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Monte Carlo analysis for the evaluation of the distribution of potential fluctuations within a disordered semiconductor Alam, Jennifer Sherry
Abstract
Disordered semiconductors, including poly-crystalline and amorphous semiconductors, have unique properties that can be attributed to the disorder present within their atomic structure. While the distribution of electronic states associated with a defect-free crystalline semiconductor terminates abruptly at the band edges, in a disordered semiconductor, electronic states encroach into this otherwise empty gap region. This encroachment of the electronic states into the band gap region of a disordered semiconductor can be credited for many of its unique properties. Unfortunately, due to its random nature, the quantitative characterization of the disorder that is present within a disordered semiconductor has proven a difficult task to grapple with. The distribution of potential fluctuations found within such a material has a direct impact on the distribution of electronic states within a disordered semiconductor. The aim of this thesis is to characterize this distribution of potential fluctuations. In particular, I use a Monte Carlo approach, where simulations, replicating the random nature of the defects found within a disordered semiconductor, are performed a large number of times in order to obtain the distribution of potential fluctuations associated with such a semiconductor. With the distribution of potential fluctuations evaluated, the impact on the corresponding distribution of electronic states will be probed.
Item Metadata
Title |
Monte Carlo analysis for the evaluation of the distribution of potential fluctuations within a disordered semiconductor
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2018
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Description |
Disordered semiconductors, including poly-crystalline and amorphous semiconductors, have unique properties that can be attributed to the disorder present within their atomic structure. While the distribution of electronic states associated with a defect-free crystalline semiconductor terminates abruptly at the band edges, in a disordered semiconductor, electronic states encroach into this otherwise empty gap region. This encroachment of the electronic states into the band gap region of a disordered semiconductor can be credited for many of its unique properties. Unfortunately, due to its random nature, the quantitative characterization of the disorder that is present within a disordered semiconductor has proven a difficult task to grapple with. The distribution of potential fluctuations found within such a material has a direct impact on the distribution of electronic states within a disordered semiconductor. The aim of this thesis is to characterize this distribution of potential fluctuations. In particular, I use a Monte Carlo approach, where simulations, replicating the random nature of the defects found within a disordered semiconductor, are performed a large number of times in order to obtain the distribution of potential fluctuations associated with such a semiconductor. With the distribution of potential fluctuations evaluated, the impact on the corresponding distribution of electronic states will be probed.
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Genre | |
Type | |
Language |
eng
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Date Available |
2018-12-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0375771
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
2019-02
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Campus | |
Scholarly Level |
Graduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International