Publications
ResearcherID : C-5956-2008 (TY, h-index: 25) , AAZ-8749-2021 (RK, h-index: 13)
Google Scholar : TY (h-index: 35), RK (h-index: 14), KT (h-index: 4)
Research Square: TY
2006
Kokoro Kitamura, Takashi Yatsui, Motoichi Ohtsu
Near-field evaluation of a quantum size effect in self-aligned GaN whiskers fabricated by photochemical etching Journal Article
In: Optical Review, vol. 13, no. 4, pp. 222-224, 2006.
@article{2006kitamuraOptRev,
title = {Near-field evaluation of a quantum size effect in self-aligned GaN whiskers fabricated by photochemical etching},
author = {Kokoro Kitamura and Takashi Yatsui and Motoichi Ohtsu},
doi = {10.1007/s10043-006-0222-3},
year = {2006},
date = {2006-07-01},
journal = {Optical Review},
volume = {13},
number = {4},
pages = {222-224},
publisher = {Springer Nature},
abstract = {We fabricated nanoscale GaN whiskers using photochemical etching. The fabricated GaN whiskers were conjugated and aligned perpendicular to the incident light polarization used for photochemical etching in a self-assembling manner. Their far-field photoluminescence spectra exhibited a blue-shifted photoluminescence peak at 3.60eV. Near-field photoluminescence spectra of individual GaN whiskers were obtained, for the first time. The evaluation of the near-field spectra identified several peaks from individual whiskers, corresponding to a diameter range of 5-10 nm, and revealed a stepwise change in the diameter along the axis of individual whisker.},
keywords = {GaN, Photochemical etching, Whisker},
pubstate = {published},
tppubtype = {article}
}
We fabricated nanoscale GaN whiskers using photochemical etching. The fabricated GaN whiskers were conjugated and aligned perpendicular to the incident light polarization used for photochemical etching in a self-assembling manner. Their far-field photoluminescence spectra exhibited a blue-shifted photoluminescence peak at 3.60eV. Near-field photoluminescence spectra of individual GaN whiskers were obtained, for the first time. The evaluation of the near-field spectra identified several peaks from individual whiskers, corresponding to a diameter range of 5-10 nm, and revealed a stepwise change in the diameter along the axis of individual whisker.