Selectivity of Mn2+ ion occupancy and energy transfer of Ce3+ -> Mn2+ ions in garnet solid solution; Journal of Materials Chemistry C; Vol. 8, iss. 41
| Parent link: | Journal of Materials Chemistry C Vol. 8, iss. 41.— 2020.— [P. 14507-14514] |
|---|---|
| Corporate Author: | |
| Other Authors: | , , , , , , , , |
| Summary: | Title screen As a luminous center, Mn2+ has the advantages of high efficiency, safety, and low cost, and has been widely used to improve the color rendering index of garnet structured phosphors. Although the position of Mn2+ in garnet structures and its corresponding spectrum have been widely discussed, there is no convincing conclusion. In this paper, the selectivity of Mn2+ ion occupancy in the Y3Al5O12:0.1Ce3+,yMn2+(y = 0-0.22) garnet structure and their corresponding emission spectra were determined. At low substitution density, Mn2+ ions (y=0-0.007) easily replace Al3+ ions in the octahedron and emit 590 nm red light under 450 nm blue light excitation, which were determined by calculating the formation energy of the (Mn/Al) and (Mn/Y) local coordination and powder XRD analysis. Upon increasing the Mn2+ concentration from 0.007 to 0.22, the emission light with a peak at 750 nm gradually appears. Meanwhile, the effect of Y3+ ions on the energy transfer of Ce3+ - Mn2+ in (Lu1xYx)3Al4.8Si0.2O12:0.1Ce3+,0.2Mn2+ (x=0-1) is achieved through the reduction of the distance between Ce3+ and Mn2+ ions in the dodecahedron. The above work provides support for the correct understanding of the luminescence behavior of Mn2+, and the influence of the microstructure on the energy transfer of Ce3+ - Mn2+ ions. Finally, high color rendering index (83.4) wLEDs were fabricated by the Lu1.2Y1.8Al4.8Si0.2O12:0.1Ce3+,0.2Mn2+ phosphor and the blue chip under 120 mA. Режим доступа: по договору с организацией-держателем ресурса |
| Language: | English |
| Published: |
2020
|
| Subjects: | |
| Online Access: | https://doi.org/10.1039/D0TC03960H |
| Format: | Electronic Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=665221 |
MARC
| LEADER | 00000naa0a2200000 4500 | ||
|---|---|---|---|
| 001 | 665221 | ||
| 005 | 20250128163920.0 | ||
| 035 | |a (RuTPU)RU\TPU\network\36420 | ||
| 035 | |a RU\TPU\network\33657 | ||
| 090 | |a 665221 | ||
| 100 | |a 20210903d2020 k||y0rusy50 ba | ||
| 101 | 0 | |a eng | |
| 102 | |a GB | ||
| 135 | |a drcn ---uucaa | ||
| 181 | 0 | |a i | |
| 182 | 0 | |a b | |
| 200 | 1 | |a Selectivity of Mn2+ ion occupancy and energy transfer of Ce3+ -> Mn2+ ions in garnet solid solution |f Cai Mingsheng, Fang Shuangqiang, Khan Tao [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 44 tit.] | ||
| 330 | |a As a luminous center, Mn2+ has the advantages of high efficiency, safety, and low cost, and has been widely used to improve the color rendering index of garnet structured phosphors. Although the position of Mn2+ in garnet structures and its corresponding spectrum have been widely discussed, there is no convincing conclusion. In this paper, the selectivity of Mn2+ ion occupancy in the Y3Al5O12:0.1Ce3+,yMn2+(y = 0-0.22) garnet structure and their corresponding emission spectra were determined. At low substitution density, Mn2+ ions (y=0-0.007) easily replace Al3+ ions in the octahedron and emit 590 nm red light under 450 nm blue light excitation, which were determined by calculating the formation energy of the (Mn/Al) and (Mn/Y) local coordination and powder XRD analysis. Upon increasing the Mn2+ concentration from 0.007 to 0.22, the emission light with a peak at 750 nm gradually appears. Meanwhile, the effect of Y3+ ions on the energy transfer of Ce3+ - Mn2+ in (Lu1xYx)3Al4.8Si0.2O12:0.1Ce3+,0.2Mn2+ (x=0-1) is achieved through the reduction of the distance between Ce3+ and Mn2+ ions in the dodecahedron. The above work provides support for the correct understanding of the luminescence behavior of Mn2+, and the influence of the microstructure on the energy transfer of Ce3+ - Mn2+ ions. Finally, high color rendering index (83.4) wLEDs were fabricated by the Lu1.2Y1.8Al4.8Si0.2O12:0.1Ce3+,0.2Mn2+ phosphor and the blue chip under 120 mA. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t Journal of Materials Chemistry C | ||
| 463 | |t Vol. 8, iss. 41 |v [P. 14507-14514] |d 2020 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a селективность | |
| 610 | 1 | |a ионы | |
| 610 | 1 | |a передача энергии | |
| 610 | 1 | |a твердые растворы | |
| 610 | 1 | |a гранат | |
| 610 | 1 | |a люминофоры | |
| 610 | 1 | |a люминесценция | |
| 610 | 1 | |a цветопередача | |
| 701 | 0 | |a Cai Mingsheng | |
| 701 | 0 | |a Fang Shuangqiang | |
| 701 | 0 | |a Khan Tao | |
| 701 | 1 | |a Valiev |b D. T. |c specialist in the field of material science |c Associate Professor of Tomsk Polytechnic University, Candidate of Physical and Mathematical Sciences |f 1987- |g Damir Talgatovich |3 (RuTPU)RU\TPU\pers\33772 |9 17370 | |
| 701 | 0 | |a Lang Tianchun | |
| 701 | 0 | |a Zhong Yang |c specialist in the field of lightning engineering |c Associate Professor of Tomsk Polytechnic University, Ph.D |f 1990- |3 (RuTPU)RU\TPU\pers\39798 |9 21098 | |
| 701 | 0 | |a Wang Cailun | |
| 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 |9 15740 | |
| 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 | |
| 712 | 0 | 2 | |a Национальный исследовательский Томский политехнический университет |b Инженерная школа новых производственных технологий |b Отделение материаловедения |3 (RuTPU)RU\TPU\col\23508 |
| 801 | 2 | |a RU |b 63413507 |c 20210903 |g RCR | |
| 856 | 4 | |u https://doi.org/10.1039/D0TC03960H | |
| 942 | |c CF | ||