Advantages of the HgTe‐CdTe superlattice as an infrared detector material
作者:
D. L. Smith,
T. C. McGill,
J. N. Schulman,
期刊:
Applied Physics Letters
(AIP Available online 1983)
卷期:
Volume 43,
issue 2
页码: 180-182
ISSN:0003-6951
年代: 1983
DOI:10.1063/1.94272
出版商: AIP
数据来源: AIP
摘要:
The HgTe‐CdTe superlattice is found to exhibit properties superior to those of the (Hg, Cd)Te alloy as an infrared detector material. A calculation shows that the superlattice tunneling length is shorter than that of the alloy with the same band gap. For a given cutoff wavelength tolerance, we find that less fractional precision is needed in the superlattice control parameter (layer thicknesses) than in the alloy control parameter (composition). Also,p‐side diffusion currents are expected to be reduced due to the larger superlattice electron effective mass.
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