Room temperature photovoltaic charging in photoemission from diamond
| Autor: | Bradford B. Pate, C. Bandis |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Condensed matter physics
Chemistry Photoemission spectroscopy business.industry Surface photovoltage Fermi level Diamond Surfaces and Interfaces Photovoltaic effect engineering.material Condensed Matter Physics Surfaces Coatings and Films symbols.namesake Band bending Depletion region X-ray photoelectron spectroscopy Materials Chemistry symbols engineering Optoelectronics business |
| Zdroj: | Surface Science. 345:L23-L27 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/0039-6028(95)00965-5 |
| Popis: | Photovoltaic effects in ultraviolet photoemission spectroscopy of in-situ hydrogenated diamond (111) are evaluated. Significant photovoltaic charging is found at room temperature under typical conditions of band bending for type IIb p-type semiconducting diamond. At low temperature, major shifts in the apparent band bending are observed. These measurements are consistent with predictions of Hecht [M.H. Hecht, J. Vac. Sci. Technol. B 8 (1990) 1018] based on restoring currents limited by carrier transport through the depletion region. Extra care must therefore be taken in analyzing photoelectron spectroscopy measurements to determine the band alignment of diamond surfaces relative to the Fermi level. |
| Databáze: | OpenAIRE |
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