Exciton Confinement in InGaN/GaN Cylindrical Quantum Wires
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| Format: | Artículo científico |
| Langue: | en |
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Sociedade Brasileira de Física
2004
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| _version_ | 1876473043604209664 |
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| author | E. F. da Silva |
| author_facet | E. F. da Silva |
| contents | Exciton Confinement in InGaN/GaN Cylindrical Quantum Wires E. F. da Silva E. W. S. Caetano V. N. Freire G. A. Farias Física, Astronomía y Matemáticas We investigate the confined exciton properties in InGaN/GaN cylindrical quantum wires. We have solvednumerically Schr¨odinger-like equations in the effective mass approximation and have found the energy levelsand wavefunctions for confined electrons and holes, using these results to calculate variationally the confinedexciton energy. A comparison was made between graded and abrupt quantum wires, showing that the existenceof smooth interfaces enhances the confined exciton energy if the wire radius is smaller than 50 ° A. We concludethat the existence of graded interfaces must be considered for a better description of the exciton based opticalproperties of InGaN/GaN quantum wires. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434449 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2B Vol.34 |
| format | Artículo científico |
| id | redalyc_46434449 |
| institution | Redalyc |
| language | en |
| publishDate | 2004 |
| publisher | Sociedade Brasileira de Física |
| spellingShingle | Exciton Confinement in InGaN/GaN Cylindrical Quantum Wires E. F. da Silva Física, Astronomía y Matemáticas Exciton Confinement in InGaN/GaN Cylindrical Quantum Wires E. F. da Silva E. W. S. Caetano V. N. Freire G. A. Farias Física, Astronomía y Matemáticas We investigate the confined exciton properties in InGaN/GaN cylindrical quantum wires. We have solvednumerically Schr¨odinger-like equations in the effective mass approximation and have found the energy levelsand wavefunctions for confined electrons and holes, using these results to calculate variationally the confinedexciton energy. A comparison was made between graded and abrupt quantum wires, showing that the existenceof smooth interfaces enhances the confined exciton energy if the wire radius is smaller than 50 ° A. We concludethat the existence of graded interfaces must be considered for a better description of the exciton based opticalproperties of InGaN/GaN quantum wires. 2004 artículo científico 0103-9733 https://www.redalyc.org/articulo.oa?id=46434449 en http://www.redalyc.org/revista.oa?id=464 Brazilian Journal of Physics application/pdf Sociedade Brasileira de Física Brazilian Journal of Physics (Brasil) Num.2B Vol.34 |
| title | Exciton Confinement in InGaN/GaN Cylindrical Quantum Wires |
| topic | Física, Astronomía y Matemáticas |
| url | https://www.redalyc.org/articulo.oa?id=46434449 |