Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Seok-jun Han"'
Publikováno v:
ECS Journal of Solid State Science and Technology. 11:039001
Autor:
Kevin Hsu, Sarun Atiganyanun, Jacob Cytrynbaum, Sang Eon Han, Thomas L. Peng, Seok Jun Han, John B. Plumley, Sang M. Han
Publikováno v:
ACS Photonics. 5:1181-1187
We demonstrate that photonic media, when properly randomized to minimize the photon transport mean free path, can be used to coat a black substrate and reduce its temperature by radiative cooling. Even under strong solar radiation, the substrate temp
Publikováno v:
2019 IEEE 46th Photovoltaic Specialists Conference (PVSC).
We introduce a simple method to improve efficiency in micro/nano textured solar cells by diffusing a dopant through selective surface regions. This method is effective when the texture size is comparable to or smaller than the characteristic diffusio
Publikováno v:
ECS Journal of Solid State Science and Technology. 9:034013
Publikováno v:
Journal of IKEEE. 19:133-141
The IMS is an architectural control framework for delivering IP multimedia services such as voice, video, audio and data, the IMS supports not only the mobile communication system but also the existing wired and wireless network based on IP. The netw
Autor:
Brittany R. Hoard, Swapnadip Ghosh, John K. Grey, Ethan C. Culler, Seok Jun Han, Sang M. Han, Sang Eon Han, Jose E. Bonilla, Eric J. Martin
Publikováno v:
2017 IEEE 44th Photovoltaic Specialist Conference (PVSC).
We experimentally demonstrate highly efficient light-trapping structures that is achieved by breaking the symmetry in inverted nanopyramids on c-Si. The fabrication of these structures is cost-effective and scalable. Our optical measurement for the s
Autor:
Swapnadip Ghosh, Ethan C. Culler, Seok Jun Han, Brittany R. Hoard, Omar K. Abudayyeh, Sang M. Han, Jose E. Bonilla, Sang Eon Han
Publikováno v:
Optics express. 24(26)
We introduce a new approach to systematically break the symmetry in periodic nanostructures on a crystalline silicon surface. Our focus is inverted nanopyramid arrays with a prescribed symmetry. The arrangement and symmetry of nanopyramids are determ
Publikováno v:
Chemical Engineering Journal. 241:273-287
Detailed intrinsic reaction kinetics for the double-layered Pd/Rh-based TWC has been developed by combining the reaction kinetics derived for the individual Pd- and Rh-based catalysts without any further adjustment of the kinetic parameters obtained
Autor:
Sung Bong Kang, Seok Jun Han, Sung Bang Nam, Byong K. Cho, In-Sik Nam, Chang H. Kim, Se H. Oh
Publikováno v:
Topics in Catalysis. 56:298-305
The effect of aging atmosphere on the sintering behavior of commercial Pd and Rh catalysts as well as the TWC performance thereof has been investigated under straight oxidizing, reducing and periodic cycling aging conditions, in search of useful guid
Autor:
Byong K. Cho, Chang H. Kim, Sung Bong Kang, Se H. Oh, Sung Bang Nam, Seok Jun Han, In-Sik Nam
Publikováno v:
Chemical Engineering Journal. :117-121
A catalyst activity function for the commercial Pd-based three-way catalyst (TWC) has been developed to describe the effect of Pd loading ranging from 20 to 240 g/ft. 3 on its catalytic performance. Derived from the alteration of the Pd metallic surf