DRIFT EFFECTS IN HGCDTE DETECTORS
The characteristics of temporal drift in spectral responsivity of HgCdTe photodetectors is investigated and found to have an origin different from what has been reported in literature. Traditionally, the literature attributes the cause of drift due to the deposition of thin film of ice water on the...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Taylor's University
2013-08-01
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| Series: | Journal of Engineering Science and Technology |
| Subjects: | |
| Online Access: | http://jestec.taylors.edu.my/Vol%208%20Issue%204%20August%2013/Volume%20(8)%20Issue%20(4)%20472-481.pdf |
| _version_ | 1811297926192824320 |
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| author | B. PAVAN KUMAR M. W. AKRAM BAHNIMAN GHOSH JOSEPH JOHN |
| author_facet | B. PAVAN KUMAR M. W. AKRAM BAHNIMAN GHOSH JOSEPH JOHN |
| author_sort | B. PAVAN KUMAR |
| collection | DOAJ |
| description | The characteristics of temporal drift in spectral responsivity of HgCdTe photodetectors is investigated and found to have an origin different from what has been reported in literature. Traditionally, the literature attributes the cause of drift due to the deposition of thin film of ice water on the active area of the cold detector. The source of drift as proposed in this paper is more critical owing to the difficulties in acquisition of infrared temperature measurements. A model explaining the drift phenomenon in HgCdTe detectors is described by considering the deep trapping of charge carriers and generation of radiation induced deep trap centers which are meta-stable in nature. A theoretical model is fitted to the experimental data. A comparison of the model with the experimental data shows that the radiation induced deep trap centers and charge trapping effects are mainly responsible for the drift phenomenon observed in HgCdTe detectors. |
| first_indexed | 2024-04-13T06:12:21Z |
| format | Article |
| id | doaj.art-1c2b47053fc14138ab4e48641d35da9e |
| institution | Directory Open Access Journal |
| issn | 1823-4690 |
| language | English |
| last_indexed | 2024-04-13T06:12:21Z |
| publishDate | 2013-08-01 |
| publisher | Taylor's University |
| record_format | Article |
| series | Journal of Engineering Science and Technology |
| spelling | doaj.art-1c2b47053fc14138ab4e48641d35da9e2022-12-22T02:58:58ZengTaylor's UniversityJournal of Engineering Science and Technology1823-46902013-08-0184472481DRIFT EFFECTS IN HGCDTE DETECTORSB. PAVAN KUMARM. W. AKRAMBAHNIMAN GHOSHJOSEPH JOHNThe characteristics of temporal drift in spectral responsivity of HgCdTe photodetectors is investigated and found to have an origin different from what has been reported in literature. Traditionally, the literature attributes the cause of drift due to the deposition of thin film of ice water on the active area of the cold detector. The source of drift as proposed in this paper is more critical owing to the difficulties in acquisition of infrared temperature measurements. A model explaining the drift phenomenon in HgCdTe detectors is described by considering the deep trapping of charge carriers and generation of radiation induced deep trap centers which are meta-stable in nature. A theoretical model is fitted to the experimental data. A comparison of the model with the experimental data shows that the radiation induced deep trap centers and charge trapping effects are mainly responsible for the drift phenomenon observed in HgCdTe detectors.http://jestec.taylors.edu.my/Vol%208%20Issue%204%20August%2013/Volume%20(8)%20Issue%20(4)%20472-481.pdfHgCdTeSpectral responsivityMeta-stable trapsQuantum efficiencyDetectivityCarrier lifetime |
| spellingShingle | B. PAVAN KUMAR M. W. AKRAM BAHNIMAN GHOSH JOSEPH JOHN DRIFT EFFECTS IN HGCDTE DETECTORS Journal of Engineering Science and Technology HgCdTe Spectral responsivity Meta-stable traps Quantum efficiency Detectivity Carrier lifetime |
| title | DRIFT EFFECTS IN HGCDTE DETECTORS |
| title_full | DRIFT EFFECTS IN HGCDTE DETECTORS |
| title_fullStr | DRIFT EFFECTS IN HGCDTE DETECTORS |
| title_full_unstemmed | DRIFT EFFECTS IN HGCDTE DETECTORS |
| title_short | DRIFT EFFECTS IN HGCDTE DETECTORS |
| title_sort | drift effects in hgcdte detectors |
| topic | HgCdTe Spectral responsivity Meta-stable traps Quantum efficiency Detectivity Carrier lifetime |
| url | http://jestec.taylors.edu.my/Vol%208%20Issue%204%20August%2013/Volume%20(8)%20Issue%20(4)%20472-481.pdf |
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