"W. H. Koo,F. Araoka,K. Ishikawa,S. M. Jeong,S. Nishimura,T. Toyooka,H. Takezoe","Simultaneous extraction of ITO/organic and substrate waveguide modes from buckled organic light emitting diodes",,"Appl. Phys. Express",,"Vol. 4",,"  032101-1-3",2011,Sept.
"Suzushi Nishimura,W. H. Koo,S. Y. Boo,S. M. Jeong,F. Araoka,K. Ishikawa,T. Toyooka,H. Takezoe","Controlling bucking structure by UV/ozone treatment for light extraction from organic light emitting diodes",,"Organic Electronics: physics, materials, applications",,"Vol. 12","No. 7","pp. 1177-1183",2011,Sept.
"W. H. Koo,S. M. Jeong,S. Nishimura,F. Araoka,K. Ishikawa,T. Toyooka,H. Takezoe","Polarization conversion in surface-plasmon-coupled emission from organic light emitting diodes using spontaneously formed buckles",,"Adv. Mater.",,"Vol. 23",,"  1003-1007",2011,Mar.
"HIDEO TAKEZOE,WONHOE KOO,Hongje Yun,Fumito Araoka,Ken Ishikawa,Soon Moon Jeong,T. TOYOOKA,S Nishimura","Spontaneously buckled microlens for improving outcoupled organic electroluminescence",,"Appl. Phys. Exp.",,"Vol. 3",,"pp. 082501-1-3.",2010,June
"Hongje Yun,Wonhoe Koo,r‰ͺ Žjl,Ξμ Œͺ,’|“Y G’j","BucklingŒ»Ϋ‚Ι‚ζ‚ιƒ}ƒCƒNƒƒŒƒ“ƒY‚π—p‚’‚½Organic Light Emitting Diode‚ΜŒυŽζoŒψ—¦‚ΜŒόγ","‘ζ57‰ρ‰ž—p•¨—ŠwŠΦŒW˜A‡u‰‰‰ο",,,,,,2010,Mar.
"HIDEO TAKEZOE,WONHOE KOO,Soon Moon Jeong,Fumito Araoka,Ken Ishikawa,S Nishimura,T. TOYOOKA","Light extraction from organic light emitting diodes enhanced by spontaneously formed buckles",,"Nature Photonics",,"Vol. 4",,"pp. 222-225.",2010,Feb.
"’|“YG’j,‹ο?˜π,“A{–δ,Ό‘Ί—Α","ΘƒGƒlŒ^—L‹@Œυƒ_ƒCƒI[ƒh‚ΜŠJ”­",,"ŒŽŠ§ƒfƒBƒXƒvƒŒƒC,",,"Vol. 10 (2010)",,"pp. 34-38.",2010,