A fully quantum-mechanical model for electron transport in quantum-well infrared photodetectors (QWIPs) is presented, based on a self-consistent solution of the coupled rate equations. The important macroscopic parameters like current density, responsivity, and capture probability can be estimated directly from this first-principles calculation. The applicability of the model was tested by comparison with experimental measurements from a GaAs/AlGaAs device, and good agreement was found. The model is general and can be applied to any other material system or QWIP design. (C) 2004 American Institute of Physics.
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Univ Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, BrazilUniv Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
Claro, M. S.
Fernandes, F. M.
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Univ Estado Rio de Janeiro, Fac Engn, Campus Maracana, BR-20550013 Rio De Janeiro, RJ, BrazilUniv Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
Fernandes, F. M.
da Silva, E. C. F.
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Univ Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, BrazilUniv Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil
da Silva, E. C. F.
Quivy, A. A.
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Univ Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, BrazilUniv Sao Paulo, Inst Fis, LNMS, Rua Matao 1371, BR-05508090 Sao Paulo, SP, Brazil