Detection wavelength and device performance tuning of InAs QDIPs with thin AlGaAs layers

Implementation of an algorithmic spectrometer using Quantum Dot Infrared Photodetectors

“…4. The high responsivity and low dark current in QDIP0 contributed to a very high maximum D Ã of 6.7 Â 10 10 cm Hz 1/2 /W, comparing very favourably to most QDIP D Ã values reported [5]. A high D Ã is essential for use with the algorithmic spectrometer since it relates directly to the signal to noise ratio (SNR), with a high SNR allowing imaging with a narrow spectral resolution.…”