Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates
The excitonic properties of high-quality ZnO/Zn0.88Mg0.12O multiquantum wells grown by laser-molecular-beam epitaxy were investigated using temperature-dependent optical absorption spectra from 5 K to room temperature. The strength of exciton-longitudinal-optical (LO) –phonon coupling was deduced fr...
| Main Authors: | , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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2009
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| Online Access: | https://hdl.handle.net/10356/101293 http://hdl.handle.net/10220/6155 http://scitation.aip.org.ezlibproxy1.ntu.edu.sg/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000078000017002464000001 |
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| author | Sun, Handong Makino, T. Tuan, N. T. Segawa, Y. Kawasaki, M. Ohtomo, A. Tamura, K. Koinuma, H. |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Sun, Handong Makino, T. Tuan, N. T. Segawa, Y. Kawasaki, M. Ohtomo, A. Tamura, K. Koinuma, H. |
| author_sort | Sun, Handong |
| collection | NTU |
| description | The excitonic properties of high-quality ZnO/Zn0.88Mg0.12O multiquantum wells grown by laser-molecular-beam epitaxy were investigated using temperature-dependent optical absorption spectra from 5 K to room temperature. The strength of exciton-longitudinal-optical (LO) –phonon coupling was deduced from the temperature dependence of the linewidth of the fundamental excitonic peak. Effective reduction of the exciton (LO) -phonon coupling with decreasing the well width was observed, which is consistent with the confinement-induced enhancement of the exciton binding energy. The thermal shift of the lowest excitonic energy is independent of well width, indicating that the strain effect is negligible for this material. |
| first_indexed | 2024-10-01T04:42:09Z |
| format | Journal Article |
| id | ntu-10356/101293 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:42:09Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/1012932023-02-28T19:37:55Z Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates Sun, Handong Makino, T. Tuan, N. T. Segawa, Y. Kawasaki, M. Ohtomo, A. Tamura, K. Koinuma, H. School of Physical and Mathematical Sciences DRNTU::Science::Physics::Optics and light The excitonic properties of high-quality ZnO/Zn0.88Mg0.12O multiquantum wells grown by laser-molecular-beam epitaxy were investigated using temperature-dependent optical absorption spectra from 5 K to room temperature. The strength of exciton-longitudinal-optical (LO) –phonon coupling was deduced from the temperature dependence of the linewidth of the fundamental excitonic peak. Effective reduction of the exciton (LO) -phonon coupling with decreasing the well width was observed, which is consistent with the confinement-induced enhancement of the exciton binding energy. The thermal shift of the lowest excitonic energy is independent of well width, indicating that the strain effect is negligible for this material. Published version 2009-11-13T06:16:45Z 2019-12-06T20:36:13Z 2009-11-13T06:16:45Z 2019-12-06T20:36:13Z 2001 2001 Journal Article Sun, H. D., Makino, T., Tuan, N. T., Segawa, Y., Kawasaki, M., Ohtomo, A., et al. (2001). Temperature dependence of excitonic absorption spectra in ZnOÕZn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates. Applied Physics Letters., 78(17), 2464-2466. 0003-6951 https://hdl.handle.net/10356/101293 http://hdl.handle.net/10220/6155 http://scitation.aip.org.ezlibproxy1.ntu.edu.sg/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000078000017002464000001 10.1063/1.1367300 en Applied Physics Letters. Applied Physics Letters © copyright 2001 American Institute of Physics. The journal's website is located at http://apl.aip.org/. 4 p. application/pdf |
| spellingShingle | DRNTU::Science::Physics::Optics and light Sun, Handong Makino, T. Tuan, N. T. Segawa, Y. Kawasaki, M. Ohtomo, A. Tamura, K. Koinuma, H. Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title | Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title_full | Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title_fullStr | Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title_full_unstemmed | Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title_short | Temperature dependence of excitonic absorption spectra in ZnO/Zn0.88Mg0.12O multiquantum wells grown on lattice-matched substrates |
| title_sort | temperature dependence of excitonic absorption spectra in zno zn0 88mg0 12o multiquantum wells grown on lattice matched substrates |
| topic | DRNTU::Science::Physics::Optics and light |
| url | https://hdl.handle.net/10356/101293 http://hdl.handle.net/10220/6155 http://scitation.aip.org.ezlibproxy1.ntu.edu.sg/getabs/servlet/GetabsServlet?prog=normal&id=APPLAB000078000017002464000001 |
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