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Long Wavelength Shifting and Broadening of Quantum Well Infrared Photodetector Response Via Rapid Thermal Annealing
Published online by Cambridge University Press: 10 February 2011
A shift in the peak response wavelength and a broadening of the photoresponse spectrum is demonstrated for intersubband absorption in n-doped GaAs/AIGaAs multiple quantum well detectors following intermixing of the well and barrier layers during rapid thermal annealing. In general, a decrease in performance is observed for the RTA QWIPs when compared to the as-grown detectors. The peak absolute response of the annealed QWIPs is lower by almost a factor of four, which results in corresponding decrease in quantum efficiency. In addition, the noise performance results in a detectivity which is five times lower than that of QWIPs fabricated from as-grown structures.
- Research Article
- MRS Online Proceedings Library (OPL) , Volume 421: Symposium D – Compound Semiconductor Electronics and Photonics , 1996 , 355
- Copyright © Materials Research Society 1996