Temperature-dependent Raman scattering in N–In codoped p-type ZnO thin films
We have carried out a detailed temperature-dependent Raman scattering investigation on coupled longitudinal-optical phonon-plasmon modes in N-In codoped p-type ZnO thin films with different hole densities. In combination with the theoretical analysis for the temperature-dependent frequencies, linewi...
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| Veröffentlicht in: | Journal of physics. D, Applied physics Applied physics, 2007-12, Vol.40 (23), p.7471-7474 |
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| container_end_page | 7474 |
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| container_issue | 23 |
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| container_title | Journal of physics. D, Applied physics |
| container_volume | 40 |
| creator | Kong, J F Ye, H B Zhang, D M Shen, W Z Zhao, J L Li, X M |
| description | We have carried out a detailed temperature-dependent Raman scattering investigation on coupled longitudinal-optical phonon-plasmon modes in N-In codoped p-type ZnO thin films with different hole densities. In combination with the theoretical analysis for the temperature-dependent frequencies, linewidths, and lifetimes, we have revealed an asymmetrical decay process with frequencies near 450 and 130 cm-1, an increasing anharmonic effect with hole density, as well as a decreasing lifetime with enhanced anharmonicity. The variation in the relative contribution from three- and four-phonon processes can be further attributed to the diversification of the local phonon density of states due to N-In codoping. |
| doi_str_mv | 10.1088/0022-3727/40/23/032 |
| format | Article |
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D, Applied physics</title><description>We have carried out a detailed temperature-dependent Raman scattering investigation on coupled longitudinal-optical phonon-plasmon modes in N-In codoped p-type ZnO thin films with different hole densities. In combination with the theoretical analysis for the temperature-dependent frequencies, linewidths, and lifetimes, we have revealed an asymmetrical decay process with frequencies near 450 and 130 cm-1, an increasing anharmonic effect with hole density, as well as a decreasing lifetime with enhanced anharmonicity. 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In combination with the theoretical analysis for the temperature-dependent frequencies, linewidths, and lifetimes, we have revealed an asymmetrical decay process with frequencies near 450 and 130 cm-1, an increasing anharmonic effect with hole density, as well as a decreasing lifetime with enhanced anharmonicity. The variation in the relative contribution from three- and four-phonon processes can be further attributed to the diversification of the local phonon density of states due to N-In codoping.</abstract><cop>Bristol</cop><pub>IOP Publishing</pub><doi>10.1088/0022-3727/40/23/032</doi><tpages>4</tpages></addata></record> |
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| source | Institute of Physics Journals |
| subjects | Condensed matter: structure, mechanical and thermal properties Exact sciences and technology Lattice dynamics Phonons in low-dimensional structures and small particles Physics |
| title | Temperature-dependent Raman scattering in N–In codoped p-type ZnO thin films |
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