Generation-recombination noise in multiple quantum well infrared photodetectors

Details Generation-recombination noise in multiple quantum well infrared photodetectors Generation-recombination noise in multiple quantum well infrared photodetectors

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999spie.3629..121e&link_type=abstract

Proc. SPIE Vol. 3629, p. 121-128, Photodetectors: Materials and Devices IV, Gail J. Brown; Manijeh Razeghi; Eds.

Computer Science

1

Scientific paper

Generation-recombination noise in quantum well infrared photodetectors is considered theoretically. A numerical model and procedure for noise power calculation is proposed. It is shown that the transient response current due to extra charge generation from a QW is not described by a simple exponential model. Transient current is composed of fast and slow components. The autocorrelation coefficient is also non- exponential, having two components with different time scales and amplitudes. The noise power spectral density has a strong frequency dispersion at low frequencies, due to the modulation of the injection current from the emitter. Analytical model for non-equilibrium high-frequency noise is proposed.

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