황성우 교수

Organic transistors with elastic conductors and dielectrics can be stretched up to 250% strain while maintaining the transistor characteristics. Strain-independent properties can be achieved after an initial “programming” cycle that causes the formation of microcracks in the semiconductor. The change in mobility with strain follows the same trend in different stretching directions. Liberating electronic devices from the confines of traditional rigid substrates can improve mechanical robustness a

Rapid progress in two-dimensional (2D) crystalline materials has recently enabled a range of device possibilities. These possibilities may be further expanded through the development of advanced 2D glass materials. Zachariasen carbon monolayer, a novel amorphous 2D carbon allotrope, was successfully synthesized on germanium surface. The one-atom-thick continuous amorphous layer, in which the in-plane carbon network was fully <i>sp</i>²-hybridized, was achieved at high temperatures (>9

Two-dimensional (2D) transition metal dichalcogenides (TMDs) have received great attentions because of diverse quantum electronic states such as topological insulating (TI), Weyl semimetallic (WSM) and superconducting states. Recently, the superconducting states emerged in pressurized semimetallic TMDs such as MoTe2 and WTe2 have become one of the central issues due to their predicted WSM states. However, the difficulty in synthetic control of chalcogen vacancies and the ambiguous magneto transp

We herein report the significantly improved thermoelectric performance of n-type Bi₂Te_2.7Se_0.3 polycrystalline bulks through band structure engineering achieved by Au-doping.

Vertically aligned ZnO nanorod arrays were directly grown on flexible and transparent oxidized bi-layer graphene electrodes by seedless electrochemical deposition. Oxidized defects on the graphene surface induce epitaxial growth of highly dense single crystal ZnO nanorods. The diameter, length as well as morphology of the nanorods can be effectively controlled by adjusting reaction conditions.