Zero-bias offsets in I-V characteristics of the staircase type quantum well infrared photodetectors


Nutku F. , Erol A. , Arikan M. C. , Ergun Y.

APPLIED SURFACE SCIENCE, cilt.318, ss.95-99, 2014 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 318
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1016/j.apsusc.2014.01.054
  • Dergi Adı: APPLIED SURFACE SCIENCE
  • Sayfa Sayıları: ss.95-99

Özet

In this work, observed zero-bias offsets in I-V characteristics and differences in J-V characteristics of staircase quantum well infrared photodetectors were investigated. Temperature and voltage sweep rate dependence of the zero-bias offsets were studied on mesa structures shaped in different diameters. Furthermore, effect of mesa diameter on J-V characteristics was investigated. The temperature, initial bias voltage and voltage sweep rate dependence of the zero-bias offsets were explained by a qualitative model, which is based on a RC equivalent circuit of the quantum well infrared photodetector. (C) 2014 Elsevier B.V. All rights reserved.