ISSN:
1434-6036
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract Doping superlattices of PbTe are prepared by a modified Hot-Wall technique. At 80 K, some of these structures exhibit a photoconductive detectivity close to the theoretical limit ofD *≈1011 cmHz1/2W−1 at 6 μm wavelength. We show from time resolved electron-beam-induced-current investigations that the excellent photoresponse is caused by a lifetime enhancement by nearly two orders of magnitude. The latter value is in good agreement with theoretical estimates.The influence of contact barriers is discussed.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01304115
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