Broadband asymmetric quantum-well infrared photodetector in long-wavelength infrared range (LWIR)

Hostut M., Ergun Y., Sokmen I.

Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, İngiltere, 3 - 09 Eylül 2007, ss.130-131 identifier identifier

  • Basıldığı Şehir: Cardiff
  • Basıldığı Ülke: İngiltere
  • Sayfa Sayıları: ss.130-131


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 pro, 9.5 mu m and 10.8 mu m respectively. Device operation is based on inter-subband bound-to-bound transition. Asymmetry in the quantum welts is shown to give broad band responsivity spectrum at an operating bias.