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Showing results 1 to 60 of 97

Issue Date	Title / Author(s) / Citation	File
1991-10	Transient Photoinduced Conductivity in Single-Crystals of YBa2Cu3O7-d: Photodoping to the Metallic State Yu, G.; Lee, Changhee; Heeger, A. J.; Herron, N.; McCarron, E. M. Phys. Rev. Lett. 67, 2581	view file DOI
1992	Photo-excitation of Single-Crystals of La2CuO4+d Near the Metal-Insulator-Transition Yu, G.; Lee, Changhee; Heeger, A. J.; Cheong, S. W.; Fisk, Z. Physica C 190 (1992) 563	DOI
1993	Electronic-Structure of Insulating YBa2Cu3O6+x: From Mott-Hubbard Insulator to Fermi Glass via Oxygen Doping Yu, G.; Lee, Changhee; Mihailovic, D.; Fincher, C.; Herron, N.; Mccarron, E. M.; Heeger, A. J. J. Phys. Chem. Solids 54 (1993) 1161	DOI
1993-09	Photoconductivity in Insulating YBa2Cu3O6+x: From Mott-Hubbard Insulator to Fermi Glass via Oxygen Doping Yu, G.; Lee, Changhee; Mihailovic, D.; Heeger, A. J.; Fincher, C.; Herron, N.; McCarron, E. M. Phys. Rev. B 48, 7545	view file DOI
1993-10	Ultrafast Photoinduced Electron-Transfer in Conducting Polymer Buckminsterfullerene Composites Kraabel, B.; Lee, Changhee; Mcbranch, D.; Moses, D.; Sariciftci, N. S.; Heeger, A. J. Chemi. Phys. Lett. 213 (1993) 389	DOI
1994	Transient Photoconductivity of MEH-PPV and Its Sensitization by C60 Lee, Changhee; Yu, G.; Moses, D.; Sariciftci, N. S.; Wudl, F.; Heeger, A. J. Mol. Crys.Liq.Crys.256, 745	DOI
1994	The Effect of Oxygen on the Photoconductivity of C60 Film: Action Spectrum and Temperature-Dependence Lee, Changhee; Yu, G.; Pakbaz, K.; Moses, D.; Srdanov, V. I. Mol. Cryst. Liq. Cryst. 256, 769	DOI
1994	Nonlinear Transient Photovoltaic Response in Al/C60/Au Devices: Control of Polarity with Optical Bias Lee, Changhee; Yu, G.; Moses, D.; Heeger, A. J.; Srdanov, V. I. Appl. Phys. Lett. 65, 664	view file
1994-01	Picosecond Transient Photoconductivity in Poly(P-Phenylenevinylene) Lee, Changhee; Yu, G.; Moses, D.; Heeger, A. J. Phys. Rev. B 49, 2396	view file DOI
1994-04	Effects of Oxygen on the Photocarrier Dynamics in a C60 Film: Studies of Transient and Steady-State Photoconductivity Lee, Changhee; Yu, G.; Kraabel, B.; Moses, D.; Srdanov, V. I. Phys. Rev. B 49, 10572	view file DOI
1994-10	Absence of Photoinduced Electron-Transfer from the Excitonic Electron-Hole Bound-State in Polydiacetylene Conjugated Polymers Sariciftci, N. S.; Kraabel, B.; Lee, Changhee; Pakbaz, K.; Heeger, A. J.; Sandman, D. J. Phys. Rev. B 50, 12044	view file DOI
1995	Spectral and Photocarrier Dynamics in Thin-Films of Pristine and Alkali-Doped C60 Srdanov, V. I.; Lee, Changhee; Sariciftci, N. S. Thin Solid Films, 257 (1995) 233	DOI
1995	Dynamics of Photoexcited Carriers in Poly(P-Phenylenevinylene) and Its Soluble Derivative Lee, Changhee; Yu, G.; Moses, D.; Heeger, A. J. Synth. Met. 69 (1995) 429	DOI
1995	Picosecond Transient Photoconductivity in a Soluble Derivative of Poly(p-phenylene vinylene) Lee, Changhee; Yu, G.; Sariciftci, N. S.; Heeger, A. J.; Zhang, C. Synth. Met. 75 (1995) 127	DOI
1995	Large Enhancement of the Transient and Steady-State Photoconductivity of Conducting Polymer C60 Composite Films Lee, Changhee; Yu, G.; Pakbaz, K.; Moses, D.; Sariciftci, N. S.; Wudl, F.; Heeger, A. J. Synth. Met. 70 (1995) 1353	DOI
1995	Dynamics of Photoexcited Carriers in Pristine Oxygen-Free C60 Films: Study of the Time-Resolved Transient Photoconductivity Lee, Changhee; Yu, G.; Moses, D.; Srdanov, V. I. Synth. Met.70 (1995) 1413	DOI
1995	Photocarrier Dynamics in C60: Studies of Transient Photoconductivity and Transient Photoinduced Absorption Moses, D.; Lee, Changhee; Kraabel, B.; Yu, G.; Srdanov, V. I. Synth. Met. 70 (1995) 1419	DOI
1996-08	Mechanism of Carrier Generation in Poly(phenylene vinylene): Transient Photoconductivity and Photoluminescence at High Electric Fields Moses, D.; Okumoto, H.; Lee, Changhee; Heeger, A. J.; Ohnishi, T.; Noguchi, T. Phys. Rev. B 54, 4748	view file DOI
1997	Mechanism of Carrier Generation in Conducting Polymers Moses, D.; Okumoto, H.; Comoretto, D.; Lee, Changhee; Heeger, A. J.; Ohnishi, T.; Noguchi, T. Synth. Met. 84, 539	DOI
1997	Fast Transient "Photoconductivity" in Semiconducting Polymers: Free Carrier Photocurrent or Displacement Current Generated by Electric-Field-Induced Polarization of Bound Excitons? Moses, D.; Cormoretto, D.; Lee, Changhee; Heeger, A. J. Synth. Met.84 (1997) 559	DOI
1997	Enhanced Efficiency and Durability of Organic Electroluminescent Devices by Inserting a Thin Insulating Layer at the Alq3/Cathode Interface Lee, Changhee Synth. Met. 91 (1997) 125	DOI
1998-06	Doping effect of Viologen on Photoconductive Device made of Poly(p-phenylene vinylene) Park, J. Y.; Lee, S. B.; Park, Y. S.; Park, Y. W.; Lee, Changhee; Lee, J. I.; Shim, H. K. Appl. Phys. Lett. 72, 2871	view file DOI
1999	Temperature Dependence of Electro- and Photo-Luminescence of a Silyl-Disubstituted PPV Derivative Lee, Changhee; Park, Joon-Young; Park, Yung-Woo; Ahn, Young-Hwan; Kim, Dae-Sik; Hwang, Do-Hoon; Zyung, Tae-Hyung Journal of the Korean Physical Society 1999;35:S291-S294	view file DOI
1999	Amplified Spontaneous Emission from an MEH-PPV Film in Cylindrical Geometry Park, J. Y.; Srdanov, V. I.; Heeger, A. J.; Lee, Changhee; Park, Y. W. Synth. Met. 106 (1999) 35	DOI
1999	Polarization Dependence of the Photoconductivity of Stretch-Oriented Poly(p-phenylenevinylene) Films Lee, Changhee; Park, J. Y.; Park, Y. W.; Moses, D.; Heeger, A. J.; Ohnishi, T.; Noguchi, T. Synth. Met. 101 (1999) 444	DOI
1999-01	Preparation of Light-Emitting Devices with Poly(p-Phenylenevinylene): Effects of Thermal Elimination Conditions and Polymer Layer Thickness on Device Performance Seoul, Chang; Kang, Jae Ick; Mah, Souk Il; Lee, Changhee Synth. Met. 99 (1999) 35	DOI
1999-05	Ultrafast Photoluminescence of a highly luminescent PPV derivative Ahn, Y. H.; Kim, D. S.; Park, J. Y.; Park, Y. W.; Lee, Changhee; Hwang, D. H.; Zyung, T. Synth. Met.101 (1999) 242	DOI
2000	Blue Electroluminescence and Dynamics of Charge Carrier Recombination in a Vacuum-Deposited poly(p-phenylene) Thin Film Lee, Changhee; Kang, G. W.; Jeon, J. W.; Song, W. J.; Seoul, Chang Thin Solid Films 363 (2000) 306	DOI
2000	Organic Light-Emitting Devices Based on Vacuum-Deposited Poly(p-Phenylene) Thin Film Song, Won-Jun; Seoul, Chang; Kang, Gi-Wook; Lee, Changhee Synth. Met. 114 (2000) 355	DOI
2000-06	Transient Electroluminescence in the Light-Emitting Diodes of Poly(p-phenylene) Thin Film Kang, G. W.; Lee, Changhee; Song, W. J.; Seoul, C. J. Korean Phys. Soc. 36, 351	view file DOI
2001	Photoluminescence and Electroluminescence of Vacuum-Deposited poly(p-phenylene) Thin Film Lee, Changhee; Kang, G. W.; Jeon, J. W.; Song, W. J.; Kim, S. Y.; Seoul, C. Synth. Met. 117 (2001) 75	DOI
2001	Photoluminescence and electroluminescence of liquid crystalline aromatic conjugated polymers Park, J. H.; Lee, Changhee; Akagi, K.; Shirakawa, H.; Park, Y. W. Synth. Met. 119 (2001) 633	DOI
2002	White light emitting devices based on organic multilayer structure Lim, J. T.; Ahn, Y. J.; Kang, G. W.; Lee, Changhee Curr. Appl. Phys. 2 (2002) 295	DOI
2002	Effect of molar mass on electroluminescence of poly(p-phenylene) Seoul, Chang; Song, Won-Jun; Kang, Gi-Wook; Lee, Changhee Synth. Met. 130 (2002) 9	DOI
2002	Control of resonant wavelength from organic light-emitting materials by use of a Fabry-Perot microcavity structure Jung, Boo Young; Kim, Nam Young; Lee, Changhee; Hwangbo, Chang Kwon; Seoul, Chang Appl. Opt. 41, 3312-3318	DOI
2002-06	Photovoltaic properties of multilayer heterojunction organic solar cells Ahn, Y. J.; Kang, G. W.; Lee, Changhee Mol. Cryst. Liq. Cryst. 377, 301	DOI
2003	Efficient white organic light emission by single emitting layer Ko, Young Wook; Chung, Choong-Heui; Lee, Jin Ho; Kim, Yong-Hae; Sohn, Choong-Yong; Kim, Bong-Chul; Hwang, Chi-Sun; Song, Yoon-Ho; Lim, Jongtae; Ahn, Young-Joo; Kang, Gi-Wook; Lee, Namheon; Lee, Changhee Thin Solid Films 426 (2003) 246	DOI
2003	Syntheses and Light-Emitting Properties of Poly(9,9-di-n-octylfluorenyl- 2,7-vinylene) and PPV Copolymers Hwang, Do-Hoon; Lee, Jong-Don; Kang, Jong-Min; Lee, Sangphil; Lee, Changhee; Jin, Sung-Ho J. Mater. Chem., 2003, 13, 1540	view file DOI
2003	White Electroluminescent Devices Using Polymer Blends Hwang, Do-Hoon; Lee, Ji-Hoon; Lee, Jeong-Ik; Lee, Changhee; Kim, Yong-Bae Mol. Cryst. Liq. Cryst., 405, 127	DOI
2003	Photovoltaic properties of polymer-based solar cells Ahn, Y. J.; Kang, G. W.; Lee, Changhee; Yeom, I. S.; Jin, S. H. Synth. Met. 137 (2003) 1447	DOI
2003-03	Efficient white-light-emitting organic electroluminescent devices Kang, G. W.; Ahn, Y. J.; Lim, J. T.; Lee, Changhee Synth. Met. 137 (2003) 1029	DOI
2004	Efficient White Organic Electroluminescent Devices Consisting of Blue and Red Emitting Layers Lee, Nam-Heon; Lee, Mun-Jae; Song, Jun-Ho; Lee, Changhee; Hwang, Do-Hoon Mat. Sci. Eng. : C 24 (2004) 233	DOI
2004	Efficient white light emitting devices with a blue emitting layer doped with a red dye Lim, J. T.; Lee, M. J.; Lee, N. H.; Ahn, Y. J.; Lee, Changhee; Hwang, D. H. Current Appl. Phys. 4 (2004) 327	DOI
2004	Comparison of the electroluminescence of a red fluorescent dye doped into the Alq3 and Alq3:Rubrene Mixed Host Kang, Hee-Young; Kang, Gi-Wook; Park, Kyung-Min; Yoo, In-Sun; Lee, Changhee Mat. Sci. Eng.: C 24 (2004) 229	DOI
2004	Electroluminescence properties of organic light-emitting diodes with a red dye doped into Alq3:rubrene mixed Host Kang, Hee-Young; Lee, Changhee J. Korean Phys. Soc. 45, 756	view file DOI
2004	Synthesis and Light-Emitting Properties of Polyfluorene Copolymers Containing a Hydrazone Derivative as a Comonomer Hwang, Do-Hoon; Park, Moo-Jin; Lee, Ji-Hoon; Cho, Nam-Sung; Shim, Hong-Ku; Lee, Changhee Synth. Met. 146 (2004) 145	DOI
2004	Light-Emitting Properties of Fluorene Based Copolymers Hwang, Do-Hoon; Lee, Jong-Don; Park, Moo-Jin; Lee, Ji-Hoon; Lee, Changhee Journal of Nonlinear Optical Physics and Materials 2004;13:637-642	DOI
2004-03	Improved blue light-emitting polymeric device by the tuning of drift mobility and charge balance Chin, Byung Doo; Suh, Min Chul; Lee, Seong Taek; Chung, Ho Kyoon; Lee, Changhee Appl. Phys. Lett. 84, 1777	view file DOI
2004-07	Characterization of White Electroluminescent Devices Fabricated Using Conjugated Polymer Blends Hwang, Do-Hoon; Park, Moo-Jin; Kim, Suk-Kyung; Lee, Nam-Heon; Lee, Changhee; Kim, Yong-Bae; Shim, Hong-Ku J. Mater. Res. 19, 2081	view file DOI
2005	The photovoltaic effect of the p-n heterojunction organic photovoltaic device using a nano template method Oh, Seung-Won; Rhee, Hee Woo; Lee, Changhee; Kim, Jai Kyeong; Kim, Young Chul; Yu, Jae-Woong Curr. Appl. Phys. 5 (2005) 55	DOI
2005	The effect of a buffer layer on the photovoltaic properties of solar cells with P3OT:fullerene composites Yoo, Insun; Lee, Munjae; Lee, Changhee; Kim, Dae-Won; Moon, In Sik; Hwang, Do-Hoon Synth. Met. 153 (2005) 97	DOI
2005	Organic light-emitting diode using a new DCM derivative as an efficient orange-red doping molecule Hwang, Do-Hoon; Lee, Jong-Don; Lee, Moon-Jae; Lee, Changhee Curr. Appl. Phys. 5 (2005) 244	DOI
2005	Mobility of Electrons and Holes in an n-type Organic Semiconductor Perylene Diimide Thin Film Kim, Jung Yong; Chung, In Jae; Lee, Changhee; Kim, Young Chul; Kim, Jai Kyeong; Yu, Jae-Woong Curr. Appl. Phys. 5 (2005) 615	DOI
2005	All Solution processed N-type organic transistor using a spinning metal process Lee, Tae-Woo; Byun, Younghun; Koo, Bon-Won; Kang, In-Nam; Lyu, Yi-Yeol; Lee, Changhee; Pu, Lyoungsun; Lee, Sang Yun Adv. Mater. 2005, 17, 2180	DOI
2005	White LEDs using conjugated polymer blends Hwang, Do-Hoon; Park, Moo-Jin; Lee, Changhee Synth. Met. 152 (2005) 205	DOI
2005-05	The Electrical Characteristics of Pentacene-Based Organic Field-effect Transistors with Polymer Gate Insulators Kang, G. W.; Park, K. M.; Song, J. H.; Lee, Changhee; Hwang, D. H. Curr. Appl. Phys. 5 (2005) 297	DOI
2006	Poly(arylenevinylene) Blends for White Light-Emitting Diodes Kang, Jong-Min; Park, Moo-Jin; Kim, Suk-Kyung; Lee, Changhee; Jin, Sung-Ho; Hwang, Do-Hoon Curr. Appl. Phys. 6 (2006) 756	DOI
2006-01	Effect of Charge Mobility for Organic Photovoltaic Devices Jang, Bum Jin; Kim, Jung Yong; Kim, Jai Kyeong; Yu, Jae-Woong; Lee, Changhee Mol. Cryst. Liq. Cryst., 444, 67	DOI
2007	Confinement of Charge Carriers and Excitons in the Electrophosphorescent Devices: Mechanism of Light Emission and Degradation Chin, Byung Doo; Lee, Changhee Adv. Mater. 2007, 19, 2061	DOI
2007	Structural origin of the mobility enhancement in a pentacene thin-film transistor with a photo-crosslinking insulator Bae, Jin-Hyuk; Kim, Won-Ho; Kim, Hyeok; Lee, Changhee; Lee, Sin-Doo J. Appl. Phys. 102, 063508	view file DOI

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