Hydrogen passivation of Se and Te in AlSb
- Lawrence Berkeley National Laboratory and University of California, Berkeley, California 94720 (United States)
- Center for Advanced Materials, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
Using infrared absorption spectroscopy we have observed local vibrational modes (LVM{close_quote}s) arising from {ital DX}-hydrogen complex in AlSb. Hydrogen was diffused into bulk AlSb:Se and AlSb:Te by annealing in sealed quartz ampoules with either hydrogen gas or methanol (CH{sub 3}OH). The persistent photoabsorption of the {ital DX}-like Se donor is significantly reduced after hydrogenation. In hydrogenated AlSb:Se, we attribute the LVM peaks at 1608.6 and 1615.7 cm{sup {minus}1} to hydrogen stretch modes. Deuterated AlSb:Se has only one stretch mode at 1173.4 cm{sup {minus}1}. The second, third, and fourth harmonics of the wag modes are observed and show splittings consistent with {ital C}{sub 3{ital v}} symmetry. In AlSb:Te, we find a hydrogen stretch mode at 1599.0 cm{sup {minus}1} and a deuterium mode at 1164.4 cm{sup {minus}1}. We propose a model in which the hydrogen attaches to an aluminum in a [111] antibonding orientation. {copyright} {ital 1996 The American Physical Society.}
- DOE Contract Number:
- FG08-94NV11627
- OSTI ID:
- 285605
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 24 Vol. 53; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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