18 "Water-soluble Polyfluorenes as an Electron Injecting Layer in PLEDs for Extremely High Quantum Efficiency", Seung-Hwan Oh, Doojin Vak, Seok-In Na, Tae-Woo Lee, and Dong-Yu Kim , Adv. Mater., In press 17 "[Columnlike] Structure of the Cross-Sectional Morphology of Bulk Heterojunction Materials", Ji Sun Moon, Jae Kwan Lee, Shinuk cho, Jiyun Byun, and Alan J. Heeger, Nano Letters, , 2008 (on-line publich) 16 Bulk Heterojunction Materials Composed of Poly(2,5-bis(3-tetradecylthiophen-2-yl)thieno[3,2-b]thiophene): Ultrafase Electron Transfer and Carrier Recombination, In-Wook Hwang, Jin Young Kim, Shinuk Cho, Jonathan Yuen, Nelson Coates, Kwanghee Lee, martin H… 15 "Improved electron injection in polymer light-emitting diodes using anionic conjugated polyelectrolyte", Youngeup Jin, Guillermo C. Bazan, Alan J. Heeger, Jin Young Kim, and Kwanghee Lee, Applied Physics Letters, 93,123304 (2008) 14 Effect of photo- and thermo-oxidative degradation on the performance of hybrid photovoltaic cells with a fluorene-based copolymer and nanocrystalline TiO2, Jang Jo, Doojin Vak, Yong-Young Noh, Seok-Soon Kim, Bogyu Lim and Dong-Yu Kim, J. Mater. Chem., 18,… 13 "Effect of substituted side chain on donor-acceptor conjugated copolymers", Shinuk Cho, Jung Hwa Seo, Sun Hee Kim, Suhee Song, Youngeup Jin, Kwanghee Lee, Hongsuk Suh, and Alan J.Heeger, Appl. Phys. Lett. 93, 263301 (2008) 12 "Bulk heterojunction bipolar field-effect transistors processed with alkane dithiol", Shinuk Cho, jae Kwan Lee, Ji Sun Moon, Jonathan Yuen, Kwanghee Lee, Alan J. Heeger, Organic Electronics, 9, 1107-1111 (2008) 11 Efficient photovoltaic device fashioned of highly aligned multilayers of electrospun TiO2 nanowire array with conjugated polymer, Hee-Sang Shim, Seok-In Na, Sang Hoon Nam, Hyo-Jin Ahn, Hae Jin Kim, Dong-Yu Kim, and Won Bae Kim,Appl. Phys. Lett., 92, 1831… 10 "Polarity effects of polymer gate electrets on non-volatile organic field-effect transistor memory", Kang-Jun Beag, Yong-Young Noh, Jieun Ghim, Bogyu Lim, and Dong-Yu Kim, Adv. Fuct. Mater 18, 3678-3685 (2008) 9 "Highly polarized light emission from uniaxially aligned thin films of biphenyl/thienothiophene cooligomer", Yong-Young Noh, Dong-Yu Kim, Masahiro Misaki d, Kiyoshi Yase, Thin Solid Films, 516, 7505-7510, 2008 8 "Modified electrode architecture for efficient and air-stable polymer solar cells based on P3HT:PCBM", Seok-In Na, Seok-Soon Kim, Jang Jo, Ki-Sung Lee, Seong-Ju Park and Dong-Yu Kim, J. Photoch. Photobio. A : Chemistry, 194, 161-166, 2008 7 Fabrication of TiO2 nanotubes by using electrodeposited ZnO nanorod template and their application to hybrid solar cells, Seok-In Na, Seok-Soon Kim, Woong-Ki Hong, Jeong-Woo Park, Jang Jo, Yoon-Chae Nah, Takhee Lee and Dong-Yu Kim, Electrochimica Acta, … 6 "Efficient polymer solar cells with surface relief gratings fabricated by simple soft lithography", Seok-In Na, Seok-Soon Kim, Jang Jo, Seung-Hwan Oh, Juhwan Kim, and Dong-Yu Kim, Adv. Funct. Mater., 18,3956-3963, 2008 5 "Efficient and flexible ITO-free organic solar cells using highly conductive polymer anodes", Seok-In Na, Seok-Soon Kim, Jang Jo, and Dong-Yu Kim, Adv. Mater 20, 4061-4067, 2008 4 "Reversible switching characteristics of polyfluorene-derivative single layer film for non-volatile memory devices", Tae-Wook Kim, Seung-Hwan Oh, Hyejung Choi, Gunuk Wang, Dong-Yu Kim, Hyunsang Hwang, and Takhee Lee, Appl. Phys. Lett., 92, 253308, 2008 3 "Reliable Organic Nonvolatile Memory Device using Polyfluorene-derivative Single Layer Film", Tae-Wook Kim, Seung-Hwan Oh, Hyejung Choi, Gunuk Wang, Hyunsang Hwang, Dong-Yu Kim and Takhee Lee, IEEE Elect. Dev. Lett. 29, 8, 852-855, 2008 2 "Direct Metal Transfer method for Cross-bar type Polymer Non-volatile Memory Applications”,Tae-Wook Kim, Kyeongmi Lee, Seung-Hwan Oh, Gunuk Wang, Dong-Yu Kim, Gun-Young Jung, Takhee Lee, Nanotechnology. 19. 405201 (2008) 1 "Plasmon enhanced performance of organic solar cells using electrodeposited Ag nanoparticles", Seok-Soon Kim, Seok-In Na , Jang Jo , Dong-Yu Kim ,and Yoon-Chae Nah, Appl. Phys. Lett., 93, 073307 ( 2008 )