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Direct experimental...
Direct experimental evidence for unusual effects of hydrogen on the electronic and vibrational properties of GaNxP1−x alloys : a proof for a general property of dilute nitrides
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- Buyanova, Irina, 1960- (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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- Izadifard, Morteza, 1965- (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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- Ivanov, Ivan Gueorguiev, 1955- (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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- Birch, Jens, 1960- (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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- Chen, Weimin, 1959- (author)
- Linköpings universitet,Institutionen för fysik, kemi och biologi,Tekniska högskolan
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- Felici, M. (author)
- Dipartimento di Fisica, Università di Roma “La Sapienza,” Roma, Italy
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- Polimeni, A. (author)
- Dipartimento di Fisica, Università di Roma “La Sapienza,” Roma, Italy
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- Capizzi, M. (author)
- Dipartimento di Fisica, Università di Roma “La Sapienza,” Roma, Italy
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- Hong, Y. G. (author)
- Department of Electrical and Computer Engineering, University of California, La Jolla, California, USA
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- Xin, H. P. (author)
- Department of Electrical and Computer Engineering, University of California, La Jolla, California, USA
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- Tu, C. W. (author)
- Department of Electrical and Computer Engineering, University of California, La Jolla, California, USA
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(creator_code:org_t)
- 2004
- 2004
- English.
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In: Physical Review B Condensed Matter. - 0163-1829 .- 1095-3795. ; 70:24, s. 245215-245219
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
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- Direct experimental evidence for dramatic effects of hydrogen incorporation on the electronic structure and lattice properties of GaNxP1−x alloys is presented. By employing photoluminescence excitation spectroscopy, postgrowth hydrogenation is shown to reopen the band gap of the GaNP alloys and to efficiently reduce the N-induced coupling between the conduction band states. By Raman spectroscopy, these effects are shown to be accompanied by hydrogen-induced breaking of the Ga-P bond in the alloy, evident from disappearance of the corresponding vibrational mode. According to the performed Raman and x-ray diffraction measurements, the hydrogenation is also found to cause a strong expansion of the GaNP lattice, which changes the sign of strain from tensile in the as-grown GaNP epilayers to compressive in the posthydrogenated structures, due to the formation of complexes between N and H.
Keyword
- NATURAL SCIENCES
- NATURVETENSKAP
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- ref (subject category)
- art (subject category)
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Buyanova, Irina, ...
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Izadifard, Morte ...
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Ivanov, Ivan Gue ...
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Birch, Jens, 196 ...
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Chen, Weimin, 19 ...
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Felici, M.
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Polimeni, A.
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Capizzi, M.
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Hong, Y. G.
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Xin, H. P.
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Tu, C. W.
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Physical Review ...
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Linköping University