CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 739-741.

• Articles • Previous Articles     Next Articles

Synthesis of Zinc Blende CdTe Nanocrystals and Facile Shape Conversion from Multipods to Dot-shaped Particles

SHEN Huai-bin1,2, XING Ming1, LI Lin-song2, WANG Hong-zhe2* and CHEN Xia1*   

  1. 1. College of Life Science, Jilin University, Changchun 130012, P. R. China;
    2. Key Laboratory for Special Functional Materials, Ministry of Education, Henan University, Kaifeng 475004, P. R. China
  • Received:2010-07-28 Revised:2010-10-29 Online:2011-09-25 Published:2011-09-06
  • Contact: CHEN Xia;WANG Hong-zhe E-mail:bbbbz@163.com; whz@henu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20771035).

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Abstract: Branched CdTe nanocrystals with zinc blende structure were directly synthesized in the early growth stage at a high initial concentration of cadmium precursor and a high molar ratio of Cd precursor to Te precuesor. Activation of the cadmium precursor by octadecylamine was found to be critical for the formation of branched CdTe nanocrystals. Furthermore, these as-prepared CdTe nanocrystals can evolve into nearly monodisperse dots through Ostwald ripening and still keep strong photoluminescence. These results manifest a new route to synthesize branch- and dot-shaped CdTe nanocrystals with zinc blende structure.

Key words: CdTe, Zinc blende, Branch-shaped nanocrystal