Optical and electrical properties of iodine-doped HgCdTe alloys and superlattices grown by metalorganic molecular beam epitaxy

Christopher J. Summers; Ashesh Parikh; Tuyen K. Tran; Jens Wolfgang Tomm; P. Schafer; Nancy C. Giles; S. D. Pearson; Rudolph G. Benz II; Brent K. Wagner; Robert N. Bicknell-Tassius

doi:10.1117/12.218202

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1 September 1995 Optical and electrical properties of iodine-doped HgCdTe alloys and superlattices grown by metalorganic molecular beam epitaxy

Christopher J. Summers, Ashesh Parikh, Tuyen K. Tran, Jens Wolfgang Tomm, P. Schafer, Nancy C. Giles, S. D. Pearson, Rudolph G. Benz II, Brent K. Wagner, Robert N. Bicknell-Tassius

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Proceedings Volume 2554, Growth and Characterization of Materials for Infrared Detectors II; (1995) https://doi.org/10.1117/12.218202
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

The electrical and optical properties of iodine doped n-type HgCdTe alloys and superlattices grown by metalorganic molecular beam epitaxy using ethyliodide are reviewed. The rationale for the use of iodine rather than indium as the dopant species and the incorporation kinetics of iodine at the growth surface are discussed. The electrical and optical properties of iodine- doped CdTe and HgCdTe (x equals 0.24) are presented for carrier concentrations between 10¹⁵ and 10¹⁸ cm^-3, as determined by Hall effect measurements and low- and room-temperature photoluminescence spectroscopy. These samples show strong room temperature excitonic effects due to free exciton and band to band recombination as determined by photoluminescence excitation spectroscopy. The electrical and optical properties of iodine-doped HgCdTe-CdTe superlattices also are discussed based on magnetoluminescence measurements in tilted magnetic fields of up to 7 Tesla in Voigt and Faraday geometry.

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Christopher J. Summers, Ashesh Parikh, Tuyen K. Tran, Jens Wolfgang Tomm, P. Schafer, Nancy C. Giles, S. D. Pearson, Rudolph G. Benz II, Brent K. Wagner, and Robert N. Bicknell-Tassius "Optical and electrical properties of iodine-doped HgCdTe alloys and superlattices grown by metalorganic molecular beam epitaxy", Proc. SPIE 2554, Growth and Characterization of Materials for Infrared Detectors II, (1 September 1995); https://doi.org/10.1117/12.218202

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