| Conţinutul numărului revistei |
| Articolul precedent |
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 SM ISO690:2012TIGINYANU, Ion, IRMER, Gert, MONECKE, Jochen. Micro-Raman-scattering study of surface-related phonon modes in porous GaP. In: Physical Review B - Condensed Matter and Materials Physics, 1997, vol. 55, pp. 6739-6742. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.55.6739 |
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 Physical Review B - Condensed Matter and Materials Physics |
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| Volumul 55 / 1997 / ISSN 1098-0121 /ISSNe 1550-235X | ||||||
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| DOI:https://doi.org/10.1103/PhysRevB.55.6739 | ||||||
| Pag. 6739-6742 | ||||||
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| Rezumat | ||||||
Porous GaP layers prepared by electrochemical dissolution of (100)-oriented bulk material have been studied by micro-Raman spectroscopy. The anodization causes a breakdown of the polarization selection rules, inherent to a (100) surface, accompanied by a downward shift of the LO-phonon frequency and by the appearance of a surface-related vibrational mode in the gap between the bulk optical phonons. The frequency of the surface-related mode was found to decrease from 398 to 394.3 (Formula presented) with increasing anodization current. A Raman line-shape analysis based on the light scattering due to the electro-optic and deformation potential mechanisms is presented. |
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| Cuvinte-cheie Electrochemical etching, III-V semiconductors, Indium Phosphides |
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