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

被引：65
作者：
Chae, WS [1 ]
Ko, JH [1 ]
Hwang, IW [1 ]
Kim, YR [1 ]
机构：
[1] Yonsei Univ, Dept Chem, Seodaemun Gu, Seoul 120749, South Korea
来源：
CHEMICAL PHYSICS LETTERS | 2002年 / 365卷 / 1-2期
关键词：
D O I：
10.1016/S0009-2614(02)01418-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
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. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：49 / 56
页数：8
相关论文
共 33 条
  • [1] Perspectives on the physical chemistry of semiconductor nanocrystals
    Alivisatos, AP
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1996, 100 (31) : 13226 - 13239
  • [2] Semiconductor clusters, nanocrystals, and quantum dots
    Alivisatos, AP
    [J]. SCIENCE, 1996, 271 (5251) : 933 - 937
  • [3] Study of the growth of ZnS nanoparticles in water/AOT/n-heptane microemulsions by UV-absorption spectroscopy
    Calandra, P
    Goffredi, M
    Liveri, VT
    [J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1999, 160 (01) : 9 - 13
  • [4] Optical and magnetic properties induced by structural confinement of ternary chalcogenide in AlMCM-41 nanotube
    Chae, WS
    Hwang, IW
    Jung, JS
    Kim, YR
    [J]. CHEMICAL PHYSICS LETTERS, 2001, 341 (3-4) : 279 - 284
  • [5] Formation, structure and fluorescence of CdS clusters in a mesoporous zeolite
    Chen, W
    Xu, Y
    Lin, ZJ
    Wang, ZG
    Lin, LY
    [J]. SOLID STATE COMMUNICATIONS, 1998, 105 (02) : 129 - 134
  • [6] LUMINESCENCE AND PHOTOPHYSICS OF CDS SEMICONDUCTOR CLUSTERS - THE NATURE OF THE EMITTING ELECTRONIC STATE
    CHESTNOY, N
    HARRIS, TD
    HULL, R
    BRUS, LE
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (15) : 3393 - 3399
  • [7] PHOTOPHYSICS OF QUANTIZED COLLOIDAL SEMICONDUCTORS DRAMATIC LUMINESCENCE ENHANCEMENT BY BINDING OF SIMPLE AMINES
    DANNHAUSER, T
    ONEIL, M
    JOHANSSON, K
    WHITTEN, D
    MCLENDON, G
    [J]. JOURNAL OF PHYSICAL CHEMISTRY, 1986, 90 (23) : 6074 - 6076
  • [8] Studies on absorption spectra of mixed zinc cadmium sulphide microparticles stabilized in AOT-heptane-water and CTAB-chloroform-water inverse micellar systems
    De, GC
    Roy, AM
    Saha, S
    [J]. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 1995, 92 (03) : 189 - 192
  • [9] COLLOIDAL ZN1-XCDXS - OPTICAL SATURATION OF THE EXCITON BAND AND PRIMARY PHOTOCHEMISTRY STUDIED BY SUBPICOSECOND LASER FLASH-PHOTOLYSIS
    ERNSTING, NP
    KASCHKE, M
    WELLER, H
    KATSIKAS, L
    [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 1990, 7 (08) : 1630 - 1637
  • [10] Picosecond time-resolved luminescence studies of recombination processes in CdTe
    Ghislotti, G
    Ielmini, D
    Riedo, E
    Martinelli, M
    Dellagiovanna, M
    [J]. SOLID STATE COMMUNICATIONS, 1999, 111 (04) : 211 - 216
1234