Generation of fluorescent CdSe nanocrystals by short-pulse laser fragmentation

被引：0
|
作者：
Yu. T. Zholudov
C. L. Sajti
N. N. Slipchenko
B. N. Chichkov
机构：
[1] Kharkiv National University of Radioelectronics,
[2] Laser Zentrum Hannover e.V.,undefined
来源：
Journal of Nanoparticle Research | 2015年 / 17卷
关键词：
Nanoparticles; Laser fragmentation; Cadmium selenide; Optical properties; Fluorescence; Quantum dots; Colloids;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A simple liquid-phase laser fragmentation approach, resulting in the rapid transformation of CdSe microcrystals into colloidal quantum dots (QDs), is presented. Laser fragmentation is achieved by irradiating a CdSe suspension in dimethylformamide with intense infrared, picosecond laser pulses followed by surface passivation with oleylamine or different types of phosphines. The generated QDs reveal perfect colloidal stability preventing agglomeration and precipitation, and show characteristic QD absorption and fluorescence characteristics, whereas their emission properties strongly depend on the surface states and applied capping ligands. These QDs show distinct photoemission under 405-nm single-photon and 800-nm multi-photon excitations in the 560- to 610-nm spectral region corresponding to the QDs size of about 1.5–2 nm in diameter which is confirmed by transmission electron microscopy.
引用
收藏
相关论文
共 50 条
  • [1] Generation of fluorescent CdSe nanocrystals by short-pulse laser fragmentation
    Zholudov, Yu. T.
    Sajti, C. L.
    Slipchenko, N. N.
    Chichkov, B. N.
    [J]. JOURNAL OF NANOPARTICLE RESEARCH, 2015, 17 (12) : 1 - 10
  • [2] Urine stone fragmentation by short-pulse thulium fiber laser
    Larin, Sergey
    Zaharkin, Vyacheslav
    Vinnichenko, Andrey
    [J]. 2014 INTERNATIONAL CONFERENCE LASER OPTICS, 2014,
  • [3] SHORT-PULSE GENERATION FROM XECL EXCIMER LASER
    CHRISTOV, CG
    CHALTAKOV, IV
    LYUTSKANOV, VL
    TOMOV, IV
    [J]. JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1985, 18 (08): : 714 - 715
  • [4] Physics of giant electromagnetic pulse generation in short-pulse laser experiments
    Poye, A.
    Hulin, S.
    Bailly-Grandvaux, M.
    Dubois, J. -L.
    Ribolzi, J.
    Raffestin, D.
    Bardon, M.
    Lubrano-Lavaderci, F.
    D'Humieres, E.
    Santos, J. J.
    Nicolai, Ph.
    Tikhonchuk, V.
    [J]. PHYSICAL REVIEW E, 2015, 91 (04):
  • [5] Short-pulse laser ablation of solids: From phase explosion to fragmentation
    Lorazo, P
    Lewis, LJ
    Meunier, M
    [J]. PHYSICAL REVIEW LETTERS, 2003, 91 (22)
  • [6] Entropy generation during laser short-pulse heating process
    A. Ozsunar
    [J]. Heat and Mass Transfer, 2006, 43 : 111 - 115
  • [7] SHORT-PULSE IODINE LASER
    BASOV, NG
    ZUEV, VS
    [J]. NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS, 1976, 31 (01): : 129 - 151
  • [8] Short-pulse laser machining
    不详
    [J]. OPTICS AND LASER TECHNOLOGY, 1996, 28 (07): : R3 - R3
  • [9] Entropy generation during laser short-pulse heating process
    Ozsunar, A.
    [J]. HEAT AND MASS TRANSFER, 2006, 43 (02) : 111 - 115
  • [10] SHORT-PULSE GENERATION FROM INTRACAVITY LASER BREAKDOWN PLASMAS
    PICHE, M
    BELANGER, PA
    RIOUX, M
    [J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1977, 67 (10) : 1404 - 1405
12345