1. Haksu Kang, Hyehyun Lee, Seonghui Park, Jongwon Hwang, Youngran Jo, Yongsu Kang, Daewon Park and Youngson Choe, Enhanced performance of organic photovoltaic cells using F4-TCNQ and PEDOT:PSS nanocomposites as hole conducting layer, KJF International Conference on Organic Materials for Electronics and Photonics, 제주 (Aug.23.2009)
2. Haksu Kang, Hyunwoo Song, Sohyun Park, Kyungnam Park, Phuong Thanh Vu, Natarajan Senthilkumar and Youngson Choe, THE INFLUENCE OF CATALYST ON THE MECHANICAL PROPERTIES AND MORPHOLOGY OF EPOXY/POLYAMIDE/POLYCARBONATE/MPD REACTIVE BLENDS, 8th Japan-Korea Symposium on Materials & Interfaces, Sapporo, Japan (Nov.5.2008)
3. Natarajan Senthilkumar, Sohyun Park, Kyungnam Park, Daewon Park and Youngson Choe, FLEXIBLE PHOTOVOLTAIC CELLS WITH BCP AS AN ORGANIC BUFFER AND CuPc:F4-TCNQ CO-EVAPORATED ONTO PLASMA-TREATED PEDOT:PSS LAYER, RENEWABLE ENERGY 2008, 부산 (Oct.13.2008)
4. Sohyun Park, Kyungnam Park, Phuong Thanh Vu, Daewon Park and Youngson Choe, Properties of Photovoltaic Cells with CuPc Layer Doped with F4-TCNQ by Co-evaporation onto Plasma-treated PEDOT:PSS Layer, The 22nd International Liquid Crystal Conference, 제주 (Jun.29.2008)
5. Youngson Choe, Sohyun Park, Hyunwoo Song, Haksu Kang and Daewon Park, Enhanced Efficiency in Organic Electroluminescence Devices Using Molecularly-ordered NPD:C60 and Plasma-treated PEDOT:PSS Layers, The 22nd International Liquid Crystal Conference, 제주 (Jun.29.2008)
6. Youngson Choe, Phuong Thanh Vu, Kyungnam Park, Hyunwoo Song and Sohyun Park, Morphology and Mechanical Properties of Epoxy/Polyamides/DDS/2E4MZ-CNS Blends, The 9th Cross Straits Symposium on Materals, Energy, and Environmental Engineering, 포항 (Nov.21.2007)
7. Youngson Choe, Kyungnam Park, Hyunwoo Song and Phuong Thanh Vu, Molecular Ordering and Current-Voltage Characteristics of Co-evaporated NPD/C60 Thin Films, 2007 Asian Symposium Advanced Materials, Vladivostok, Russia (Oct.2.2007)
8. Youngson Choe, Dosoon Kang, Sohyun Park and Phuong Thanh Vu, Molecular Ordering of 1-TNATA Thin Films and Organic Electroluminescence Device Properties, 4th International Symposium on Advanced Materials in Asia-Pacific Rims, Nigata, Japan (Jul.12.2007)
9. Youngson Choe and Dosoon Kang, Raman Spectra of Molecularly-Ordered 1-TNATA Thin Films and Organic Electroluminescence Device Properties, ADMD 2007, 대구 (Jun.21.2007)
10. Youngson Choe, Molecular Alignment and Current-Voltage Characteristics of m-MTDATA Thin Films, 2006 Japan/ Taiwan/Korea Chem. Eng. Conference, Kagoshima, Japan (Nov.17.2006)
11. Youngson Choe, Dosoon Kang and Sung Oh, Molecular ordering and current-voltage characteristics of m-MTDATA thin film, IUMRS-ICA-2006, 제주 (Sep.9.2006)
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