Study of Boron Implantation in CdTe


The effect of large dose boron implantation in single crystal CdTe has been investigated by Rutherford Backscattering Spectrometry with channeling (RBS), double crystal x-ray diffraction (DCD) and photoreflectance spectroscopy (PR). Comparisons are made with the results of identical B implantations of Si and GaAs crystals. Multiple energy implantations were performed at room temperature and liquid nitrogen temperature with total doses up to 1.5×1016 B+ ions/cm2. The implanted B distribution was measured with neutron depth profiling (NDP) and found to agree well with Monte-Carlo ion range calculations. The RBS results showed that the CdTe crystals had not been rendered completely amorphous even for the highest dose implantation, unlike GaAs and Si. Furthermore, the DCD results showed little implantation induced structure in the rocking curves from the implanted CdTe crystals, in contrast to GaAs. The consequences of annealing at 500°C in an attempt to regrow the crystal structure are also discussed.

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Jamieson, D.N., Bowman, R.C., Adams, P.M. et al. Study of Boron Implantation in CdTe. MRS Online Proceedings Library 100, 299 (1987).

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