High-Quality (211)B CdTe on (211)Si Substrates Using Metalorganic Vapor-Phase Epitaxy

High-quality (211)B CdTe buffer layers are required during Hg 1− x Cd x Te heteroepitaxy on Si substrates. In this study, direct metalorganic vapor-phase epitaxy (MOVPE) of (211)B CdTe on Si, as well as CdTe on Si using intermediate Ge and ZnTe layers, has been achieved. Tertiary butyl arsine was us...

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Veröffentlicht in:Journal of electronic materials 2011-08, Vol.40 (8), p.1790-1794
Hauptverfasser: Rao, S. R., Shintri, S. S., Markunas, J. K., Jacobs, R. N., Bhat, I. B.
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Sprache:eng
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Zusammenfassung:High-quality (211)B CdTe buffer layers are required during Hg 1− x Cd x Te heteroepitaxy on Si substrates. In this study, direct metalorganic vapor-phase epitaxy (MOVPE) of (211)B CdTe on Si, as well as CdTe on Si using intermediate Ge and ZnTe layers, has been achieved. Tertiary butyl arsine was used as a precursor to enable As surfactant action during CdTe MOVPE on Si. The grown CdTe/Si films display a best x-ray diffraction rocking-curve full-width at half-maximum of 64 arc-s and a best Everson etch pit density of 3 × 10 5  cm −2 . These values are the best reported for MOVPE-grown (211)B CdTe/Si and match state-of-the-art material grown using molecular-beam epitaxy.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-011-1586-0