Showing papers by "Jun Hong Noh published in 2011"
TL;DR: A general synthetic strategy for fabricating transparent TiO(2) NT films on TCO substrates is described and the NTO layer was found to protect the TCO from degradation through a self-terminating mechanism by arresting the electric field-assisted dissolution process at the NT-NTO interface.
Abstract: We report on the preparation of transparent oriented titania nanotube (NT) photoelectrodes and the effect of illumination direction on light harvesting, electron transport, and recombination in dye-sensitized solar cells (DSSCs) incorporating these electrodes. High solar conversion efficiency requires that the incident light enters the cell from the photoelectrode side. However, it has been synthetically challenging to prepare transparent TiO2 NT electrodes by directly anodizing Ti metal films on transparent conducting oxide (TCO) substrates because of the difficulties of controlling the synthetic conditions. We describe a general synthetic strategy for fabricating transparent TiO2 NT films on TCO substrates. With the aid of a conducting Nb-doped TiO2 (NTO) layer between the Ti film and TCO substrate, the Ti film was anodized completely without degrading the TCO. The NTO layer was found to protect the TCO from degradation through a self-terminating mechanism by arresting the electric field-assisted dissol...
111 citations
50 citations
TL;DR: In this article, a whitish-blue phosphor based on a phosphate host matrix, γ-KCaPO4: Eu2+, was prepared by a conventional solid-state reaction method using slightly phosphorus deficient conditions and their photoluminescence properties were investigated.
42 citations