STUDY OF THE DEFECTIVE STRUCTURE OF LITHIUM NIOBATE CRYSTALS OF DIFFERENT COMPOSITIONS AND THEIR INFLUENCE ON THE OPTICAL AND ELECTRICAL PROPERTIES
| Autor: | M. N. Palatnikov, N. V. Sidorov, Natalya A. Teplyakova |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Proton Solid-state physics Band gap Lithium niobate Analytical chemistry Physics::Optics Electron Conductivity Crystallographic defect Spectral line Inorganic Chemistry Condensed Matter::Materials Science chemistry.chemical_compound chemistry Materials Chemistry Physical and Theoretical Chemistry |
| Zdroj: | Journal of Structural Chemistry. 62:1200-1208 |
| ISSN: | 1573-8779 0022-4766 |
| Popis: | The work considers the influence of various types of equilibrium defects on photovoltaic and diffusion fields and on the band gap of nominally pure and zinc-doped lithium niobate crystals. Concentrations of OH groups and point defects in the NbLi cationic sublattice (the deepest electron traps) and the Li/Nb ratio are calculated from the IR absorption spectra to estimate their contributions to proton conductivity. The IR absorption spectra reveal a correlation between the concentration of NbLi defect and the intensity of bands at ~3480 cm–1. |
| Databáze: | OpenAIRE |
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