A general theoretical framework for the modelling of miniband transport in semiconductor nanostructures under broadband illumination is presented. Our approach is based on the multi-subband three-dimensional Boltzmann transport equation and allows to investigate both the steady-state and the time-dependent dynamics. The model has been succesfully applied to the problem of the design and optimization of Terahertz quantum well infrared photodetectors and is now applied to a more generic superlattice system. We consider the carrier dynamics in multi-miniband superlattices under black-body illumination showing the existence of regimes in which the current in some minibands is inverted, eventually leading to absolute negative resistance.

Miniband quantum transport in semiconductor nanodevices under broadband illumination / Castellano, Fabrizio; Iotti, Rita Claudia; Rossi, Fausto. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 193:1(2009), pp. 012089-1-012089-4. [10.1088/1742-6596/193/1/012089]

Miniband quantum transport in semiconductor nanodevices under broadband illumination

CASTELLANO, FABRIZIO;IOTTI, Rita Claudia;ROSSI, FAUSTO
2009

Abstract

A general theoretical framework for the modelling of miniband transport in semiconductor nanostructures under broadband illumination is presented. Our approach is based on the multi-subband three-dimensional Boltzmann transport equation and allows to investigate both the steady-state and the time-dependent dynamics. The model has been succesfully applied to the problem of the design and optimization of Terahertz quantum well infrared photodetectors and is now applied to a more generic superlattice system. We consider the carrier dynamics in multi-miniband superlattices under black-body illumination showing the existence of regimes in which the current in some minibands is inverted, eventually leading to absolute negative resistance.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2290960
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