Synthesis and optical properties of mullite nanowires

Han Kyu Seong, Ungkil Kim, Myoung Ha Kim, Heon Jin Choi, Youngho Lee, Won Seon Seo

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Single-crystalline mullite (3Al2O3·2SiO2) nanowires have been synthesized on silicon substrates by forcing aluminum and chromium chloride powders to react under an ammonia gas flow. The diameter and length of the nanowires have uniform diameters of <100 nm and several micrometers, respectively. High-resolution transmission electron microscope and selected-area electron diffraction analyses indicated that the nanowires were almost structural defect free and had a single-crystalline phase with a 〈0001〉 growth direction. The photoluminescence spectra showed that the mullite nanowires reached an emission peak at the center wavelength of 442 nm originating from the Al-O bonds in preference to the Al-O and Si-O bonds in the mullite bonding structure. Comparison of the photoluminescence between as-synthesized, oxygen-annealed, and plasma-etched nanowires indicates that the nanowires have few defects (i.e., oxygen vacancies).

Original languageEnglish
Pages (from-to)1937-1939
Number of pages3
JournalJournal of the American Ceramic Society
Volume90
Issue number6
DOIs
Publication statusPublished - 2007 Jun 1

Fingerprint

porcellanite
Mullite
optical property
Nanowires
Optical properties
defect
electron
oxygen
gas flow
diffraction
silicon
chromium
Photoluminescence
ammonia
aluminum
chloride
Crystalline materials
wavelength
plasma
substrate

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Seong, Han Kyu ; Kim, Ungkil ; Kim, Myoung Ha ; Choi, Heon Jin ; Lee, Youngho ; Seo, Won Seon. / Synthesis and optical properties of mullite nanowires. In: Journal of the American Ceramic Society. 2007 ; Vol. 90, No. 6. pp. 1937-1939.
@article{a9a8ae4f66364656b9ea93a6fbad1043,
title = "Synthesis and optical properties of mullite nanowires",
abstract = "Single-crystalline mullite (3Al2O3·2SiO2) nanowires have been synthesized on silicon substrates by forcing aluminum and chromium chloride powders to react under an ammonia gas flow. The diameter and length of the nanowires have uniform diameters of <100 nm and several micrometers, respectively. High-resolution transmission electron microscope and selected-area electron diffraction analyses indicated that the nanowires were almost structural defect free and had a single-crystalline phase with a 〈0001〉 growth direction. The photoluminescence spectra showed that the mullite nanowires reached an emission peak at the center wavelength of 442 nm originating from the Al-O bonds in preference to the Al-O and Si-O bonds in the mullite bonding structure. Comparison of the photoluminescence between as-synthesized, oxygen-annealed, and plasma-etched nanowires indicates that the nanowires have few defects (i.e., oxygen vacancies).",
author = "Seong, {Han Kyu} and Ungkil Kim and Kim, {Myoung Ha} and Choi, {Heon Jin} and Youngho Lee and Seo, {Won Seon}",
year = "2007",
month = "6",
day = "1",
doi = "10.1111/j.1551-2916.2007.01699.x",
language = "English",
volume = "90",
pages = "1937--1939",
journal = "Journal of the American Ceramic Society",
issn = "0002-7820",
publisher = "Wiley-Blackwell",
number = "6",

}

Synthesis and optical properties of mullite nanowires. / Seong, Han Kyu; Kim, Ungkil; Kim, Myoung Ha; Choi, Heon Jin; Lee, Youngho; Seo, Won Seon.

In: Journal of the American Ceramic Society, Vol. 90, No. 6, 01.06.2007, p. 1937-1939.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and optical properties of mullite nanowires

AU - Seong, Han Kyu

AU - Kim, Ungkil

AU - Kim, Myoung Ha

AU - Choi, Heon Jin

AU - Lee, Youngho

AU - Seo, Won Seon

PY - 2007/6/1

Y1 - 2007/6/1

N2 - Single-crystalline mullite (3Al2O3·2SiO2) nanowires have been synthesized on silicon substrates by forcing aluminum and chromium chloride powders to react under an ammonia gas flow. The diameter and length of the nanowires have uniform diameters of <100 nm and several micrometers, respectively. High-resolution transmission electron microscope and selected-area electron diffraction analyses indicated that the nanowires were almost structural defect free and had a single-crystalline phase with a 〈0001〉 growth direction. The photoluminescence spectra showed that the mullite nanowires reached an emission peak at the center wavelength of 442 nm originating from the Al-O bonds in preference to the Al-O and Si-O bonds in the mullite bonding structure. Comparison of the photoluminescence between as-synthesized, oxygen-annealed, and plasma-etched nanowires indicates that the nanowires have few defects (i.e., oxygen vacancies).

AB - Single-crystalline mullite (3Al2O3·2SiO2) nanowires have been synthesized on silicon substrates by forcing aluminum and chromium chloride powders to react under an ammonia gas flow. The diameter and length of the nanowires have uniform diameters of <100 nm and several micrometers, respectively. High-resolution transmission electron microscope and selected-area electron diffraction analyses indicated that the nanowires were almost structural defect free and had a single-crystalline phase with a 〈0001〉 growth direction. The photoluminescence spectra showed that the mullite nanowires reached an emission peak at the center wavelength of 442 nm originating from the Al-O bonds in preference to the Al-O and Si-O bonds in the mullite bonding structure. Comparison of the photoluminescence between as-synthesized, oxygen-annealed, and plasma-etched nanowires indicates that the nanowires have few defects (i.e., oxygen vacancies).

UR - http://www.scopus.com/inward/record.url?scp=34249862888&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34249862888&partnerID=8YFLogxK

U2 - 10.1111/j.1551-2916.2007.01699.x

DO - 10.1111/j.1551-2916.2007.01699.x

M3 - Article

AN - SCOPUS:34249862888

VL - 90

SP - 1937

EP - 1939

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

SN - 0002-7820

IS - 6

ER -