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Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature

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Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature

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dc.contributor.author Sun, Handong
dc.contributor.author Makino, T.
dc.contributor.author Tuan, N. T.
dc.contributor.author Segawa, Y.
dc.contributor.author Tang, Z. K.
dc.contributor.author Wong, G. K. L.
dc.contributor.author Kawasaki, M.
dc.contributor.author Ohtomo, A.
dc.contributor.author Tamura, K.
dc.contributor.author Koinuma, H.
dc.date.accessioned 2009-11-13T06:03:07Z
dc.date.available 2009-11-13T06:03:07Z
dc.date.copyright 2000
dc.date.issued 2009-11-13T06:03:07Z
dc.identifier.citation Sun, H. D., Makino, T., Tuan, N. T., Segawa, Y., Tang, Z. K., Wong, G. K. L., et al. (2000). Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature. Applied Physics Letters., 77(26), 4250-4252.
dc.identifier.issn 0003-6951
dc.identifier.uri http://hdl.handle.net/10220/6154
dc.description.abstract The mechanism of ultraviolet stimulated emission was investigated in ZnO/ZnMgO multiquantum wells. Stimulated emission induced by exciton–exciton scattering occurred throughout a range of temperatures from 5 K to room temperature. At temperatures higher than 160 K, stimulated emission due to electron-hole plasma recombination was also observed with a higher excitation threshold than that of exciton–exciton scattering. The exciton binding energies of multiquantum wells were larger than that of bulk ZnO and increased with a decrease in the well widths. This enhancement of exciton binding energy is due to the quantum-confinement effect and is favorable for the stability of exciton states.
dc.format.extent 4 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 Stimulated emission induced by exciton–exciton scattering in ZnO/ZnMgO multiquantum wells up to room temperature
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=APPLAB000077000026004250000001
dc.identifier.doi http://dx.doi.org/10.1063/1.1333687
dc.description.version Published version

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