Ho Won Jang

TL;DR: The results manifest that the ground state with the CE-type antiferromagnetic order is easily susceptible to destabilization into the A-type one even with a small fluctuation of the doping level, as suggested by the extremely narrow magnetic phase boundaries at x.5±0.005.

TL;DR: In this article , a crystal facet engineering of TiO2 nanostructures is proposed to control band structures for the hole blocking layer of BiVO4 nanodots, and two types of nanorods (NRs) and nanoflowers (NFs) with different (001) and (110) crystal facets, respectively, were designed and fabricated to fabricate Bi VO4/TiO2 heterostructure photoanodes.

TL;DR: The circularly-polarized-light detector based on a proper combination of the geometry-controlled TiO2-SnO2 hetero-chiral thin film as an effective chiroptical filter and the Si active layer shows excellent chiroPTical response with external quantum efficiency as high as 30% and high helicity selectivity in an intended wavelength range.

TL;DR: In this article, the electrical properties of metal contacts on laser-irradiated n-type GaN were investigated using synchrotron radiation photoemission spectroscopy, and a KrF excimer laser pulse of 600 mJ/cm2 led to a decrease in the Ni Schottky barrier height from 0.91 to 0.47 eV, resulting in the formation of a nonalloyed Ohmic contact with a specific contact resistivity of 1.7×10−6

TL;DR: In this article, a NiCo2O4 photoanode for water oxidation has been proposed, which is shown to be a promising photoanodes for water oxidization, but technical barriers such as charge recombination and photocorrosion prevent its practical application.