Photoinduced phenomena in thin films of chalcogenide system Ga-Ge-S: a role of oxidation
Thin films of the chalcogenide glassy system 15(Ga2S3) ‐ 85(GeS2) were deposited by ultra violet (UV) laser ablation method. Optical absorption edge and refractive index of the films were studied. It was found that optical properties of the as‐deposited (fresh deposited) films exhibit modification w...
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| Veröffentlicht in: | Laser physics letters 2006-04, Vol.3 (4), p.190-194 |
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| container_end_page | 194 |
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| container_title | Laser physics letters |
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| creator | Povolotskiy, A. V. Borisov, E. N. Ivanova, T. Yu Manshina, A. A. |
| description | Thin films of the chalcogenide glassy system 15(Ga2S3) ‐ 85(GeS2) were deposited by ultra violet (UV) laser ablation method. Optical absorption edge and refractive index of the films were studied. It was found that optical properties of the as‐deposited (fresh deposited) films exhibit modification with time (ageing phenomenon). Photoinduced changes of the optical properties of the films were studied after films exposure to sub‐bandgap, and independently super‐bandgap monochromatic radiation. Considerable change of the optical parameters of the films ‐ photobleaching (blue shift of the optical absorption edge position) and decreasing of the refractive index as a result of laser illumination was found in both cases. The reason of photobleaching and ageing phenomena is supposed to be the same. These phenomena can be associated with the films oxidation. (© 2006 by Astro, Ltd. Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA) |
| doi_str_mv | 10.1002/lapl.200510083 |
| format | Article |
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The reason of photobleaching and ageing phenomena is supposed to be the same. These phenomena can be associated with the films oxidation. (© 2006 by Astro, Ltd. Published exclusively by WILEY‐VCH Verlag GmbH & Co. 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Optical absorption edge and refractive index of the films were studied. It was found that optical properties of the as‐deposited (fresh deposited) films exhibit modification with time (ageing phenomenon). Photoinduced changes of the optical properties of the films were studied after films exposure to sub‐bandgap, and independently super‐bandgap monochromatic radiation. Considerable change of the optical parameters of the films ‐ photobleaching (blue shift of the optical absorption edge position) and decreasing of the refractive index as a result of laser illumination was found in both cases. The reason of photobleaching and ageing phenomena is supposed to be the same. These phenomena can be associated with the films oxidation. (© 2006 by Astro, Ltd. Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)</abstract><cop>Berlin</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/lapl.200510083</doi><tpages>5</tpages></addata></record> |
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| ispartof | Laser physics letters, 2006-04, Vol.3 (4), p.190-194 |
| issn | 1612-2011 1612-202X |
| language | eng |
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| source | IOP Publishing Journals; Access via Wiley Online Library; Institute of Physics (IOP) Journals - HEAL-Link |
| subjects | chalcogenide thin film photobleaching photoinduced changes UV laser ablation |
| title | Photoinduced phenomena in thin films of chalcogenide system Ga-Ge-S: a role of oxidation |
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