Korea Research Institute of Chemical Technology

Gwangju Institute of Science and Technology

Hyun Jeong

Bong Keun Song

Yong Hwan Kim

Gun-young Jung

Sang-Mook Kim

Jeong Yong Ryu

Ki-Seok Kim

Jae Kwang Song

Eun Suk An

Kee Hoon Won

Mun-Seok Jeong

Seung Yeong Park

Jeong Mi Kwon

The light extraction efficiency of a typical light-emitting diode (LED) is improved by incorporating one-dimensional ZnO nanorods. The light extraction efficiency is improved about 31% due to the waveguide effect of ZnO sub-microrods, compared to an LED without the nanorods. Other shapes of ZnO microrods and nanorods are produced using a simple non-catalytic wet chemical growth method at a low temperature on an indium-tin-oxide (ITO) top contact layer with no seed layer. The crystal morphology of a needle-like or flat top hexagonal structure and the density and size of ZnO microrods and nanorods are easily modified by controlling the pH value and growth time. The waveguide phenomenon in each ZnO rod is observed using confocal scanning electroluminescence microscopy (CSEM) and micro-electroluminescence spectra (MES).

Light-emitting diode having zinc oxide nanorods and method of fabricating the same

The present invention relates to a process for preparing phenolic polymers utilizingperoxidase. More particularly, the present invention relates to a process for preparing phenolic polymers by polymerizing phenolic monomers withperoxidase instead of using typical peroxidase which essentially requires the use of toxic formalin or peroxidase of plant origin which is very costly and easily deactivated by hydrogen peroxide in the polymerization of phenolic monomers, wherein the polymerization is conducted in the presence of a polar organic solvent under mild reaction conditions of atmospheric temperature and pressure to economically produce desired phenolic polymers having excellent water and chemical resistances with high yield.

[object Object]

Growing community of inventors

Gwangju, South Korea

Hyun Jeong