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Journal of Materials Science

, Volume 49, Issue 12, pp 4349–4353 | Cite as

Silicon nanocrystallites produced via a chemical etching method and photoluminescence properties

  • Jun Zhu
  • Yue-di Wu
  • Ting-hui Li
  • Hai-tao Chen
  • Li Fan
  • Xiao-bing Chen
Article

Abstract

Silicon nanocrystallites (NCs) were fabricated via a simple and inexpensive method. The Si powders were chemically etched in the mixture of hydrofluoric and nitric acid, followed by the ultrasonic vibration in benzene, de-ionized water, or ethanol. The as-prepared Si particles feature two different sizes of ~2 and ~10 nm, respectively. The smaller particles are Si NCs suspended in the solvent, and the larger ones are several small Si NCs wrapped in amorphous shell. As excited with line of 340–420 nm, the suspensions display violet-blue emissions, which relate to the quantum confinement effect. The photoluminescence intensity of benzene suspension is the strongest and that of ethanol is the weakest.

Keywords

Chemical Etching Ultrasonic Vibration Quantum Confinement Effect Amorphous Shell Silicon Nanocrystallites 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors acknowledge the financial support from the Natural Science Foundation of Education Bureau of Jiangsu Province, China (Grant No. 12KJB140012) and the Natural Science Foundation of Jiangsu Province, China (Grant No. BK20130453).

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Jun Zhu
    • 1
  • Yue-di Wu
    • 1
  • Ting-hui Li
    • 2
    • 3
  • Hai-tao Chen
    • 1
  • Li Fan
    • 1
  • Xiao-bing Chen
    • 1
  1. 1.College of Physics Science and Technology and Institute of Optoelectronic TechnologyYangzhou UniversityYangzhouPeople’s Republic of China
  2. 2.College of Electronic EngineeringGuangxi Normal UniversityGuilinPeople’s Republic of China
  3. 3.National Laboratory of Solid State MicrostructuresNanjing UniversityNanjingPeople’s Republic of China

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