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Open Access Monovacancy Type Defects in Fast Neutron Irradiated Czochralski Silicon

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The irradiation defects in neutron-irradiated Czochralski silicon (CZSi) were analyzed by positron annihilation spectroscopy and Fourier transform infrared (FTIR) spectroscopy. The results show that there are the massive monovacancy-type defects (VO) and multi-vacancy-type defects (V2 and V2O) in irradiated CZSi. After heat-treatment at 200–450 , the absorption bands at 720 and 919.6 cm-1 in measured FTIR spectra are associated with the monovacancy-type defects, and they have the same positron lifetime as VO (i.e., 290 ps). After heat-treatment at 450–600 , the monovacancy-type is eliminated gradually, the V4-type defects are enhanced, and the concentration of the V4-type defects reaches a maximum of 70% after heat-treatment at 600 .
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Keywords: Czochralski silicon; neutron irradiate; positron annihilation; vacancy-type defect

Document Type: Research Article

Affiliations: 1: College of Science, Tianjin University of Technology, Tianjin 300384, China 2: School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China 3: School of Mathematics and Physics, Tianjin University of Technology and Education, Tianjin 300222, China 4: School of Material Science and Engineering, Hebei University of Technology, Tianjin 300130, China

Publication date: 2013-06-01

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  • Journal of the Chinese Ceramic Society (JCCS), published in Chinese and in English, is a comprehensive monthly periodical focused on the fields of inorganic and non-metallic materials. The main purpose of the JCCS is to report the latest creative achievements in research, production and design for ceramics, glass, cementing materials, refractory, artificial crystals and other non-metallic materials. JCCS is regarded as an important journal in inorganic and non-metallic materials sciences in China and has been awarded by China Association for Science and Technology. The full-text of papers in JCCS is also published by CNKI (China National Knowledge Infrastructure). JCCS is indexed in EI Compendex, CA( Chemical Abstracts) ,SA and Ж and more than 20 databases.
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