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INTERNATIONAL JOURNAL OF CREATIVE RESEARCH THOUGHTS - IJCRT (IJCRT.ORG)
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ISSN Approved Journal No: 2320-2882 | Impact factor: 7.97 | ESTD Year: 2013
Call For Paper - Volume 12 | Issue 4 | Month- April 2024
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Paper Title
DEFECTS STUDY IN CDSE USING POSITRON ANNIHILATION LIFETIME SPECTROSCOPY
Authors
Dr. M. C. Mishra
Keywords
Defects study in CdSe using positron annihilation lifetime spectroscopy
Abstract
Positron life time measurement have been done for CdSe. Samples were prepared in pellet form. Two identical scintillation detectors with the time resolution 300 ps have been used to measure start and stop signal. PAL spectra have been recorded by connecting electronics and MCA data acquisition system. PAL spectra have been analyzed by PATFITT88 software to fit the life times. Samples were annealed and measured life times. The variation in positron lifetime as well as intensity for CdSe due to heat treatment is observed. The value of life time (?1) is attributed to diffused vacancies at grain boundaries and second life time(?2) is attributed to annihilation of positron directly trapped in vacancy like defect in the samples. It is clear from the tables that there is small change in life-time (?2 ) of annealed samples in comparison to pristine life-time (?1) in CdSe. Secondary lifetime (?2) increases but corresponding intensity decreases respectively, which indicate that concentration of defects is decreased due to annealing
IJCRT's Publication Details
Unique Identification Number - IJCRT2004626
Paper ID - 214948
Page Number(s) - 4461-4465
Pubished in - Volume 8 | Issue 4 | April 2020
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Publisher Name - IJCRT | www.ijcrt.org | ISSN : 2320-2882
E-ISSN Number - 2320-2882
Cite this article
Dr. M. C. Mishra, "DEFECTS STUDY IN CDSE USING POSITRON ANNIHILATION LIFETIME SPECTROSCOPY", International Journal of Creative Research Thoughts (IJCRT), ISSN:2320-2882, Volume.8, Issue 4, pp.4461-4465, April 2020, Available at :http://www.ijcrt.org/papers/IJCRT2004626.pdf
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ISSN: 2320-2882 Impact Factor: 7.97 and ISSN APPROVED Journal Starting Year (ESTD) : 2013
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ISSN: 2320-2882 Impact Factor: 7.97 and ISSN APPROVED Journal Starting Year (ESTD) : 2013
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