A normal incidence p-type strain layer quantum well infrared photodetector with 19.2 μm peak detection wavelength
Identifieur interne : 015B69 ( Main/Repository ); précédent : 015B68; suivant : 015B70A normal incidence p-type strain layer quantum well infrared photodetector with 19.2 μm peak detection wavelength
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Abstract
A normal incidence p-type compressively strained layer superlattice (SL) In0.27Ga0.73As/Al0.15Ga0.85As quantum well infrared photodetector with a spectral response peak at 19.2 μm and a cutoff wavelength λc>20 μm under moderate background illumination have been demonstrated in this work. A responsivity of 50 mA/W and a gain-quantum efficiency product (ηg) of 0.32% at Vb=20 mV and T=40 K were obtained for this device. The device layer structure consists of four InGaAs/AlGaAs SL-absorber layers sandwiched by wide GaAs barrier layers. Results of the responsivity, dark current, noise, background photocurrent measurements, and analysis of the device performance are discussed. © 1998 American Institute of Physics.
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<author><name sortKey="Chu, J" uniqKey="Chu J">J. Chu</name>
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<country xml:lang="fr">États-Unis</country>
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<wicri:cityArea>Department of Electrical and Computer Engineering, University of Florida, Gainesville</wicri:cityArea>
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<author><name sortKey="Li, Sheng S" uniqKey="Li S">Sheng S. Li</name>
<affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Electrical and Computer Engineering, University of Florida, Gainesville, Florida 32611</s1>
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<wicri:cityArea>Department of Electrical and Computer Engineering, University of Florida, Gainesville</wicri:cityArea>
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<author><name sortKey="Singh, A" uniqKey="Singh A">A. Singh</name>
<affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Phillips Laboratories (PL/VTMR), Kirtland AFB, New Mexico 87117</s1>
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<author><name sortKey="Ho, P" uniqKey="Ho P">P. Ho</name>
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<term>Infrared detectors</term>
<term>Photoconductivity</term>
<term>Photodetectors</term>
<term>Semiconductor device noise</term>
<term>Semiconductor quantum wells</term>
<term>Semiconductor superlattices</term>
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<front><div type="abstract" xml:lang="en">A normal incidence p-type compressively strained layer superlattice (SL) In<sub>0.27</sub>
Ga<sub>0.73</sub>
As/Al<sub>0.15</sub>
Ga<sub>0.85</sub>
As quantum well infrared photodetector with a spectral response peak at 19.2 μm and a cutoff wavelength λ<sub>c</sub>
>20 μm under moderate background illumination have been demonstrated in this work. A responsivity of 50 mA/W and a gain-quantum efficiency product (ηg) of 0.32% at V<sub>b</sub>
=20 mV and T=40 K were obtained for this device. The device layer structure consists of four InGaAs/AlGaAs SL-absorber layers sandwiched by wide GaAs barrier layers. Results of the responsivity, dark current, noise, background photocurrent measurements, and analysis of the device performance are discussed. © 1998 American Institute of Physics.</div>
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<sZ>3 aut.</sZ>
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Ga<sub>0.73</sub>
As/Al<sub>0.15</sub>
Ga<sub>0.85</sub>
As quantum well infrared photodetector with a spectral response peak at 19.2 μm and a cutoff wavelength λ<sub>c</sub>
>20 μm under moderate background illumination have been demonstrated in this work. A responsivity of 50 mA/W and a gain-quantum efficiency product (ηg) of 0.32% at V<sub>b</sub>
=20 mV and T=40 K were obtained for this device. The device layer structure consists of four InGaAs/AlGaAs SL-absorber layers sandwiched by wide GaAs barrier layers. Results of the responsivity, dark current, noise, background photocurrent measurements, and analysis of the device performance are discussed. © 1998 American Institute of Physics.</s0>
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