Photoluminescence and Features of the Defective Structure of Nominally Pure Lithium Niobate Crystals
| Autor: | Maxim A. Smirnov, M. N. Palatnikov, Natalya A. Teplyakova, Alexander Vjacheslavovich Syuy, N. V. Sidorov |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Photoluminescence business.industry Lithium niobate 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics chemistry.chemical_compound chemistry 0103 physical sciences Optoelectronics General Materials Science 0210 nano-technology business |
| Zdroj: | Solid State Phenomena. 312:121-127 |
| ISSN: | 1662-9779 |
| Popis: | The photoluminescence intensity in lithium niobate crystals close to the stoichiometric composition is lower than in a congruent crystal was established. An increase in the Li / Nb ratio leads to a shift in the photoluminescence bands to the short-wavelength region of the spectrum and a change in the fundamental absorption edge of the crystals under study. It was shown that, in addition to point defects in the cationic sublattice, complex defects due to the presence of OH groups in the structure can also contribute to photoluminescence. |
| Databáze: | OpenAIRE |
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