OPTICAL VIBRATION MODES IN SPHERICAL CORE-SHELL QUANTUM DOTS

被引：4
|
作者：
Xing, Y. [1 ]
Liang, X. X.
Wang, Z. P.
机构：
[1] Inner Mongolia Univ, Dept Phys, Hohhot 010021, Peoples R China
来源：
MODERN PHYSICS LETTERS B | 2013年 / 27卷 / 18期
关键词：
Optical vibration mode; electron-phonon interaction; core-shell quantum dots; BOUND POLARON; NANOCRYSTALS; CDSE; WIRE;
D O I：
10.1142/S0217984913501340
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Using a dielectric continuum approach, the optical vibration modes in a spherical core-shell quantum dots (QDs) imbedded in a host nonpolar material are studied. The dispersion relation and the corresponding electron-phonon interaction Hamiltonian are derived. The numerical calculations for the CdSe/ZnS system are performed. The results reveal that there are three branches frequencies of interface/surface optical phonon in the system. A detailed discussion of the combined effects of the spatial confinement and dielectric mismatch between the dot and the host medium is given.
引用
收藏
页数：9
相关论文
共 50 条
  • [1] Effects of ternary mixed crystals on interface/surface optical phonon in spherical core-shell quantum dots
    Liu, Y.
    Liu, L. P.
    Xing, Y.
    Liang, X. X.
    MODERN PHYSICS LETTERS B, 2019, 33 (06):
  • [2] Nonlinear optical properties of InP/ZnS core-shell quantum dots
    Wang, Chaoyu
    Niu, Ruipeng
    Zhou, Zhilong
    Wu, Wenzhi
    Chai, Zhijun
    Song, Yinglin
    Kong, Degui
    NANOTECHNOLOGY, 2020, 31 (13)
  • [3] Optical characterization of core-shell quantum dots embedded in synthetic saliva: Temporal dynamics
    de Santana, Juliana F.
    Pilla, Viviane
    Silva, Anielle C. A.
    Dantas, Noelio O.
    Messias, Djalmir N.
    Andrade, Acacio A.
    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY, 2015, 151 : 208 - 212
  • [4] Suppression of Blinking and Enhancement of Optical Properties of Core-Shell Quantum Dots by Structural Formulation
    Rani, Sweta
    Kumar, Jitendra
    IEEE TRANSACTIONS ON NANOTECHNOLOGY, 2020, 19 (19) : 792 - 799
  • [5] Core-shell quantum dots: Properties and applications
    Vasudevan, D.
    Gaddam, Rohit Ranganathan
    Trinchi, Adrian
    Cole, Ivan
    JOURNAL OF ALLOYS AND COMPOUNDS, 2015, 636 : 395 - 404
  • [6] Role of Interfacial Engineering of "Giant" Core-Shell Quantum Dots
    Selopal, Gurpreet Singh
    Abdelkarim, Omar
    Kumar, Pawan
    Jin, Lei
    Liu, Jiabin
    Zhao, Haiguang
    Yurtsever, Aycan
    Vidal, Francois
    Wang, Zhiming M.
    Rosei, Federico
    ACS APPLIED ENERGY MATERIALS, 2022, 5 (02) : 1447 - 1459
  • [7] HAADF-STEM for the analysis of core-shell quantum dots
    Fernandez-Delgado, N.
    Herrera, M.
    Pizarro, J.
    Galindo, P.
    Molina, S., I
    JOURNAL OF MATERIALS SCIENCE, 2018, 53 (21) : 15226 - 15236
  • [8] RETRACTED: Structural and Optical Properties of CdSe/CdTe Core-Shell Quantum Dots (Retracted Article)
    Ramalingam, G.
    Ragupathi, C.
    Rangasamy, Baskaran
    Colak, I.
    Vetrivelan, V.
    Poudineh, Neda
    Ravindran, Balasubramani
    Chang, Soon Woong
    Gengan, Robert M.
    JOURNAL OF NANOMATERIALS, 2022, 2022
  • [9] Nonlinear Optical Properties of CdSe and CdTe Core-Shell Quantum Dots and Their Applications
    Kalsoom, Um e
    Yi, Rongxing
    Qu, Junle
    Liu, Liwei
    FRONTIERS IN PHYSICS, 2021, 9
  • [10] Synthesis of CdTe and CdTe/CdS core-shell quantum dots and their optical properties
    Lu, Juanjuan
    Ge, Shenguang
    Wan, Fuwei
    Yu, Jinghua
    EMERGING FOCUS ON ADVANCED MATERIALS, PTS 1 AND 2, 2011, 306-307 : 1350 - 1353
12345