Published January 1, 2010
| Version v1
Journal article
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Three-color broadband asymmetric quantum well infrared photodetectors in long wavelength infrared range (LWIR)
Creators
- 1. Akdeniz Univ, Dept Secondary Educ Sci & Math, Fac Educ, TR-07058 Antalya, Turkey
- 2. Anadolu Univ, Dept Phys, TR-26470 Eskisehir, Turkey
- 3. Dokuz Eylul Univ, Dept Phys, Izmir, Turkey
Description
A theoretical investigation of a GaAs/AlGaAs-material-system-based four quantum well infrared detector structures consisting of ten periods of three asymmetric quantum well units are presented. Each quantum well in the units is sensitive to wavelengths of 8.75, 10, and 11.75 mu m, respectively. The effect of the barrier thicknesses on the responsivity spectra is discussed with respect to barrier transmissions under negative and positive bias voltages. Each detector structure shows voltage-tunable broadband and multicolor features in 8-12-mu m long wavelength infrared range (LWIR).
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