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Photoluminescence Studies of Both the Neutral and Negatively Charged Nitrogen-Vacancy Center in Diamond

Published online by Cambridge University Press:  13 January 2016

Kaiyue Wang ,
John W. Steeds ,
Zhihong Li  and
Yuming Tian
Kaiyue Wang*
Affiliation:
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi Province, China
John W. Steeds
Affiliation:
H. H. Wills Physics Laboratory, University of Bristol, Tyndall Avenue, Bristol BS8 1TL, UK
Zhihong Li
Affiliation:
School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
Yuming Tian
Affiliation:
School of Materials Science and Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, Shanxi Province, China
*
*Corresponding author. wangkaiyue8@163.com
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Abstract

In this study low temperature micro-photoluminescence technology was employed to investigate effects of the irradiation and nitrogen concentration on nitrogen-vacancy (NV) luminescence, with the photochromic and vibronic properties of the NV defects. Results showed that the NV luminescence was weakened due to recombination of self-interstitials created by electron irradiation in diamond and the vacancies within the structure of NV centers. For very pure diamond, the vacancies migrated the long distance to get trapped by N atoms only after sufficient high temperature annealing. As with the increase in nitrogen content, the migration distance of vacancies got smaller. The nitrogen also favored the formation of negatively charged NV centers with the donating electrons. Under the high-energy ultraviolet laser excitation, the photochromic property of the NV− center was also observed, though it was not stable. Besides, the NV centers showed very strong broad sidebands, and the vibrations involved one phonon with energy of ~42 meV and another with ~67 meV energy.

Keywords

NV centerphotoluminescencemigrationphotochromicvibronic
Type
Materials Applications
Information
Microscopy and Microanalysis , Volume 22 , Issue 1 , February 2016 , pp. 108 - 112
Copyright
© Microscopy Society of America 2016 

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