Nanodefects in YAG:Ce-Based Phosphor Microcrystals; Crystals; Vol. 9, iss. 9
| Parent link: | Crystals Vol. 9, iss. 9.— 2019.— [476, 18 p.] |
|---|---|
| Altres autors: | , , , , , , |
| Sumari: | Title screen 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. |
| Idioma: | anglès |
| Publicat: |
2019
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| Matèries: | |
| Accés en línia: | http://earchive.tpu.ru/handle/11683/57558 https://doi.org/10.3390/cryst9090476 |
| Format: | Electrònic Capítol de llibre |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661608 |
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| 200 | 1 | |a Nanodefects in YAG:Ce-Based Phosphor Microcrystals |f V. M. Lisitsyn [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 61 tit.] | ||
| 330 | |a 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. | ||
| 461 | |t Crystals | ||
| 463 | |t Vol. 9, iss. 9 |v [476, 18 p.] |d 2019 | ||
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a phosphors | |
| 610 | 1 | |a YAG:Ce | |
| 610 | 1 | |a photoluminescence | |
| 610 | 1 | |a cathodoluminescence | |
| 610 | 1 | |a excitation | |
| 610 | 1 | |a spectra | |
| 610 | 1 | |a kinetics | |
| 610 | 1 | |a excilamp | |
| 610 | 1 | |a nanodefect | |
| 610 | 1 | |a люминофоры | |
| 610 | 1 | |a фотолюминенценция | |
| 610 | 1 | |a катодолюминесценция | |
| 610 | 1 | |a спектры | |
| 610 | 1 | |a кинетика | |
| 701 | 1 | |a Lisitsyn |b V. M. |c physicist |c Russian physicist |c Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1939- |g Viktor Mikhailovich |3 (RuTPU)RU\TPU\pers\28330 |9 13239 | |
| 701 | 1 | |a Lisitsyna |b L. A. |g Lyudmila Aleksandrovna | |
| 701 | 1 | |a Tulegenova |b A. T. |g Aida Tulegenkyzy | |
| 701 | 0 | |a Ju Yanyan | |
| 701 | 1 | |a Polisadova |b E. F. |c specialist in the field of lighting engineering |c professor of Tomsk Polytechnic University, doctor of physical and mathematical sciences |f 1972- |g Elena Fyodorovna |3 (RuTPU)RU\TPU\pers\33900 |9 17473 | |
| 701 | 1 | |a Lipatov |b E. I. |g Evgeny Igorevich | |
| 701 | 1 | |a Vaganov |b V. A. |c Specialist in the field of lightning engineering |c research engineer of Tomsk Polytechnic University |f 1991- |g Vitalii Andreevich |3 (RuTPU)RU\TPU\pers\37525 |9 20394 | |
| 801 | 2 | |a RU |b 63413507 |c 20200124 |g RCR | |
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| 856 | 4 | 0 | |u https://doi.org/10.3390/cryst9090476 |
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