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Room-temperature luminescence of excitons in ZnO/(Mg,Zn)O multiple-quantum wells on lattice-matched substrates.

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Room-temperature luminescence of excitons in ZnO/(Mg,Zn)O multiple-quantum wells on lattice-matched substrates.

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dc.contributor.author Makino, T.
dc.contributor.author Chia, C. H.
dc.contributor.author Tuan, N. T.
dc.contributor.author Sun, Handong.
dc.contributor.author Segawa, Y.
dc.contributor.author Kawasaki, M.
dc.contributor.author Ohtomo, A.
dc.contributor.author Tamura, K.
dc.contributor.author Koinuma, H.
dc.date.accessioned 2009-11-13T01:51:38Z
dc.date.available 2009-11-13T01:51:38Z
dc.date.copyright 2000
dc.date.issued 2009-11-13T01:51:38Z
dc.identifier.citation Makino, T., Chia, C. H., Tuan, N. T., Sun, H. D., Segawa, Y., Kawasaki, M., et al. (2000). Room-temperature luminescence of excitons in ZnO/(Mg, Zn)O multi-quantum wells on lattice-matched substrates. Applied Physics Letters, 77(7), 975-977.
dc.identifier.issn 0003-6951
dc.identifier.uri http://hdl.handle.net/10220/6145
dc.description.abstract We report on the optical properties of ZnO/(Mg, Zn)O multiple quantum wells (MQWs) on lattice-matched ScAlMgO4 substrates fabricated by laser molecular-beam epitaxy. As the well layer thickness decreased down to 7 Å, the photoluminescence (PL) and absorption peaks showed a systematic blueshift, consistent with the quantum-size effect. Moreover, a bright PL of free excitons could be observed even at room temperature. As a result, the PL could be tuned in the energy range of 3.3–3.6 eV by choosing the appropriate barrier height and well layer thickness. The widest tunability on the room-temperature luminescence of the excitons could be attained on the basis of the ZnO quantum structure. These favorable properties could not be attained in the MQWs on lattice-mismatched sapphire substrates.
dc.format.extent 3 p.
dc.language.iso en
dc.relation.ispartofseries Applied Physics Letters.
dc.rights Applied Physics Letters © copyright 2000 American Institute of Physics. The journal's website is located at http://apl.aip.org/.
dc.subject DRNTU::Science::Physics.
dc.title Room-temperature luminescence of excitons in ZnO/(Mg,Zn)O multiple-quantum wells on lattice-matched substrates.
dc.type Journal Article
dc.contributor.school School of Physical and Mathematical Sciences
dc.identifier.openurl http://scitation.aip.org.ezlibproxy1.ntu.edu.sg/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000077000007000975000001
dc.identifier.doi http://dx.doi.org/10.1063/1.1289066
dc.description.version Published version

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