Nanodefects in YAG:Ce-Based Phosphor Microcrystals
The present paper focused on the study of spectral−kinetic characteristics of luminescence in two batches of yttrium aluminum garnet (YAG):Ce-based phosphors synthesized in different years by two manufacturers: NPO “Platan” in Russia and “GrandLux” i...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2019-09-01
|
| Series: | Crystals |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4352/9/9/476 |
| _version_ | 1828146847141593088 |
|---|---|
| author | Victor Lisitsyn Ludmila Lisitsyna Aida Tulegenova Yangyang Ju Elena Polisadova Evgeniy Lipatov Vitaliy Vaganov |
| author_facet | Victor Lisitsyn Ludmila Lisitsyna Aida Tulegenova Yangyang Ju Elena Polisadova Evgeniy Lipatov Vitaliy Vaganov |
| author_sort | Victor Lisitsyn |
| collection | DOAJ |
| description | The present paper focused on the study of spectral−kinetic characteristics of luminescence in two batches of yttrium aluminum garnet (YAG):Ce-based phosphors synthesized in different years by two manufacturers: NPO “Platan” in Russia and “GrandLux” in the People’s Republic of China (PRC). Upon studying the structural characteristics of the phosphors—elemental composition, morphology, and X-ray diffraction (XRD) patterns—it was concluded that both types of YAG:Ce phosphors are highly imperfect. The presence of heterogeneities of different nature was accompanied by the introduction—to compensate for charges and elastic stresses—of intrinsic lattice defects during synthesis. There is a high probability of creating complex defects during phosphor synthesis. Luminescence properties (full width at half maximum (FWHM), spectral position of the emission peaks, excitation spectra of emission, emission decay time) are affected by the nearest environment of the luminescence center; whereas the degree of correlation of defects (distance between the components of the donor−acceptor pair) does not depend on the concentration of impurities, intrinsic defects, and their ratio. The results do not fit into the framework of existing ideas regarding the processes in phosphors as systems with widely distributed luminescence centers. The patterns obtained in the paper are discussed based on a hypothesis according to which a nanodefect phosphorus crystal phase is formed during the synthesis. |
| first_indexed | 2024-04-11T20:52:02Z |
| format | Article |
| id | doaj.art-81a7befce16b4b97bd3dc6c560e4fdb0 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T20:52:02Z |
| publishDate | 2019-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-81a7befce16b4b97bd3dc6c560e4fdb02022-12-22T04:03:49ZengMDPI AGCrystals2073-43522019-09-019947610.3390/cryst9090476cryst9090476Nanodefects in YAG:Ce-Based Phosphor MicrocrystalsVictor Lisitsyn0Ludmila Lisitsyna1Aida Tulegenova2Yangyang Ju3Elena Polisadova4Evgeniy Lipatov5Vitaliy Vaganov6School of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, 30 Lenin Ave., 634050 Tomsk, RussiaDepartment of Physics, Chemistry and Theoretical Mechanics, Tomsk State University of Architecture and Building, 2 Solyanaya Sq., 634003 Tomsk, RussiaDepartment of Solid State Physics and Nolinean Physics, Al-Farabi Kazakh National University, 71 al-Farabi Ave., Almaty 050040, KazakhstanSchool of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, 30 Lenin Ave., 634050 Tomsk, RussiaSchool of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, 30 Lenin Ave., 634050 Tomsk, RussiaInstitute of High Current Electronics, SB RAS, Akademichesky Ave., 2/3, 634055 Tomsk, RussiaSchool of Advanced Manufacturing Technologies, National Research Tomsk Polytechnic University, 30 Lenin Ave., 634050 Tomsk, RussiaThe present paper focused on the study of spectral−kinetic characteristics of luminescence in two batches of yttrium aluminum garnet (YAG):Ce-based phosphors synthesized in different years by two manufacturers: NPO “Platan” in Russia and “GrandLux” in the People’s Republic of China (PRC). Upon studying the structural characteristics of the phosphors—elemental composition, morphology, and X-ray diffraction (XRD) patterns—it was concluded that both types of YAG:Ce phosphors are highly imperfect. The presence of heterogeneities of different nature was accompanied by the introduction—to compensate for charges and elastic stresses—of intrinsic lattice defects during synthesis. There is a high probability of creating complex defects during phosphor synthesis. Luminescence properties (full width at half maximum (FWHM), spectral position of the emission peaks, excitation spectra of emission, emission decay time) are affected by the nearest environment of the luminescence center; whereas the degree of correlation of defects (distance between the components of the donor−acceptor pair) does not depend on the concentration of impurities, intrinsic defects, and their ratio. The results do not fit into the framework of existing ideas regarding the processes in phosphors as systems with widely distributed luminescence centers. The patterns obtained in the paper are discussed based on a hypothesis according to which a nanodefect phosphorus crystal phase is formed during the synthesis.https://www.mdpi.com/2073-4352/9/9/476phosphorsYAG:Cephotoluminescencecathodoluminescenceexcitationspectrakineticsexcilampnanodefect |
| spellingShingle | Victor Lisitsyn Ludmila Lisitsyna Aida Tulegenova Yangyang Ju Elena Polisadova Evgeniy Lipatov Vitaliy Vaganov Nanodefects in YAG:Ce-Based Phosphor Microcrystals Crystals phosphors YAG:Ce photoluminescence cathodoluminescence excitation spectra kinetics excilamp nanodefect |
| title | Nanodefects in YAG:Ce-Based Phosphor Microcrystals |
| title_full | Nanodefects in YAG:Ce-Based Phosphor Microcrystals |
| title_fullStr | Nanodefects in YAG:Ce-Based Phosphor Microcrystals |
| title_full_unstemmed | Nanodefects in YAG:Ce-Based Phosphor Microcrystals |
| title_short | Nanodefects in YAG:Ce-Based Phosphor Microcrystals |
| title_sort | nanodefects in yag ce based phosphor microcrystals |
| topic | phosphors YAG:Ce photoluminescence cathodoluminescence excitation spectra kinetics excilamp nanodefect |
| url | https://www.mdpi.com/2073-4352/9/9/476 |
| work_keys_str_mv | AT victorlisitsyn nanodefectsinyagcebasedphosphormicrocrystals AT ludmilalisitsyna nanodefectsinyagcebasedphosphormicrocrystals AT aidatulegenova nanodefectsinyagcebasedphosphormicrocrystals AT yangyangju nanodefectsinyagcebasedphosphormicrocrystals AT elenapolisadova nanodefectsinyagcebasedphosphormicrocrystals AT evgeniylipatov nanodefectsinyagcebasedphosphormicrocrystals AT vitaliyvaganov nanodefectsinyagcebasedphosphormicrocrystals |