Characterization of impurities and defects in InSb and HgCdTe using novel magneto-optical techniques

Chris L. Littler

doi:10.1117/12.164943

7 December 1993 Characterization of impurities and defects in InSb and HgCdTe using novel magneto-optical techniques

Chris L. Littler

Proceedings Volume 2021, Growth and Characterization of Materials for Infrared Detectors; (1993) https://doi.org/10.1117/12.164943
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

Detection and identification of impurities and defects in semiconductor materials has long been a topic of technological importance. Of particular interest is the activation energy of the impurity/defect states. For narrow-gap materials magneto-optics is a technique of choice, since resonant transitions from impurity-to-band or band-to-impurity states allow for the precise determination of just these states. Two magneto-optical techniques, resonant magneto-optical and resonant impact ionization spectroscopy, have been successfully used to investigate intrinsic magnetoabsorption and shallow and deep impurity and defect levels in bulk InSb and in bulk and liquid-phase-epitaxy HgCdTe. In this paper, these magneto-optical techniques will be reviewed, concentrating on their versatility and sensitivity for the detection and identification of weak absorption process such as those expected when impurity and defect levels are involved. A discussion of the mechanisms and results for a variety of magneto- optical phenomena from both InSb and HgCdTe will be given and discussed.

Citation Download Citation

Chris L. Littler "Characterization of impurities and defects in InSb and HgCdTe using novel magneto-optical techniques", Proc. SPIE 2021, Growth and Characterization of Materials for Infrared Detectors, (7 December 1993); https://doi.org/10.1117/12.164943

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