Observation of nonequilibrium longitudinal optical phonons in InN and its implications
Identifieur interne : 00A477 ( Main/Repository ); précédent : 00A476; suivant : 00A478Observation of nonequilibrium longitudinal optical phonons in InN and its implications
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Abstract
Nonequilibrium longitudinal optical phonons in a high quality, single crystal wurtzite structure InN sample have been studied by picosecond Raman spectroscopy. Our experimental results demonstrate that the band gap of InN cannot be around 1.89 eV; but are consistent with a band gap of about 0.8 eV. In addition, they disprove the idea that 0.8 eV luminescence observed recently in InN is due to deep level radiative emission in InN. © 2004 American Institute of Physics.
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Liang</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Arizona</region></placeName><wicri:cityArea>Department of Physics and Astronomy, Arizona State University, Tempe</wicri:cityArea></affiliation><affiliation wicri:level="2"><inist:fA14 i1="02"><s1>Department of Electrical Engineering, Arizona State University, Tempe, Arizona 85287</s1></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Arizona</region></placeName><wicri:cityArea>Department of Electrical Engineering, Arizona State University, Tempe</wicri:cityArea></affiliation></author><author><name sortKey="Tsen, K T" uniqKey="Tsen K">K. T. Tsen</name><affiliation wicri:level="2"><inist:fA14 i1="01"><s1>Department of Physics and Astronomy, Arizona State University, Tempe, Arizona 85287</s1><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country xml:lang="fr">États-Unis</country><placeName><region type="state">Arizona</region></placeName><wicri:cityArea>Department of Physics and Astronomy, Arizona State University, Tempe</wicri:cityArea></affiliation></author><author><name sortKey="Ferry, D K" uniqKey="Ferry D">D. K. 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