Emission characteristics of CdS nanoparticles induced by confinement within MCM-41 nanotubes

Weon Sik Chae, Ju Hye Ko, In Wook Hwang, Yong Rok Kim

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Nanosize CdS particles confined in siliceous MCM-41 channels were prepared by using reversed micelles as an insertion carrier. As-made CdS in MCM-41 host shows photoluminescence (PL) signals from both band-edge and surface defect state recombination. Calcinated CdS in the host, however, presents relatively suppressed surface defect state emission compared with band-edge emission. Such emission characteristics after calcination is ascribed to the reduced probability of recombination through deeply trapped surface defect states compared with direct excitonic recombination, which is possibly due to surface capping of the CdS nanoparticles by the host nanochannels.

Original languageEnglish
Pages (from-to)49-56
Number of pages8
JournalChemical Physics Letters
Volume365
Issue number1-2
DOIs
Publication statusPublished - 2002 Oct 28

Fingerprint

Surface defects
surface defects
Nanotubes
nanotubes
Nanoparticles
nanoparticles
Micelles
Calcination
roasting
insertion
micelles
Photoluminescence
photoluminescence
defects
MCM-41

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Chae, Weon Sik ; Ko, Ju Hye ; Hwang, In Wook ; Kim, Yong Rok. / Emission characteristics of CdS nanoparticles induced by confinement within MCM-41 nanotubes. In: Chemical Physics Letters. 2002 ; Vol. 365, No. 1-2. pp. 49-56.
@article{3e55e27fdebd4d6bb464a9734ef20ea9,
title = "Emission characteristics of CdS nanoparticles induced by confinement within MCM-41 nanotubes",
abstract = "Nanosize CdS particles confined in siliceous MCM-41 channels were prepared by using reversed micelles as an insertion carrier. As-made CdS in MCM-41 host shows photoluminescence (PL) signals from both band-edge and surface defect state recombination. Calcinated CdS in the host, however, presents relatively suppressed surface defect state emission compared with band-edge emission. Such emission characteristics after calcination is ascribed to the reduced probability of recombination through deeply trapped surface defect states compared with direct excitonic recombination, which is possibly due to surface capping of the CdS nanoparticles by the host nanochannels.",
author = "Chae, {Weon Sik} and Ko, {Ju Hye} and Hwang, {In Wook} and Kim, {Yong Rok}",
year = "2002",
month = "10",
day = "28",
doi = "10.1016/S0009-2614(02)01418-5",
language = "English",
volume = "365",
pages = "49--56",
journal = "Chemical Physics Letters",
issn = "0009-2614",
publisher = "Elsevier",
number = "1-2",

}

Emission characteristics of CdS nanoparticles induced by confinement within MCM-41 nanotubes. / Chae, Weon Sik; Ko, Ju Hye; Hwang, In Wook; Kim, Yong Rok.

In: Chemical Physics Letters, Vol. 365, No. 1-2, 28.10.2002, p. 49-56.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Emission characteristics of CdS nanoparticles induced by confinement within MCM-41 nanotubes

AU - Chae, Weon Sik

AU - Ko, Ju Hye

AU - Hwang, In Wook

AU - Kim, Yong Rok

PY - 2002/10/28

Y1 - 2002/10/28

N2 - Nanosize CdS particles confined in siliceous MCM-41 channels were prepared by using reversed micelles as an insertion carrier. As-made CdS in MCM-41 host shows photoluminescence (PL) signals from both band-edge and surface defect state recombination. Calcinated CdS in the host, however, presents relatively suppressed surface defect state emission compared with band-edge emission. Such emission characteristics after calcination is ascribed to the reduced probability of recombination through deeply trapped surface defect states compared with direct excitonic recombination, which is possibly due to surface capping of the CdS nanoparticles by the host nanochannels.

AB - Nanosize CdS particles confined in siliceous MCM-41 channels were prepared by using reversed micelles as an insertion carrier. As-made CdS in MCM-41 host shows photoluminescence (PL) signals from both band-edge and surface defect state recombination. Calcinated CdS in the host, however, presents relatively suppressed surface defect state emission compared with band-edge emission. Such emission characteristics after calcination is ascribed to the reduced probability of recombination through deeply trapped surface defect states compared with direct excitonic recombination, which is possibly due to surface capping of the CdS nanoparticles by the host nanochannels.

UR - http://www.scopus.com/inward/record.url?scp=0037190976&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0037190976&partnerID=8YFLogxK

U2 - 10.1016/S0009-2614(02)01418-5

DO - 10.1016/S0009-2614(02)01418-5

M3 - Article

AN - SCOPUS:0037190976

VL - 365

SP - 49

EP - 56

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614

IS - 1-2

ER -