Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2
High resolution valence- and core-level photoemission spectra of undoped and 3% Sb-doped SnO2 are presented. Conduction-band occupation due to Sb doping in SnO2 leads to a shift of valence-band features to high binding energy. However, the shift is less than the width of the occupied part of the con...
| Autors principals: | , , , |
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| Format: | Journal article |
| Idioma: | English |
| Publicat: |
1999
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| _version_ | 1826267557479317504 |
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| author | Egdell, R Rebane, J Walker, T Law, D |
| author_facet | Egdell, R Rebane, J Walker, T Law, D |
| author_sort | Egdell, R |
| collection | OXFORD |
| description | High resolution valence- and core-level photoemission spectra of undoped and 3% Sb-doped SnO2 are presented. Conduction-band occupation due to Sb doping in SnO2 leads to a shift of valence-band features to high binding energy. However, the shift is less than the width of the occupied part of the conduction band. This is attributed to a shrinkage of the bulk band gap with doping, arising from an attractive dopant electron interaction and screening of the Coulomb repulsion between valence and conduction electrons. Core-level spectra provide evidence for strong screening by the conduction electron gas in 3% Sb-doped SnO2, giving rise to "screened" and "unscreened" final-state peaks in photoemission. The dominant screening response involves excitation of conduction electron plasmons. ©1999 The American Physical Society. |
| first_indexed | 2024-03-06T20:56:02Z |
| format | Journal article |
| id | oxford-uuid:3948d94d-7eb4-48fb-901e-deae055ddf6d |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T20:56:02Z |
| publishDate | 1999 |
| record_format | dspace |
| spelling | oxford-uuid:3948d94d-7eb4-48fb-901e-deae055ddf6d2022-03-26T13:54:44ZCompetition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:3948d94d-7eb4-48fb-901e-deae055ddf6dEnglishSymplectic Elements at Oxford1999Egdell, RRebane, JWalker, TLaw, DHigh resolution valence- and core-level photoemission spectra of undoped and 3% Sb-doped SnO2 are presented. Conduction-band occupation due to Sb doping in SnO2 leads to a shift of valence-band features to high binding energy. However, the shift is less than the width of the occupied part of the conduction band. This is attributed to a shrinkage of the bulk band gap with doping, arising from an attractive dopant electron interaction and screening of the Coulomb repulsion between valence and conduction electrons. Core-level spectra provide evidence for strong screening by the conduction electron gas in 3% Sb-doped SnO2, giving rise to "screened" and "unscreened" final-state peaks in photoemission. The dominant screening response involves excitation of conduction electron plasmons. ©1999 The American Physical Society. |
| spellingShingle | Egdell, R Rebane, J Walker, T Law, D Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title | Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title_full | Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title_fullStr | Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title_full_unstemmed | Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title_short | Competition between initial- and final-state effects in valence- and core-level x-ray photoemission of Sb-doped SnO2 |
| title_sort | competition between initial and final state effects in valence and core level x ray photoemission of sb doped sno2 |
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