Improving the method of calculating electronic properties of narrow bandgap semiconductors
Abstract
A previously developed code for calculating the mobility of charge carriers in narrow bandgap semiconductors does not predict the correct temperature dependence in all cases. It is thought that this is due to the way the electronic screening of the carriers is treated in the model. The objective of this research is to improve the handling of the screening by going beyond the current first Born approximation. Much of this work is directly related to the alloy semiconductor Hg sub 1-xCd sub xTe which is important for infrared detectors and is a good candidate for microgravity crystal growth. The principal conclusion, so far, is that the major difficulty is probably the treatment of short range screening at higher temperatures.
- Publication:
-
In NASA. Marshall Space Flight Center
- Pub Date:
- November 1987
- Bibcode:
- 1987asee.nasaQ....P
- Keywords:
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- Charge Carriers;
- Electrons;
- Energy Gaps (Solid State);
- Narrowband;
- Semiconductors (Materials);
- Born Approximation;
- Crystal Growth;
- Infrared Detectors;
- Mercury Cadmium Tellurides;
- Reduced Gravity;
- Space Commercialization;
- Solid-State Physics