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Bibliographies thématiques / SM3+DOPED KMGPO4 PHOSPHORS

Littérature scientifique sur le sujet « SM3+DOPED KMGPO4 PHOSPHORS »

Auteur : Grafiati

Publié le 11 septembre 2023

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Articles de revues sur le sujet "SM3+DOPED KMGPO4 PHOSPHORS"

1

Wu, Wen-Te, Kwong-Kau Tiong, Yu-Wei Lee, Sheng-Yao Hu, Yueh-Chien Lee et Wei Huang. « Tunable Luminescence of Sm3+/Tb3+ Co-Doped CaMoO4 Phosphors Synthesized by Microwave-Assisted Heating ». Applied Sciences 12, n^o 15 (5 août 2022) : 7883. http://dx.doi.org/10.3390/app12157883.

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We present a series of Sm3+/Tb3+ co-doped CaMoO4 phosphors synthesized by an efficient method of microwave-assisted heating. The prepared CaMoO4 samples were characterized by X-ray diffraction, photoluminescence, and Commission Internationale de l’Elcairage (CIE) chromaticity diagram. The X-ray diffraction results confirmed that all synthesized CaMoO4 samples are crystallized in a pure tetragonal phase. The photoluminescence spectra significantly show both red- and green emissions in the synthesized Sm3+/Tb3+ co-doped CaMoO4 phosphors. It is obvious that the variations in the intensity ratio of red/green emissions depend on the molar ratio of Sm3+/Tb3+ co-doping and dominate the CIE color coordinates on the chromaticity diagram. The investigations showed the functionality of the material system as advanced color-tunable phosphors for white-LEDs as evidenced by the controllability of the light-emitting region of Sm3+/Tb3+ co-doped CaMoO4 phosphors through the adjustment of the molar ratio of Sm3+/Tb3+ ions.

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Xue, Na, Zhoufei Hei, Ze Zhao, Jing Wang, Ting Wang, Mengxue Li, Hyeon Mi Noh, Jung Hyun Jeong et Ruijin Yu. « Preparation and Luminescent Properties of Sm3+-Doped High Thermal Stable Sodium Yttrium Orthosilicate Phosphor ». Journal of Nanoscience and Nanotechnology 16, n^o 4 (1 avril 2016) : 3500–3505. http://dx.doi.org/10.1166/jnn.2016.11814.

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Orange-red-emitting sodium yttrium orthosilicate NaYSiO4:xSm3+ (x = 0.005, 0.01, 0.02, 0.05, 0.10, 0.15, and 0.20) were synthesized. The phase structure and photoluminescence properties of these phosphors were investigated. The emission spectrum obtained by excitation into 406 nm contains exclusively the characteristic emissions of Sm3+ at 571 nm, 602 nm, 648 nm, and 710 nm, which correspond to the transitions from 4G5/2 to 6H5/2, 6H7/2, 6H9/2, and 6H11/2 of Sm3+, respectively. The strongest one is located at 602 nm due to the 4G5/2 → 6H7/2 transition of Sm3+, generating bright orange–red light. The optimum dopant concentration of Sm3+ ions in NaYSiO4:xSm3+ is around 2 mol%, and the critical transfer distance of Sm3+ is calculated as 23 Å. The thermal quenching temperature is above 500 K. The fluorescence lifetime of Sm3+ in NaYSiO4:0.02Sm3+ is 1.83 ms. The NaYSiO4:Sm3+ phosphors may be potentially used as red phosphors for white light emitting diodes.

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Xiao, Qi, et Gao Yuan Zhu. « Photoluminescence Properties of Sm³⁺-Doped La₂O₃ Powders ». Advanced Materials Research 399-401 (novembre 2011) : 967–72. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.967.

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The Sm3+-Doped La2O3powders were prepared by precipitation method. The room temperature photoluminescence (PL) spectra of Sm3+-Doped La2O3powders doped with different Sm3+concentration excited at 405 nm have been investigated. The PL spectra showed three main strong emissions peaks at near 572, 613, and 657 nm, which were due to the f-f forbidden transitions of the 4f electrons of Sm3+, corresponding to4G5/2→6H5/2(572 nm),6H7/2(613 nm), and6H9/2(657 nm), respectively. The optimum Sm3+concentration in La2O3powders for optical emission was determined to be 2.0 %. Since the 2% Sm-doped La2O3 offer a rather strong f–f transition excitation in near the UV region, the as-prepared phosphors are likely to be used as potential red phosphors for near-ultraviolet (370-410 nm) light-emitting diodes (LEDs).

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Li, Xiangping, Xin Wang, Xuejing Li, Lihong Cheng, Lili Tong, Wenlong Wang, Jiashi Sun, Jinsu Zhang et Baojiu Chen. « Luminescence studies of Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors ». Physica B : Condensed Matter 481 (janvier 2016) : 197–203. http://dx.doi.org/10.1016/j.physb.2015.11.017.

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Singh, Vijay, Arti Yadav, Ch B. Annapurna Devi, A. S. Rao et Neelam Singh. « Luminescence properties of Sm3+ doped LaP3O9 phosphors ». Optik 242 (septembre 2021) : 167264. http://dx.doi.org/10.1016/j.ijleo.2021.167264.

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Ou, Yiyi, Junyu Wei et Hongbin Liang. « Tunable Luminescence and Energy Transfer of Sr3B2O6:Ce3+, Sm3+ Phosphors with Potential Anti-Counterfeiting Applications ». Materials 15, n^o 15 (26 juillet 2022) : 5189. http://dx.doi.org/10.3390/ma15155189.

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Sm3+ and Ce3+ singly doped and Sm3+ and Ce3+ co-doped Sr3B2O6 phosphors are prepared via a high-temperature solid-state reaction method. The crystal structure and phase purity are characterized by X-ray diffraction (XRD) analyses. The Sm3+-doped sample displays an emission in the orange-red region, with the strongest emission line at about 648 nm and possessing a good luminescence thermal stability between 78 and 500 K. With the increase in the Sm3+ content, the concentration quenching is observed due to the cross-relaxation (CR) processes among the Sm3+ ions. Upon 340 nm excitation, the Ce3+-doped phosphor presents a broad emission band in the blue region with a maximum at about 420 nm, which overlaps well with the 6H5/2 → 6P3/2 excitation line of Sm3+ and implies the possible energy transfer from Ce3+ to Sm3+. The spectral and decay measurements of the Ce3+ and Sm3+ co-doped samples are conducted and the Inokuti–Hirayama (I-H) model is adopted to analyze the luminescence decay dynamics of the donor Ce3+. Owing to the evident sensitization of the Sm3+ by the Ce3+ ions, the co-doped samples exhibit color variation under different wavelength excitations, endowing them with potential applications in optical anti-counterfeiting.

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Angiuli, F., E. Cavalli, P. Boutinaud et R. Mahiou. « Emission properties of Sm3+/Bi3+-doped YPO4 phosphors ». Journal of Luminescence 135 (mars 2013) : 239–42. http://dx.doi.org/10.1016/j.jlumin.2012.10.005.

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Zhang, Jie, Chong Chen, Xingang Zhang, Xiaoyu Wang, Wenhua Shi et Bing Han. « Photoluminescence properties of Sm3+ doped barium borophosphate phosphors ». Optik 158 (avril 2018) : 1499–503. http://dx.doi.org/10.1016/j.ijleo.2018.01.048.

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Yerojwar, R. M., N. S. Kokode, C. M. Nandanwar et D. K. Ingole. « Synthesis and Photoluminescence characterization of Sr3La(AlO)3(BO3)4:Eu3+,Sm3+ Phosphor for W-LED ». Physics and Chemistry of Solid State 24, n^o 1 (27 mars 2023) : 202–7. http://dx.doi.org/10.15330/pcss.24.1.202-207.

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A Red emitting with high efficiency Eu3+ doped Sr3La(AlO)3(BO3)4 and Sm3+ doped Sr3La(AlO)3(BO3)4 phosphors has been synthesized by combustion method, meanwhile, the photoluminescence properties of samples are investigated in detail. Morphology by SEM and chromaticity by CIE was studied. The results show that the excitation extends from 340 nm to 420 nm, with the highest excitation (394 nm and 406 nm) being in the violet area for Eu3+ and Sm3+ doping, indicating that the phosphor can correlate well with LED chips. Under violet light excitation of 394nm the phosphor Eu3+ doped Sr3La(AlO)3(BO3)4 and of 406 nm the phosphor Sm3+ doped Sr3La(AlO)3(BO3)4 can emit strong red light showing main emission peaks located at 617 nm and 602 nm are observed respectively. The PL properties implies the excellent stability of the phosphor. These results imply that the importance red phosphors Sr3La(AlO)3(BO3)4:Eu3+ and Sr3La(AlO)3(BO3)4:Sm3+ in W-LEDs under NUV excitation.

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Rambabu, U., K. Rajamohan Reddy, K. Annapurna, T. Balaji, J. V. Satyanarayana et S. Buddhudu. « Fluorescence spectra of Sm3+-doped lanthanide oxychloride powder phosphors ». Materials Letters 27, n^o 1-2 (mai 1996) : 59–63. http://dx.doi.org/10.1016/0167-577x(96)80002-4.

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Thèses sur le sujet "SM3+DOPED KMGPO4 PHOSPHORS"

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楊適存. « The preparation and photoluminescence of Y2O3 phosphors doped Eu3+ and Sm3+ ions ». Thesis, 2002. http://ndltd.ncl.edu.tw/handle/90331068833081839777.

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Yi-HuaHung et 洪逸樺. « Single-phased white-light-emitting luminescence using color-tunable Dy3+/Tb3+ co-doped LiLa(MoO4)2:Sm3+ red-orange phosphors ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ajc67m.

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Actes de conférences sur le sujet "SM3+DOPED KMGPO4 PHOSPHORS"

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Prasad, V. Reddy, S. Damodaraiah et Y. C. Ratnakaram. « Energy transfer mechanism of Sm3+/Eu3+ co-doped 2CaO-B2O3-P2O5 phosphors ». Dans DAE SOLID STATE PHYSICS SYMPOSIUM 2017. Author(s), 2018. http://dx.doi.org/10.1063/1.5029136.

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