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High temperature operation of long-wavelength infrared superlattice detector with supressed dark current

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8 Author(s)
Hill, C.J. ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Soibel, A. ; Ting, D.Z.-Y. ; Keo, S.A.
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Superlattice (SL) photodetectors operating with a cutoff wavelength of lambda = 10 mum are demonstrated to respond up to a temperature of T = 140 K with a nonunity gain enabling a high responsivity of Rfr = 25 A/W. The improvement in detector performance is achieved by the optimisation of SL heterodiode design in which suppression of dark current is realised without significant impact on the photocurrent.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 21 )