Broadband asymmetric quantum-well infrared photodetector in Long-Wavelength Infrared Range (LWIR)

Hostut M., ERGÜN Y., Sokmen I.

Joint 32nd International Conference on Infrared and Millimetre Waves, and 15th International Conference on Terahertz Electronics, IRMMW-THz2007, Cardiff, İngiltere, 3 - 07 Eylül 2007, ss.134-136 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/icimw.2007.4516427
  • Basıldığı Şehir: Cardiff
  • Basıldığı Ülke: İngiltere
  • Sayfa Sayıları: ss.134-136
  • Anahtar Kelimeler: Infrared detectors, Intersub-band, Photodetectors, Quantum wells, QWIP
  • Anadolu Üniversitesi Adresli: Evet

Özet

A theoretical investigation of a GaAs-AlGaAs infrared detector consisting of three asymmetric quantum wells is presented. Each quantum well is sensitive to yield absorption and a photoresponse at peak wavelengths of 8 μm, 9.5 μm and 10.8 μm respectively. Device operation is based on inter-subband bound-to-bound transition. Asymmetry in the quantum wells is shown to give broad band responsivity spectrum at an operating bias.