Temperature dependence of photoluminescence from CdSe nanocrystals embedded in silica matrix

被引：2
|
作者：
Chahboun, A. [1 ,2 ]
Levichev, S. [1 ]
Rolo, A. G. [1 ]
Conde, O. [3 ]
Gomes, M. J. M. [1 ]
机构：
[1] Univ Minho, Ctr Fis, P-4710057 Braga, Portugal
[2] FSDM, Dept Phys, LPS, Fes, Morocco
[3] Univ Lisbon, Dept Phys, P-1699 Lisbon, Portugal
来源：
JOURNAL OF LUMINESCENCE | 2009年 / 129卷 / 10期
关键词：
CdSe; Nanocrystals; Photoluminescence; Temperature dependence; Thermal expansion; QUANTUM DOTS; GAP; SEMICONDUCTORS; ENERGY; FILMS; OXIDE;
D O I：
10.1016/j.jlumin.2009.06.007
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this work, CdSe nanocrystals (NCs) embedded in SiO2 matrix were grown by radio frequency (RF)sputtering technique. X-ray technique was used to characterise the structural properties of the system. The NC's size was estimated to be around 4 +/- 1 nm in diameter. The temperature dependence of the photoluminescence from the CdSe/SiO2 System showed carriers thermal exchange between the NCs and deep defects in the matrix. The evolution of the excitonic energy emission with temperature is about 10 meV in the temperature range 15-295 K. This weak shift was explained by thermal mismatch between the matrix and the NCs. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1235 / 1238
页数：4
相关论文
共 50 条
  • [21] The influence of the implantation temperature on the photoluminescence characteristics of Si nanocrystals embedded into SiO2 matrix
    Sias, US
    Moreira, EC
    Ribeiro, E
    Boudinov, H
    Amaral, L
    Behar, M
    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2004, 218 : 405 - 409
  • [22] Memory effect on CdSe nanocrystals embedded in SiO2 matrix
    Levichev, S.
    Basa, P.
    Horvath, Zs. J.
    Chahboun, A.
    Rolo, A. G.
    Barradas, N. P.
    Alves, E.
    Gomes, M. J. M.
    SOLID STATE COMMUNICATIONS, 2008, 148 (3-4) : 105 - 108
  • [23] Synthesis, characterization and spectral temperature-dependence of thioglycerol-CdSe nanocrystals
    Ben Brahim, Nassim
    Poggi, Melanie
    Mohamed, Naim Bel Haj
    Ben Chaabane, Rafik
    Haouari, Mohamed
    Negrerie, Michel
    Ben Ouada, Hafedh
    JOURNAL OF LUMINESCENCE, 2016, 177 : 402 - 408
  • [24] Low temperature growth of metastable cubic CdSe nanocrystals and their photoluminescence properties
    Al-Amri, Amal M.
    Yaghmour, S. J.
    Mahmoud, Waleed E.
    JOURNAL OF CRYSTAL GROWTH, 2011, 334 (01) : 76 - 79
  • [25] Formation of PbSe/CdSe Core/Shell Nanocrystals for Stable Near-Infrared High Photoluminescence Emission
    Zhang, Yu
    Dai, Quanqin
    Li, Xinbi
    Cui, Qingzhou
    Gu, Zhiyong
    Zou, Bo
    Wang, Yiding
    Yu, William W.
    NANOSCALE RESEARCH LETTERS, 2010, 5 (08): : 1279 - 1283
  • [26] Temperature-Dependent Photoluminescence of Silver-Indium-Sulfide Nanocrystals in Aqueous Colloidal Solutions
    Stroyuk, Oleksandr
    Raevskaya, Alexandra
    Spranger, Felix
    Gaponik, Nikolai
    Zahn, Dietrich R. T.
    CHEMPHYSCHEM, 2019, 20 (12) : 1640 - 1648
  • [27] Structural and photoluminescence properties of silicon nanocrystals embedded in SiC matrix prepared by magnetron sputtering
    Xia, Zhou
    Huang, Shihua
    SOLID STATE COMMUNICATIONS, 2010, 150 (19-20) : 914 - 918
  • [28] Synthesis and characterization of mondispersed CdSe nanocrystals at lower temperature
    He, R
    Gu, HC
    COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2006, 272 (1-2) : 111 - 116
  • [29] Dielectric matrix imposed stress-strain effect on photoluminescence of Ge nanocrystals
    Wu, R. S.
    Luo, X. F.
    Yuan, C. L.
    Zhang, Z. R.
    SOLID STATE COMMUNICATIONS, 2009, 149 (15-16) : 598 - 601
  • [30] Interface structure of silicon nanocrystals embedded in an amorphous silica matrix
    Soulairol, Romain
    Cleri, Fabrizio
    SOLID STATE SCIENCES, 2010, 12 (02) : 163 - 171
12345