Cu-doping effects in CdI2 layered nanostructures: The role of photoinduced electron-phonon anharmonic interactions

被引:15
作者
Miah, M. Idrish [1 ,3 ]
Kasperczyk, J. [2 ]
机构
[1] Griffith Univ, Nanoscale Sci & Technol Ctr, Brisbane, Qld 4111, Australia
[2] J Dlugosz Univ Czestochowa, Inst Phys, PL-42201 Czestochowa, Poland
[3] Univ Chittagong, Dept Phys, Chittagong 4331, Bangladesh
关键词
anharmonic lattice modes; cadmium compounds; copper; electron-phonon interactions; impurity distribution; nanostructured materials; optical harmonic generation; INDUCED 2ND-HARMONIC GENERATION; STIMULATED PHOTOLUMINESCENCE; BAND-STRUCTURE; COPPER; SNSE2;
D O I
10.1063/1.3077171
中图分类号
O59 [应用物理学];
学科分类号
摘要
The Cu-doping effects in CdI2 layered nanocrystals were studied experimentally. We used a photostimulated second harmonic generation (PSHG) in order to investigate the nanoconfined effects. It was found that the PSHG increased with increasing Cu-doping within a low-density limit. For the higher Cu content the PSHG output signal was decreased to the value observed for the undoped CdI2 crystal. The above results suggest that the Cu-metallic clusters play a crucial role in the processes responsible for the observed nonlinear optical effects. The large enhancement of the PSHG observed in the Cu-doped thin nanocrystals confirms the fact that the Cu-impurities of low concentrations favor stronger local photoinduced anharmonic electron-phonon interactions.
引用
收藏
页数:3
相关论文
共 17 条
  • [1] Photostimulated transformation of defects in cadmium iodide with copper and coactivators
    Bonder, V
    [J]. MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2000, 71 : 258 - 262
  • [2] ULTRAVIOLET PROPERTIES AND BAND-STRUCTURE OF SNS2, SNSE2, CDI2, PBI2, BII3 AND BIOI CRYSTALS
    BORDAS, J
    ROBERTSON, J
    JAKOBSSON, A
    [J]. JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1978, 11 (12): : 2607 - 2621
  • [3] CATALANO IM, 1985, HELV PHYS ACTA, V58, P329
  • [4] STIMULATED PHOTO-LUMINESCENCE IN INDIUM SELENIDE
    CINGOLANI, A
    FERRARA, M
    LUGARA, M
    LEVY, F
    [J]. PHYSICAL REVIEW B, 1982, 25 (02): : 1174 - 1178
  • [5] DEVIS CC, 1985, LASER ELECTROOPTICS
  • [6] OPTICAL FUNCTIONS OF LAYERED CADMIUM DICHALCOGENIDE CRYSTALS IN THE ENERGY RANGE 4-20 eV.
    Dovgii, Ya.O.
    Kityk, I.V.
    Aleksandrov, Yu.M.
    Kolobanov, V.N.
    Makhov, V.N.
    Mikhailin, V.V.
    [J]. Journal of applied spectroscopy, 1985, 43 (04) : 1168 - 1171
  • [7] Forbrugerr?det, 1993, BILST BORN
  • [8] Optical poling of oligoether acrylate photopolymers doped by stilbene-benzoate derivative chromophores
    Kityk, IV
    Makowska-Janusik, M
    Gondek, E
    Krzeminska, L
    Danel, A
    Plucinski, KJ
    Benet, S
    Sahraoui, B
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2004, 16 (03) : 231 - 239
  • [9] IR-Induced second harmonic generation in Sb2Te3-BaF2-PbCl2 glasses
    Kityk, IV
    [J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (37) : 10083 - 10087
  • [10] Magnetic field induced ferroelectricity in copper doped CdI2 single crystals
    Kityk, IV
    Pyroha, SA
    Mydlarz, T
    Kasperczyk, J
    Czerwinski, M
    [J]. FERROELECTRICS, 1998, 205 (1-4) : 107 - 118