Voltage Tunable Dual-Band Quantum-Well Infrared Photodetector for Third-Generation Thermal Imaging

HOŞTUT M., Kilic A., ŞAKİROĞLU S., Ergun Y., SÖKMEN İ.

IEEE PHOTONICS TECHNOLOGY LETTERS, vol.23, no.19, pp.1370-1372, 2011 (SCI-Expanded, Scopus)

  • Publication Type: Article / Article
  • Volume: 23 Issue: 19
  • Publication Date: 2011
  • Doi Number: 10.1109/lpt.2011.2160993
  • Journal Name: IEEE PHOTONICS TECHNOLOGY LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1370-1372
  • Keywords: Dark current, dual-band infrared photodetector, photocurrent, voltage-tunable
  • Akdeniz University Affiliated: Yes

Abstract

We investigate the theoretical calculations of the voltage tunable dual-band quantum-well infrared photodetector (QWIP) in the long and very long wavelength infrared range (LWIR and VLWIR). The detector consists of two serially connected GaAs/AlGaAs stacks which have spectral responses of 8.4- and 14-mu m wavelengths, respectively. The peak responsivity wavelength of the stacks shifts from 8.4 to 14 mu m as the bias voltage is increased.

We investigate the theoretical calculations of the voltage tunable dual-band quantum-well infrared photodetector (QWIP) in the long and very long wavelength infrared range (LWIR and VLWIR). The detector consists of two serially connected GaAs/AlGaAs stacks which have spectral responses of 8.4- and 14-mu m wavelengths, respectively. The peak responsivity wavelength of the stacks shifts from 8.4 to 14 mu m as the bias voltage is increased.