Dr. Changhee Lee Profile

Dr. Changhee Lee

Executive VP at SAMSUNG Display Co Ltd

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 25 August 2020 Open Access

Quantum dots: Making the display brighter and more colorful

Changhee Lee

Proceedings Volume 11473, 1147302 (2020) https://doi.org/10.1117/12.2572172

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Proceedings Article | 8 March 2019 Presentation

Polymer light-emitting diodes with inkjet-printed electrodes for all solution-processed display application (Conference Presentation)

Hyungsoo Yoon, Jongjang Park, Byeongmoon Lee, Changhee Lee, Yongtaek Hong

Proceedings Volume 10942, 109420C (2019) https://doi.org/10.1117/12.2508191

KEYWORDS: Organic light emitting diodes, Electrodes, Silver, Inkjet technology, Printing, Sputter deposition, Optical lithography, Zinc oxide

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Proceedings Article | 8 March 2019 Presentation

ITO-free solution-processed polymer light-emitting diodes with embedded AgNW-transferred PEDOT:PSS (Conference Presentation)

Geonhee Kim, Jongjang Park, Seunghwan Lee, Changhee Lee, Yongtaek Hong

Proceedings Volume 10942, 109420Q (2019) https://doi.org/10.1117/12.2508163

KEYWORDS: Organic light emitting diodes, Electrodes, Surface roughness, Optical lithography, Silver, Nanowires, Lithography, Surface properties, Resistance, Transmittance

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Proceedings Article | 22 September 2015 Paper

Highly enhanced phosphorescent organic light-emitting diodes with cesium fluoride doped electron injection layer

Jongseok Han, Yongwon Kwon, Jiho Sohn, Changhee Lee

Proceedings Volume 9566, 95662E (2015) https://doi.org/10.1117/12.2187588

KEYWORDS: Doping, Organic light emitting diodes, Aluminum, Cesium, Resistance, Electron transport, Thin films, Photoemission spectroscopy, Electroluminescence, X-rays

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Proceedings Article | 6 October 2014 Paper

Nanobump assembly for plasmonic organic solar cells

Hyung-Jun Song, Kinam Jung, Gunhee Lee, Youngjun Ko, Jong-Kwon Lee, Mansoo Choi, Changhee Lee

Proceedings Volume 9184, 91841T (2014) https://doi.org/10.1117/12.2061323

KEYWORDS: Silver, Plasmonics, Organic photovoltaics, Polymers, Refractive index, Solar cells, Light scattering, Scattering, Nanolithography, Nanoparticles

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Proceedings Article | 13 September 2012 Paper

Sol-gel deposited gallium-doped zinc oxide electrode for polymer light-emitting diode applications

Donghyun Kim, Jaeheung Ha, Changhee Lee, Yongtaek Hong

Proceedings Volume 8476, 84761W (2012) https://doi.org/10.1117/12.928910

KEYWORDS: Organic light emitting diodes, Sol-gels, Annealing, Zinc oxide, Electrodes, Resistance, Polymers, Quartz, Hydrogen, Zinc

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Proceedings Article | 13 September 2012 Paper

Solution processed polymer light-emitting diodes with single layer graphene anode

Jaeheung Ha, Subeom Park, Donghyun Kim, Jaechul Ryu, Changhee Lee, Byung Hee Hong, Yongtaek Hong

Proceedings Volume 8476, 84760Y (2012) https://doi.org/10.1117/12.928821

KEYWORDS: Graphene, Organic light emitting diodes, Ultraviolet radiation, Ozone, Raman spectroscopy, Glasses, Electrodes, Chemical vapor deposition, Polymethylmethacrylate, Atomic force microscopy

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Proceedings Article | 2 September 2009 Paper

Tandem white organic light emitting diodes consisting of blue and red phosphorescent unit devices connected with a transparent Al:LiF/MoO3 connecting layer

Jungjin Yang, Chandra Suman, Changhee Lee

Proceedings Volume 7415, 74151X (2009) https://doi.org/10.1117/12.826791

KEYWORDS: Composites, Electroluminescence, Organic light emitting diodes, Doping, Microchannel plates, Oxides, Laser induced fluorescence, Organic semiconductors, Iridium, Luminous efficiency

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Proceedings Article | 27 August 2009 Paper

High efficiency phosphorescent OLEDs based on the heterostructured light emission and charge injection layers

Byung Doo Chin, Yuri Choi, Heume-Il Baek, Changhee Lee

Proceedings Volume 7415, 741510 (2009) https://doi.org/10.1117/12.828952

KEYWORDS: Heterojunctions, Organic light emitting diodes, Excitons, Energy efficiency, Diffusion, Doping, Control systems, Energy transfer, Beryllium, Interfaces

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Proceedings Article | 2 September 2008 Paper

Optimization of white OLEDs based on charge carrier conduction properties of phosphorescent emitting layers

Changhee Lee, Heume-Il Baek, Jeonghun Kwak, Joon Youp Kim, Byung Doo Chin

Proceedings Volume 7051, 70510M (2008) https://doi.org/10.1117/12.800786

KEYWORDS: Organic light emitting diodes, Doping, Electroluminescence, Luminous efficiency, Electron transport, Interfaces, Phosphorescent materials, Calibration, External quantum efficiency, Gold

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Proceedings Article | 16 October 2007 Paper

Improved lifetime and efficiency of green organic light-emitting diodes with a fluorescent dye (C545T)-doped hole transport layer

Hwan-Seok Bang, Jinyoung Yun, Changhee Lee

Proceedings Volume 6655, 66551W (2007) https://doi.org/10.1117/12.735096

KEYWORDS: Doping, Electroluminescence, Organic light emitting diodes, Quantum efficiency, Electrons, Luminous efficiency, Aluminum, Excitons, Electron transport, Molecules

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Proceedings Article | 5 December 2006 Paper

Role of carrier mobility, exciton diffusion, and their interplay for charge balance and improved properties of organic electrophosphorescent device

Byung Doo Chin, Soo-Hyeong Lee, Jai Kyeong Kim, Chang Hee Lee

Proceedings Volume 6333, 633315 (2006) https://doi.org/10.1117/12.680411

KEYWORDS: Excitons, Doping, Organic light emitting diodes, Interfaces, Diffusion, Glasses, Molecules, Physics, Electron transport, Aluminum

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Proceedings Article | 5 December 2006 Paper

Enhancement of the OLED driving stability by introducing an LiF-mixed α-NPD hole-transport layer

Heume-Il Baek, Hyun-Ku Lee, Changhee Lee

Proceedings Volume 6333, 63331B (2006) https://doi.org/10.1117/12.678885

KEYWORDS: Organic light emitting diodes, Laser induced fluorescence, Electroluminescence, Quantum efficiency, Aluminum, Glasses, External quantum efficiency, Temperature metrology, Light sources and illumination, LCDs

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Proceedings Article | 3 November 2006 Paper

Correlation between the temperature dependences of short-circuit current and carrier mobility in P3HT:PCBM blend solar cells

Seung-Uk Noh, Ji-Young Kim, Changhee Lee, Moon-Jae Lee, Byung-Jun Jung, Do-Hoon Hwang, Soo-Hyoung Lee, Hyunjung Kim

Proceedings Volume 6334, 63340S (2006) https://doi.org/10.1117/12.678890

KEYWORDS: Solar cells, Annealing, Polymers, Temperature metrology, Heterojunctions, Photovoltaics, Organic photovoltaics, Interfaces, Coating, Polymer thin films

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Proceedings Article | 25 August 2006 Paper

Ambipolar pentacene field-effect transistor with double-layer organic insulator

Jeong-Hun Kwak, Heume-Il Baek, Changhee Lee

Proceedings Volume 6336, 63361C (2006) https://doi.org/10.1117/12.678889

KEYWORDS: Polymethylmethacrylate, Transistors, Dielectrics, Field effect transistors, Gold, Glasses, Interfaces, Capacitance, Electrodes, Crystals

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Proceedings Article | 10 October 2005 Paper

Improved electroluminescence efficiency of organic light-emitting diodes by using molecularly doped hole-transport layer

C. Lee, Y. Shin, D. Kwon, H. Lee

Proceedings Volume 5937, 593719 (2005) https://doi.org/10.1117/12.627072

KEYWORDS: Electroluminescence, Doping, Organic light emitting diodes, Electrons, Luminous efficiency, Electrodes, Quantum efficiency, Organic materials, Glasses, Aluminum

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Proceedings Article | 4 October 2005 Paper

Enhanced efficiency of polymer:fullerene bulk heterojunction solar cells with the insertion of thin pyronin B layer near the Al electrode

J. Y. Kim, Y. C. Shin, K. M. Park, C. H. Lee

Proceedings Volume 5938, 59381I (2005) https://doi.org/10.1117/12.620957

KEYWORDS: Solar cells, Polymers, Laser induced fluorescence, Electrodes, Aluminum, Organic photovoltaics, Heterojunctions, Polymer thin films, Absorption, Electrons

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Proceedings Article | 20 October 2004 Paper

White organic light-emitting diodes with high efficiency and stable color coordinates

Chang Hee Lee, Nam Heon Lee, Jun-Ho Song, Do Hoon Hwang

Proceedings Volume 5530, (2004) https://doi.org/10.1117/12.565386

KEYWORDS: Electroluminescence, Organic light emitting diodes, Energy transfer, Luminous efficiency, Aluminum, Quantum efficiency, External quantum efficiency, Solid state lighting, Molecules, Doping

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Proceedings Article | 3 March 2003 Paper

Efficient blue electroluminescence from 9,10-diphenylanthracene

Gi-Wook Kang, Young-Joo Ahn, Dae Park, Changhee Lee

Proceedings Volume 4800, (2003) https://doi.org/10.1117/12.451858

KEYWORDS: Electroluminescence, Quantum efficiency, Luminous efficiency, Thin films, Aluminum, Solids, Molecules, Luminescence, Absorption, Telescopic pixel displays

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Proceedings Article | 2 February 2001 Paper

Electroluminescence of bilayer light-emitting diodes of poly(vinylcarbazole) and vacuum-deposited poly(p-phenylene) thin films

Giwook Kang, Changhee Lee, Won-Jun Song, Chang Seoul

Proceedings Volume 4105, (2001) https://doi.org/10.1117/12.416917

KEYWORDS: Electroluminescence, Thin films, Organic light emitting diodes, Quantum efficiency, Interfaces, Temperature metrology, Luminescence, Absorption, Polymers, Aluminum

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Proceedings Article | 17 April 1998 Paper

Preparation of light-emitting devices with poly(p-phenylenevinylene): effects of thermal elimination conditions and polymer layer thickness on device performance

Chang Seoul, Jai Kang, Souk Mah, Changhee Lee

Proceedings Volume 3281, (1998) https://doi.org/10.1117/12.305419

KEYWORDS: Polymers, Heat treatments, Light emitting diodes, Thermal effects, Organic light emitting diodes, Electroluminescence, Quantum efficiency, Polymer thin films, Nitrogen, External quantum efficiency

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