单分散性CdSe纳米晶的合成成核及其生长过程

戴全钦 王英楠 李冬妹 陈海勇 阚世海 邹勃 宋艳立 高世勇 聂延光 路红亮

戴全钦, 王英楠, 李冬妹, 陈海勇, 阚世海, 邹勃, 宋艳立, 高世勇, 聂延光, 路红亮, 等. 单分散性CdSe纳米晶的合成成核及其生长过程[J]. 高压物理学报, 2008, 22(1): 11-14 . doi: 10.11858/gywlxb.2008.01.003
引用本文: 戴全钦, 王英楠, 李冬妹, 陈海勇, 阚世海, 邹勃, 宋艳立, 高世勇, 聂延光, 路红亮, 等. 单分散性CdSe纳米晶的合成成核及其生长过程[J]. 高压物理学报, 2008, 22(1): 11-14 . doi: 10.11858/gywlxb.2008.01.003
DAI Quan-Qin, WANG Ying-Nan, LI Dong-Mei, CHEN Hai-Yong, KAN Shi-Hai, ZOU Bo, SONG Yan-Li, GAO Shi-Yong, NIE Yan-Guang, LU Hong-Liang, et al.. Synthesis of Monodisperse CdSe Nanocrystals: Nucleation and Growth[J]. Chinese Journal of High Pressure Physics, 2008, 22(1): 11-14 . doi: 10.11858/gywlxb.2008.01.003
Citation: DAI Quan-Qin, WANG Ying-Nan, LI Dong-Mei, CHEN Hai-Yong, KAN Shi-Hai, ZOU Bo, SONG Yan-Li, GAO Shi-Yong, NIE Yan-Guang, LU Hong-Liang, et al.. Synthesis of Monodisperse CdSe Nanocrystals: Nucleation and Growth[J]. Chinese Journal of High Pressure Physics, 2008, 22(1): 11-14 . doi: 10.11858/gywlxb.2008.01.003

单分散性CdSe纳米晶的合成成核及其生长过程

doi: 10.11858/gywlxb.2008.01.003

Synthesis of Monodisperse CdSe Nanocrystals: Nucleation and Growth

  • 摘要: 在氩气保护下,用三辛基亚磷酸和油酸分别作为Se和Cd的配位体,在260~300 ℃的十八烯溶液中合成了尺寸可控的CdSe纳米晶。该纳米晶不用进行进一步的提纯和尺寸分离就具有单分散性,其量子尺寸限域效应非常明显吸收光谱的第一吸收峰峰位随着纳米晶的长大而发生红移;该纳米晶质量很高,具有很强的发光能力,其发射光谱对称的形状和合理的Stokes频移(13 nm)显示,该纳米晶的发光完全出自带隙,没有来自缺陷的发光。此外,实验结果表明,通过改变三辛基亚磷酸的浓度可以调节成核和生长的快慢,从而可以在不同的反应时间得到不同尺寸的单分散性CdSe纳米晶。

     

  • Huynh W, Peng X G, Alivisatos A P. CdSe Nanocrystal Rods/Poly(3-Hexylthiophene) Composite Photovoltaic Devices [J]. Adv Mater, 1999, 11: 923-927.
    Sundar V C, Lee J, Heine J R, et al. Full Color Emission from Ⅱ-Ⅵ Semiconductor Quantum Dot-Polymer Composites [J]. Adv Mater, 2000, 12: 1102-1105.
    Bruchez M, Moronne M, Gin P, et al. Semiconductor Nanocrystals as Fluorescent Biological Labels [J]. Science, 1998, 281: 2013-2016.
    Murray C B, Norris D J, Bawendi M G. Synthesis and Characterization of Nearly Monodisperse CdE (E=S, Se, Te) Semiconductor Nanocrystallites [J]. J Am Chem Soc, 1993, 115: 8706-8715.
    Manna L, Scher E C, Alivisatos A P. Synthesis of Soluble and Processable Rod-, Arrow-, Teardrop-, and Tetrapod-Shaped CdSe Nanocrystals [J]. J Am Chem Soc, 2000, 122: 12700-12706.
    Peng Z A, Peng X G. Formation of High-Quality CdTe, CdSe, and CdS Nanocrystals Using CdO as Precursor [J]. J Am Chem Soc, 2001, 123: 183-184.
    Kan S H, Mokari T, Rothenberg E, et al. Synthesis and Size-Dependent Properties of Zinc-Blende Semiconductor Quantum Rods [J]. Nature Mater, 2003, 2: 155-158.
    Yu W W, Peng X G. Formation of High-Quality CdS and Other Ⅱ-Ⅵ Semiconductor Nanocrystals in Noncoordinating Solvents: Tunable Reactivity of Monomers [J]. Angew Chem Int Ed, 2002, 41: 2368-2371.
    Yu W W, Wang Y A, Peng X G. Formation and Stability of Size-, Shape-, and Structure-Controlled CdTe Nanocrystals: Ligand Effects on Monomers and Nanocrystals [J]. Chem Mater, 2003, 15: 4300-4308.
    Battaglia D, Peng X G. Formation of High Quality InP and InAs Nanocrystals in a Noncoordinating Solvent [J]. Nano Lett, 2002, 2: 1027-1030.
    Wu D G, Kordesch M E, van Patten P G. A New Class of Capping Ligands for CdSe Nanocrystal Synthesis [J]. Chem Mater, 2005, 17: 6436-6441.
    Yu W W, Falkner J C, Shih B S, et al. Preparation and Characterization of Monodisperse PbSe Semiconductor Nanocrystals in a Noncoordinating Solvent [J]. Chem Mater, 2004, 16: 3318-3322.
    Peng X G, Wickham J, Alivisatos A P, et al. Kinetics of Ⅱ-Ⅵ and Ⅲ-Ⅴ Colloidal Semiconductor Nanocrystal Growth: Focusing of Size Distributions [J]. J Am Chem Soc, 1998, 120: 5343-5344.
    Dai Q Q, Li D M, Jiang S, et al. Synthesis of Monodisperse CdSe Nanocrystals Directly Open to Air: Monomer Reactivity Tuned by the Selenium Ligand [J]. J Cryst Growth, 2006, 292: 14-18.
    La Mer V K, Dinegar R H. Theory, Production and Mechanism of Formation of Monodispersed Hydrosols [J]. J Am Chem Soc, 1950, 72: 4847-4854.
  • 加载中
计量
  • 文章访问数:  7963
  • HTML全文浏览量:  384
  • PDF下载量:  912
出版历程
  • 收稿日期:  2007-02-05
  • 修回日期:  2007-05-28
  • 发布日期:  2008-03-05

目录

    /

    返回文章
    返回