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

Hostut M., Kilic A., Sakiroglu S., Ergun Y., Sokmen I.

IEEE PHOTONICS TECHNOLOGY LETTERS, cilt.23, sa.19, ss.1370-1372, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 23 Sayı: 19
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1109/lpt.2011.2160993
  • Dergi Adı: IEEE PHOTONICS TECHNOLOGY LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1370-1372
  • Anahtar Kelimeler: Dark current, dual-band infrared photodetector, photocurrent, voltage-tunable
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

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.