural identical control device without ECL. (C) 2015 Elsevier B.V. All rights reserved.
机构:
Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R ChinaSoochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Bian, Chenglin
Wang, Qiang
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机构:
Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R ChinaSoochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Wang, Qiang
Liu, Xiang-Yang
论文数: 0引用数: 0
h-index: 0
机构:
Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R ChinaSoochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Liu, Xiang-Yang
Fan, Jian
论文数: 0引用数: 0
h-index: 0
机构:
Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Jiangsu Ind Technol Res Inst, IOO, Suzhou 215212, Jiangsu, Peoples R ChinaSoochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Fan, Jian
Liao, Liang-Sheng
论文数: 0引用数: 0
h-index: 0
机构:
Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
Jiangsu Ind Technol Res Inst, IOO, Suzhou 215212, Jiangsu, Peoples R ChinaSoochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China
机构:
Ecole Polytech, IPParis, CNRS, LPICM, F-91128 Palaiseau, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
Tondelier, Denis
Geffroy, Bernard
论文数: 0引用数: 0
h-index: 0
机构:
Ecole Polytech, IPParis, CNRS, LPICM, F-91128 Palaiseau, France
Univ Paris Saclay, CEA Saclay, CNRS, LICSEN,NIMBE,CEA, F-91191 Gif Sur Yvette, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
Geffroy, Bernard
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机构:
Heiser, Thomas
Ibraikulov, Olzhas A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Strasbourg, Lab ICube, UMR CNRS 7357, F-67087 Strasbourg, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
Ibraikulov, Olzhas A.
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机构:
Quinton, Cassandre
Brouillac, Clement
论文数: 0引用数: 0
h-index: 0
机构:
Univ Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
Brouillac, Clement
Leclerc, Nicolas
论文数: 0引用数: 0
h-index: 0
机构:
Inst Chim & Proc Energie Environm & Sante ICPEES, UMR CNRS 7515, F-67087 Strasbourg, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
Leclerc, Nicolas
Rault-Berthelot, Joelle
论文数: 0引用数: 0
h-index: 0
机构:
Univ Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, FranceUniv Rennes, CNRS, ISCR UMR CNRS 6226, F-35000 Rennes, France
机构:
Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Kim, Kwon-Hyeon
Lee, Sunghun
论文数: 0引用数: 0
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机构:
Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Lee, Sunghun
Moon, Chang-Ki
论文数: 0引用数: 0
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机构:
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South Korea
Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Moon, Chang-Ki
Kim, Sei-Yong
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机构:
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South Korea
Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Kim, Sei-Yong
Park, Young-Seo
论文数: 0引用数: 0
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机构:
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South Korea
Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Park, Young-Seo
Lee, Jeong-Hwan
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Lee, Jeong-Hwan
Lee, Jin Woo
论文数: 0引用数: 0
h-index: 0
机构:
Samsung Total Petrochem, Dept Catalyst Res, Chungnam 356711, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Lee, Jin Woo
Huh, June
论文数: 0引用数: 0
h-index: 0
机构:
Korea Univ, Dept Chem & Biol Engn, Seoul 136713, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Huh, June
You, Youngmin
论文数: 0引用数: 0
h-index: 0
机构:
Kyung Hee Univ, Dept Adv Mat Engn Informat & Elect, Yongin 446701, Gyeonggi Do, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
You, Youngmin
Kim, Jang-Joo
论文数: 0引用数: 0
h-index: 0
机构:
Seoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea
Seoul Natl Univ, Ctr Organ Light Emitting Diodes, Seoul 151742, South Korea
Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South KoreaSeoul Natl Univ, Dept Mat Sci & Engn, WCU Hybrid Mat Program, Seoul 151742, South Korea