Description of transport mechanisms in a very long wave infrared quantum cascade detector under strong magnetic field
Measurements of current have been performed on a very long wave infrared quantum cascade detector under strong magnetic field applied parallel to the growth axis, both under dark and light conditions. The analysis of dark current as a function of temperature highlights three regimes of transport inv...
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| Veröffentlicht in: | Journal of applied physics 2012-12, Vol.112 (12) |
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| container_title | Journal of applied physics |
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| creator | Jasnot, François-Régis Maëro, Simon Péré-Laperne, Nicolas de Vaulchier, Louis-Anne Guldner, Yves Carosella, Francesca Ferreira, Robson Delga, Alexandre Doyennette, Laetitia Berger, Vincent Trinité, Virginie Carras, Mathieu |
| description | Measurements of current have been performed on a very long wave infrared quantum cascade detector under strong magnetic field applied parallel to the growth axis, both under dark and light conditions. The analysis of dark current as a function of temperature highlights three regimes of transport involving the different energy levels of the structure. For photocurrent analysis, we developed a model based on a rate equation approach taking into account all the electronic levels of the structure. This model is in agreement with the oscillatory component of the experimental magnetophotocurrent. It allows to identify the key points controlling the electronic transport such as extraction from the upper level of the optically active quantum well, location of ionized impurities, and scattering mechanisms involved in the structure. This work is valuable for the future conception of high-performance quantum cascade detectors in infrared and far infrared range. |
| doi_str_mv | 10.1063/1.4769867 |
| format | Article |
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The analysis of dark current as a function of temperature highlights three regimes of transport involving the different energy levels of the structure. For photocurrent analysis, we developed a model based on a rate equation approach taking into account all the electronic levels of the structure. This model is in agreement with the oscillatory component of the experimental magnetophotocurrent. It allows to identify the key points controlling the electronic transport such as extraction from the upper level of the optically active quantum well, location of ionized impurities, and scattering mechanisms involved in the structure. 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The analysis of dark current as a function of temperature highlights three regimes of transport involving the different energy levels of the structure. For photocurrent analysis, we developed a model based on a rate equation approach taking into account all the electronic levels of the structure. This model is in agreement with the oscillatory component of the experimental magnetophotocurrent. It allows to identify the key points controlling the electronic transport such as extraction from the upper level of the optically active quantum well, location of ionized impurities, and scattering mechanisms involved in the structure. 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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | Cascades Condensed Matter Dark current Detectors Electronics Infrared Magnetic fields Materials Science Mathematical models Physics Transport |
| title | Description of transport mechanisms in a very long wave infrared quantum cascade detector under strong magnetic field |
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