Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector
In this work, oscillator strength and quantum efficiency of new spherical GaN/AlGaN quantum dot was investigated. In order to obtain these parameters, at first, Schrödinger equation is solved in GaN/AlGaN spherical coordinate system in effective mass approximation, and energy leve...
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| Format: | Article |
| Language: | English |
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Isfahan University of Technology
2018-02-01
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| Series: | Iranian Journal of Physics Research |
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| Online Access: | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2016-3&slc_lang=en&sid=1 |
| _version_ | 1818255003376156672 |
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| author | Ali Vahedi |
| author_facet | Ali Vahedi |
| author_sort | Ali Vahedi |
| collection | DOAJ |
| description | In this work, oscillator strength and quantum efficiency of new spherical GaN/AlGaN quantum dot was investigated. In order to obtain these parameters, at first, Schrödinger equation is solved in GaN/AlGaN spherical coordinate system in effective mass approximation, and energy level, wave function and transition matrix element of the parameter are obtained. The results show that oscillator strength decreases with increase of mol fraction and dot size. This effect is more obvious for high mol fractions. With increasing mol fraction of defect, the peak of quantum efficiency shows blue shift. Increasing the radius of core and shell causes the red shift of quantum efficiency peak. The red and blue shifts can be very useful in tunning and controling the detector wavelenght range |
| first_indexed | 2024-12-12T17:04:57Z |
| format | Article |
| id | doaj.art-a9fc4be48b4345cabfbcf5af06121369 |
| institution | Directory Open Access Journal |
| issn | 1682-6957 2345-3664 |
| language | English |
| last_indexed | 2024-12-12T17:04:57Z |
| publishDate | 2018-02-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Iranian Journal of Physics Research |
| spelling | doaj.art-a9fc4be48b4345cabfbcf5af061213692022-12-22T00:18:02ZengIsfahan University of TechnologyIranian Journal of Physics Research1682-69572345-36642018-02-01175805812Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetectorAli Vahedi0 Islamic Azad University In this work, oscillator strength and quantum efficiency of new spherical GaN/AlGaN quantum dot was investigated. In order to obtain these parameters, at first, Schrödinger equation is solved in GaN/AlGaN spherical coordinate system in effective mass approximation, and energy level, wave function and transition matrix element of the parameter are obtained. The results show that oscillator strength decreases with increase of mol fraction and dot size. This effect is more obvious for high mol fractions. With increasing mol fraction of defect, the peak of quantum efficiency shows blue shift. Increasing the radius of core and shell causes the red shift of quantum efficiency peak. The red and blue shifts can be very useful in tunning and controling the detector wavelenght range http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2016-3&slc_lang=en&sid=1AlGaN/GaN nanostructures infrared photodetectors quantum efficiency quantum dots. |
| spellingShingle | Ali Vahedi Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector Iranian Journal of Physics Research AlGaN/GaN nanostructures infrared photodetectors quantum efficiency quantum dots. |
| title | Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector |
| title_full | Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector |
| title_fullStr | Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector |
| title_full_unstemmed | Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector |
| title_short | Quantum efficiency of Core/ Shell GaN/AlGaN quantum dot photodetector |
| title_sort | quantum efficiency of core shell gan algan quantum dot photodetector |
| topic | AlGaN/GaN nanostructures infrared photodetectors quantum efficiency quantum dots. |
| url | http://ijpr.iut.ac.ir/browse.php?a_code=A-10-2016-3&slc_lang=en&sid=1 |
| work_keys_str_mv | AT alivahedi quantumefficiencyofcoreshellganalganquantumdotphotodetector |