Selected Publication: 1. Quantum Dots and Nano Materials for display/lighting, image sensors His work on Quantum Dot materials and devices began in around 2002 when he turned the research subject from development of CL and/or PL phosphors to research on EL devices and various convergence technologies related to solar cells and batteries. Based on nano-phosphor technology, he had found various new QD materials, structures and devices. 2. Nano Carbon and Electronics for flexible electrode, TFT, photonics, and sensors His interests in nano carbon such as CNTs and Graphene and their applications go back to 1998. As an ideal electron emitter, CNTs have been studied at the early stage of his nanocarbon related work from 1998 to 2004 then he had published more than 100 papers on nanocarbons and their applications. Nano carbon has been one of key subjects over his research career and it is still one of major focus of his group’s work. 3. Display, New Energy, and Medical Imaging System From early 1990’s, he had developed a number of display devices and systems such as FED, OLED, LCD, Laser TV, 3D TV, LED, PDP, flexible displays. He also had initiated various energy devices such as LIB, flexible battery and various types of solar cells at Samsung Electronics and it has been the framework of display and energy business of Samsung. He also has been leading research on the multi dose X-ray, and Tera Herz imaging system for future Samsung business, as well.