Optical characterization of Zn(1-x)Cd(x)O alloys grown by molecular-beam epitaxy

Buyanova, Irina,1960-Linköpings universitet,Tekniska högskolan,Halvledarmaterial (author)

We have carried out comprehensive optical studies to evaluate structural and bandgap properties of Zn1-xCdxO alloys with x{less than or equalto}0.17 grown by molecular beam epitaxy. High crystalline quality ofthe alloys was concluded from cathodoluminescence measurements. Based on absorptionand reflectance measurements, the compositional dependence of the bandgap energyof ZnCdO, estimated without taking into account excitonic effects, wasfound to follow the trend Eg(x)=3.28-2.23x+0.45x2. Degradation in the alloyquality due to possible phase separation was found to causedeviations from this trend, evident from a more rapid redshift of the absorption edge. Effects of Cd incorporation onthe variation of the bandgap energies with temperature are alsodiscussed.

Wang, Xingjun,1972-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)xinwa58 (author)
Chen, Weimin,1959-Linköpings universitet,Tekniska högskolan,Halvledarmaterial(Swepub:liu)weich55 (author)
Izadifard, M.Department of Physics, Shahrood University of Technology, Shahrood, Iran (author)
Norton, D.P.Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA (author)
Pearton, S.J.Department of Materials Science and Engineering, University of Florida, Gainesville, FL, USA (author)
Osinsky, A.SVT Associates, Eden Prairie, MN, USA (author)
Dong, J.W.SVT Associates, Eden Prairie, MN, USA (author)
Dabiran, A.SVT Associates, Eden Prairie, MN, USA (author)
Linköpings universitetTekniska högskolan (creator_code:org_t)

By the author/editor: Buyanova, Irina, ...; Wang, Xingjun, 1 ...; Chen, Weimin, 19 ...; Izadifard, M.; Norton, D.P.; Pearton, S.J.; show more...; Osinsky, A.; Dong, J.W.; Dabiran, A.; show less...

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