Medium-wavelength, normal-incidence, p-type Si/SiGe quantum well infrared photodetector with background limited performance up to 85 K

P. Kruck; M. Helm; T. Fromherz; G. Bauer; J. F. Nützel; G. Abstreiter

doi:10.1063/1.117263

Medium-wavelength, normal-incidence, p-type Si/SiGe quantum well infrared photodetector with background limited performance up to 85 K

P. Kruck, M. Helm, T. Fromherz, G. Bauer, J. F. Nützel, G. Abstreiter

TUM Emeriti of Excellence

Research output: Contribution to journal › Article › peer-review

57 Scopus citations

Abstract

The detector characteristics of a pseudomorphic p-type Si_0.64Ge_0.36/Si quantum well infrared photodetector are reported. The device exhibits a photoresponse between 3 and 8 μm with a peak responsivity of R_p = 76 mA/W, at a peak wavelength of λ_p = 5 μm, resulting in a detectivity as high as D_λ* = 2 × 10¹⁰ cm√Hz/W at a temperature of T = 77 K. Background limited infrared performance is achieved up to T = 85 K. Investigation of the polarization dependence shows that in-plane polarized radiation produces the largest photoresponse, thus making normal-incidence detection feasible. The relevant optical transitions are analyzed on the basis of a self-consistent 6-band Luttinger-Kohn calculation including the in-plane dispersion.

Original language	English
Pages (from-to)	3372-3374
Number of pages	3
Journal	Applied Physics Letters
Volume	69
Issue number	22
DOIs	https://doi.org/10.1063/1.117263
State	Published - 25 Nov 1996

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title = "Medium-wavelength, normal-incidence, p-type Si/SiGe quantum well infrared photodetector with background limited performance up to 85 K",

abstract = "The detector characteristics of a pseudomorphic p-type Si0.64Ge0.36/Si quantum well infrared photodetector are reported. The device exhibits a photoresponse between 3 and 8 μm with a peak responsivity of Rp = 76 mA/W, at a peak wavelength of λp = 5 μm, resulting in a detectivity as high as Dλ* = 2 × 1010 cm√Hz/W at a temperature of T = 77 K. Background limited infrared performance is achieved up to T = 85 K. Investigation of the polarization dependence shows that in-plane polarized radiation produces the largest photoresponse, thus making normal-incidence detection feasible. The relevant optical transitions are analyzed on the basis of a self-consistent 6-band Luttinger-Kohn calculation including the in-plane dispersion.",

author = "P. Kruck and M. Helm and T. Fromherz and G. Bauer and N{\"u}tzel, {J. F.} and G. Abstreiter",

year = "1996",

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T1 - Medium-wavelength, normal-incidence, p-type Si/SiGe quantum well infrared photodetector with background limited performance up to 85 K

AU - Kruck, P.

AU - Helm, M.

AU - Fromherz, T.

AU - Bauer, G.

AU - Nützel, J. F.

AU - Abstreiter, G.

PY - 1996/11/25

Y1 - 1996/11/25

N2 - The detector characteristics of a pseudomorphic p-type Si0.64Ge0.36/Si quantum well infrared photodetector are reported. The device exhibits a photoresponse between 3 and 8 μm with a peak responsivity of Rp = 76 mA/W, at a peak wavelength of λp = 5 μm, resulting in a detectivity as high as Dλ* = 2 × 1010 cm√Hz/W at a temperature of T = 77 K. Background limited infrared performance is achieved up to T = 85 K. Investigation of the polarization dependence shows that in-plane polarized radiation produces the largest photoresponse, thus making normal-incidence detection feasible. The relevant optical transitions are analyzed on the basis of a self-consistent 6-band Luttinger-Kohn calculation including the in-plane dispersion.

AB - The detector characteristics of a pseudomorphic p-type Si0.64Ge0.36/Si quantum well infrared photodetector are reported. The device exhibits a photoresponse between 3 and 8 μm with a peak responsivity of Rp = 76 mA/W, at a peak wavelength of λp = 5 μm, resulting in a detectivity as high as Dλ* = 2 × 1010 cm√Hz/W at a temperature of T = 77 K. Background limited infrared performance is achieved up to T = 85 K. Investigation of the polarization dependence shows that in-plane polarized radiation produces the largest photoresponse, thus making normal-incidence detection feasible. The relevant optical transitions are analyzed on the basis of a self-consistent 6-band Luttinger-Kohn calculation including the in-plane dispersion.

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Medium-wavelength, normal-incidence, p-type Si/SiGe quantum well infrared photodetector with background limited performance up to 85 K

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