Spectroscopy of atom movements in photo-excited silver-chalcogenide glasses
Absorption current imaging and scanning tunneling spectroscopy (STS) measurements were performed to study the electrical properties of partially photo-exposed silver-selenide (Ag2Se) surface. The absorption current images reveal photo-increased conductance, revealing a newly formed Ag layer. The tim...
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| Veröffentlicht in: | Journal of non-crystalline solids 2003-10, Vol.326-327, p.226-232 |
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| container_title | Journal of non-crystalline solids |
| container_volume | 326-327 |
| creator | Utsugi, Y. Watanabe, Y. Nagamura, T. |
| description | Absorption current imaging and scanning tunneling spectroscopy (STS) measurements were performed to study the electrical properties of partially photo-exposed silver-selenide (Ag2Se) surface. The absorption current images reveal photo-increased conductance, revealing a newly formed Ag layer. The time-resolved STS studies clarify the dynamical aspects of Ag+ ion movement and photo-induced change in the electronic structure of the surface; from semiconductor to metal on the exposed regions and from semiconductor to semiinsulator on the unexposed ones. These phenomena resulting from photo-induced Ag movement verify that photo-fixed Ag clusters and movable Ag+ ions exist in conflict with each other on the exposed surface. 15 refs. |
| doi_str_mv | 10.1016/S0022-3093(03)00395-8 |
| format | Article |
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| language | eng |
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| source | Elsevier ScienceDirect Journals Complete |
| title | Spectroscopy of atom movements in photo-excited silver-chalcogenide glasses |
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