Comparative studies of photoluminescent and optical properties, concentration of OH– groups in double-doped LiNbO3: Er:Zn crystals
A comparative analysis of the photoluminescent properties, concentration of OH–-groups and optical quality of double-doped crystals obtained from charges of different genesis has been performed. In a LiNbO3:Er(0,53 mol.%):Zn(4,02 mol.%) crystal obtained by solid-phase doping, the content of OH–-grou...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | Russian |
| Published: |
Tver State University
2024-12-01
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| Series: | Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов |
| Subjects: | |
| Online Access: | https://physchemaspects.ru/2024/doi-10-26456-pcascnn-2024-16-060/?lang=en |
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| Summary: | A comparative analysis of the photoluminescent properties, concentration of OH–-groups and optical quality of double-doped crystals obtained from charges of different genesis has been performed. In a LiNbO3:Er(0,53 mol.%):Zn(4,02 mol.%) crystal obtained by solid-phase doping, the content of OH–-groups is higher than in a LiNbO3:Er(0,75 mol.%):Zn(3,82 mol.%) crystal obtained by homogeneous doping. These changes occur as a result of the simultaneous formation of two types of complex defects in the LiNbO3:Er (0,53 mol.%):Zn(4,02 mol.%) crystal structure: ZnNb3--OH and VLi- OH. It has been established that photoluminescence in the visible region is caused by radiative transitions of Er3+ without the manifestation of the host’s own luminescence in the studied crystals. For the LiNbO3:Er:Zn crystal obtained by solid-phase doping, the luminescence intensity is 77% higher than in the crystal obtained by homogeneous doping. This may be due to the participation of OH–-groups in the energy transfer between the host and the Er3+ ions. |
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| ISSN: | 2226-4442 2658-4360 |