Improved phase stability of the metastable K2GeF6:Mn4+ phosphors with high thermal stability and water-proof property by cation substitution; Chemical Engineering Journal; Vol. 380
| Parent link: | Chemical Engineering Journal Vol. 380.— 2020.— [122429, 7 p.] |
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| Corporate Author: | |
| Other Authors: | , , , , , , , , |
| Summary: | Title screen K2GeF6:Mn4+ (KGFM) phosphors with very poor water-proof property in HF solution transform automatically from P63mc hexagonal phase to P3¯m1 trigonal phase. By substituting Ge4+ ion with Si4+ ion, the metastable P63mc hexagonal K2(Ge1-xSix)F6:Mn4+ (KGSFM) with an obvious zero-phonon line peaking at 623.8 nm is stabilized in HF solution. When x = 0.3, the photoluminescence intensity of KGSFM keeps 78% after 168 h in water as well as it increases by 14% at 150 °C (423 K) more than that of KGFM. By using KGSFM the fabricated WLEDs exhibit the high color-rendering index (Ra=92) and low correlated color temperature (CCT=3810 K). These results demonstrate that KGSFM solid solution with efficient red emission, meritorious water-proof and high thermal stability is a promising phosphor for the commercial application in the WLEDs and wide-gamut displays. Режим доступа: по договору с организацией-держателем ресурса |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://doi.org/10.1016/j.cej.2019.122429 |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665309 |
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| 200 | 1 | |a Improved phase stability of the metastable K2GeF6:Mn4+ phosphors with high thermal stability and water-proof property by cation substitution |f Lang Tianchun, Khan Tao, Fang Shuangqiang [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 27 tit.] | ||
| 330 | |a K2GeF6:Mn4+ (KGFM) phosphors with very poor water-proof property in HF solution transform automatically from P63mc hexagonal phase to P3¯m1 trigonal phase. By substituting Ge4+ ion with Si4+ ion, the metastable P63mc hexagonal K2(Ge1-xSix)F6:Mn4+ (KGSFM) with an obvious zero-phonon line peaking at 623.8 nm is stabilized in HF solution. When x = 0.3, the photoluminescence intensity of KGSFM keeps 78% after 168 h in water as well as it increases by 14% at 150 °C (423 K) more than that of KGFM. By using KGSFM the fabricated WLEDs exhibit the high color-rendering index (Ra=92) and low correlated color temperature (CCT=3810 K). These results demonstrate that KGSFM solid solution with efficient red emission, meritorious water-proof and high thermal stability is a promising phosphor for the commercial application in the WLEDs and wide-gamut displays. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Chemical Engineering Journal | ||
| 463 | |t Vol. 380 |v [122429, 7 p.] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a K2GeF6:Mn4+ | |
| 610 | 1 | |a metastable phase | |
| 610 | 1 | |a red phosphor | |
| 610 | 1 | |a high thermal stability | |
| 610 | 1 | |a water-proof | |
| 610 | 1 | |a метастабильные фазы | |
| 610 | 1 | |a люминофоры | |
| 610 | 1 | |a термостойкость | |
| 610 | 1 | |a водонепроницаемость | |
| 701 | 0 | |a Lang Tianchun | |
| 701 | 0 | |a Khan Tao | |
| 701 | 0 | |a Fang Shuangqiang | |
| 701 | 0 | |a Wang Qunyi | |
| 701 | 0 | |a Cao Shixiu | |
| 701 | 0 | |a Peng Lingling | |
| 701 | 0 | |a Liu Bitao | |
| 701 | 1 | |a Korepanov |b V. I. |c specialist in the field of lightning engineering |c Professor of Tomsk Polytechnic University, Doctor of physical and mathematical sciences |f 1947- |g Vladimir Ivanovich |3 (RuTPU)RU\TPU\pers\33774 |9 17372 | |
| 701 | 1 | |a Yakovlev |b A. N. |c specialist in the field of lightning engineering |c Vice-rector-Director of Tomsk Polytechnic University, Candidate of physical and mathematical sciences |f 1971- |g Aleksey Nikolaevich |3 (RuTPU)RU\TPU\pers\31580 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Отделение материаловедения |3 (RuTPU)RU\TPU\col\23508 |
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| 856 | 4 | |u https://doi.org/10.1016/j.cej.2019.122429 | |
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