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Journal articles on the topic 'SM3+DOPED KMGPO4 PHOSPHORS'

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Published: 11 September 2023

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1

Wu, Wen-Te, Kwong-Kau Tiong, Yu-Wei Lee, Sheng-Yao Hu, Yueh-Chien Lee, and Wei Huang. "Tunable Luminescence of Sm3+/Tb3+ Co-Doped CaMoO4 Phosphors Synthesized by Microwave-Assisted Heating." Applied Sciences 12, no. 15 (August 5, 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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2

Xue, Na, Zhoufei Hei, Ze Zhao, Jing Wang, Ting Wang, Mengxue Li, Hyeon Mi Noh, Jung Hyun Jeong, and Ruijin Yu. "Preparation and Luminescent Properties of Sm3+-Doped High Thermal Stable Sodium Yttrium Orthosilicate Phosphor." Journal of Nanoscience and Nanotechnology 16, no. 4 (April 1, 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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3

Xiao, Qi, and Gao Yuan Zhu. "Photoluminescence Properties of Sm3+-Doped La2O3 Powders." Advanced Materials Research 399-401 (November 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, and Baojiu Chen. "Luminescence studies of Sm3+ single-doped and Sm3+, Dy3+ co-doped NaGdTiO4 phosphors." Physica B: Condensed Matter 481 (January 2016): 197–203. http://dx.doi.org/10.1016/j.physb.2015.11.017.

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5

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

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6

Ou, Yiyi, Junyu Wei, and Hongbin Liang. "Tunable Luminescence and Energy Transfer of Sr3B2O6:Ce3+, Sm3+ Phosphors with Potential Anti-Counterfeiting Applications." Materials 15, no. 15 (July 26, 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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7

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

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8

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

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9

Yerojwar, R. M., N. S. Kokode, C. M. Nandanwar, and 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, no. 1 (March 27, 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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10

Rambabu, U., K. Rajamohan Reddy, K. Annapurna, T. Balaji, J. V. Satyanarayana, and S. Buddhudu. "Fluorescence spectra of Sm3+-doped lanthanide oxychloride powder phosphors." Materials Letters 27, no. 1-2 (May 1996): 59–63. http://dx.doi.org/10.1016/0167-577x(96)80002-4.

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11

Singh, Vijay, G. Lakshminarayana, Akshatha Wagh, and N. Singh. "Photoluminescence investigation on orange-emitting Sm3+-doped Ca3MgSi2O8 phosphors." Optik 206 (March 2020): 164240. http://dx.doi.org/10.1016/j.ijleo.2020.164240.

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12

Zhang, Xinmin, and Hyo Jin Seo. "Luminescence properties of novel Sm3+, Dy3+ doped LaMoBO6 phosphors." Journal of Alloys and Compounds 509, no. 5 (February 2011): 2007–10. http://dx.doi.org/10.1016/j.jallcom.2010.10.119.

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13

Ha, Myoung Gyu, Jae-Sun Jeong, Kyoung-Rim Han, Yangsoo Kim, Ho-Soon Yang, Euh Duck Jeong, and K. S. Hong. "Characterizations and optical properties of Sm3+-doped Sr2SiO4 phosphors." Ceramics International 38, no. 7 (September 2012): 5521–26. http://dx.doi.org/10.1016/j.ceramint.2012.03.067.

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14

Xiong, H. H., C. Zhu, X. Zhao, Z. Q. Wang, and H. Lin. "Rare Earth Doped Lanthanum Calcium Borate Polycrystalline Red Phosphors." Advances in Materials Science and Engineering 2014 (2014): 1–7. http://dx.doi.org/10.1155/2014/819057.

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Single-phased Sm3+doped lanthanum calcium borate (SmxLa2−xCaB10O19, SLCB,x=0.06) polycrystalline red phosphor was prepared by solid-state reaction method. The phosphor has two main excitation peaks located at 398.5 nm and 469.0 nm, which are nicely in accordance with the emitting wavelengths of commercial near-UV and blue light emitting diode chips. Under the excitation of 398.0 nm, the dominant red emission of Sm3+in SLCB phosphor is centered at 598.0 nm corresponding to the transition of4G5/2 → 6H7/2. The Eu3+fluorescence in the red spectral region is applied as a spectroscopic probe to reveal the local site symmetry in the host lattice and, hence, Judd-Ofelt parametersΩt (t=2, 4)of Eu3+in the phosphor matrix are derived to be3.62×10-20and1.97×10-20 cm2, indicating a high asymmetrical and strong covalent environment around rare earth luminescence centers. Herein, the red phosphors are promising good candidates employed in white light emitting diodes (LEDs) illumination.
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15

Ren, Qiang, Yujing Zhao, Xiulan Wu, and Ou Hai. "The color tunable of Tb3+/Sm3+ co-doped phosphors through Tb3+ → Sm3+ energy transfer." Polyhedron 192 (December 2020): 114862. http://dx.doi.org/10.1016/j.poly.2020.114862.

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16

Chen, Zijun, Huiyi Xu, Chunyan Cao, Xiaoting Chen, Min Zhang, Minkun Jian, Yuechan Li, and An Xie. "Synthesis, Luminescent Properties and White LED Fabrication of Sm3+ Doped Lu2WMoO9." Coatings 11, no. 4 (March 31, 2021): 403. http://dx.doi.org/10.3390/coatings11040403.

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In this paper, Sm3+ doped Lu2W0.5Mo0.5O6, Lu2WMoO9, and Lu2(W0.5Mo0.5O4)3 materials were synthesized by using a two-step solid-state reaction method. The synthesized materials were characterized by X-ray diffraction (XRD) patterns, field emission scanning electronic micrograph (FE-SEM) pictures, photoluminescence (PL) excitation and emission spectra, and temperature-dependent emission intensities. Orange-reddish light could be observed from the phosphors under ultraviolet (UV) 365 nm light. The Sm3+ doped Lu2WMoO9 had enhanced PL intensities compared to the other two materials. The excitation, the energy transfer, the nonradiative relaxation, and the emission processes were illustrated by using schematic diagrams of Sm3+ in Lu2MoWO9. The optimal Sm3+ doping concentration was explored in the enhancing luminescence of Lu2WMoO9. By combing the Sm3+ doped Lu2WMoO9 to UV 365 nm chips, near white lighting emitting diode (W-LED) were obtained. The phosphor can be used in single phosphor-based UV W-LEDs.
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17

Geng, Xiu Juan, Yong Jie Chen, Yan Wen Tian, and Lin Jiu Xiao. "Luminescence Properties and Energy Transfer of Sm3+-Eu3+ Co-Doped Gd2(MoO4)3 Red Phosphors." Advanced Materials Research 591-593 (November 2012): 931–34. http://dx.doi.org/10.4028/www.scientific.net/amr.591-593.931.

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The red phosphor Gd2(MoO4)3:Eu3+,Sm3+ was prepared by sol-gel method. The morphology and luminescence characteristics of the phosphor particles were characterized by scanning electron microscopy (SEM) and fluorophotometer. The results showed that the phosphor had the advantages of small particle size and the uniform particle size distribution. The luminescence properties of Eu3+ ions in Gd1.37Eu0.6Sm0.03(MoO4)3 could be evidently improved by co-doping of Sm3+ ions, which was due to the efficient energy transfer process from Sm3+ to Eu3+ ions. The chromaticity coordinates for Eu3+ doped Gd1.4Eu0.6(MoO4)3 and Eu3+ and Sm3+ codoped Gd1.37Eu0.6Sm0.03(MoO4)3, are(0.662, 0.329) and (0.668, 0.331), respectively. Because of the introduction of Sm3+ into the red-emitting phosphors, the chromaticity coordinates of Gd1.37Eu0.6Sm0.03(MoO4)3 phosphor is closer to the standard values of International chromaticity coordinates(0.67, 0.33). So Gd1.37Eu0.6Sm0.03(MoO4)3 shows good prospect for red phosphors of white LED.
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18

Wi, Jung-Hyun, Jae-Yong Jung, and Sang-Geon Park. "Synthesis of Rare-Earth-Doped Strontium Tungstate Phosphor at Room Temperature and Applied Flexible Composite." Materials 15, no. 24 (December 13, 2022): 8922. http://dx.doi.org/10.3390/ma15248922.

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In this study, we successfully synthesized rare-earth-doped crystalline SrWO4 at room temperature by co-precipitation. The results from the X-ray diffraction analysis showed a main diffraction peak related to the (112) plane. Phosphors doped with either Dy3+ or Sm3+ ions showed strong light absorption in the UV region and blue-yellow and red light emission. To synthesize a white light phosphor, Dy3+ and Sm3+ ions were co-doped to produce a SrWO4:[Sm3+]/[Dy3+] phosphor. When the Sm3+ ion concentration was increased and the Dy3+ concentration was maintained, the red light intensity increased while the blue-yellow light intensity decreased. The composites were combined with polydimethylsiloxane (PDMS), and a flexible composite material was fabricated. The composite exhibited various luminescence properties under UV and visible light, which suggested its potential for use as an LED color filter.
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19

Xu, Yingwei, Tingting Zhang, Li Zheng, and Ailing Zou. "Luminescence properties of Eu2+ and Sm3+ co-doped in KBaPO4." High Temperature Materials and Processes 40, no. 1 (January 1, 2021): 389–96. http://dx.doi.org/10.1515/htmp-2021-0046.

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Abstract KBaPO4:Eu2+/Sm3+ phosphor was synthesized via the high-temperature solid-phase reaction method. The structural properties, surface morphology, and optical properties of the synthesized samples were obtained by the X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), and fluorescence measurements. The XRD patterns indicate that the crystal structure of KBaPO4 has not been changed by co-doped with two rare-earth ions. Under the excitation of 400 nm, the Eu2+ and Sm3+ co-doped KBaPO4 phosphors showed typical emission peaks at 430 (blue), 562 (yellow), and 600 nm (red). Meanwhile, with the increase of the Sm3+ content, the photoluminescent (PL) emission intensity of Sm3+ increased until the content reaches 0.12. However, the PL intensity of Eu2+ ions gradually decreased, which indicated that there was a possible energy transfer between the two ions. Therefore, the obtained results indicated that Eu2+/Sm3+ co-doped KBaPO4 is a promising phosphor for the use in white light-emitting diodes with near ultraviolet chips.
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20

YANG, Zhiping, Hongyan DONG, Pengfei LIU, Chuncai HOU, Xiaoshuang LIANG, Can WANG, and Fachun LU. "Photoluminescence properties of Sm3+-doped LiY(MoO4)2 red phosphors." Journal of Rare Earths 32, no. 5 (May 2014): 404–8. http://dx.doi.org/10.1016/s1002-0721(14)60085-5.

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21

Singh, Vijay, G. Lakshminarayana, Akshatha Wagh, and D. A. Hakeem. "Photoluminescence features of reddish-orange emitting Sm3+ doped Na3YSi2O7 phosphors." Optik 206 (March 2020): 163910. http://dx.doi.org/10.1016/j.ijleo.2019.163910.

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22

Rambabu, U., P. K. Khanna, and S. Buddhudu. "Fluorescence spectra of Sm3+-doped rare earth oxybromide powder phosphors." Materials Letters 38, no. 2 (January 1999): 121–24. http://dx.doi.org/10.1016/s0167-577x(98)00144-x.

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23

Tushagu·ABUDUWUFU, 吐沙姑·阿不都吾甫, 戴鹏鹏 DAI Peng-peng, 马媛媛 MA Yuan-yuan, 周芷萱 ZHOU Zhi-xuan, 海热古·吐逊 Hairegu·TUXUN, and 艾尔肯·斯地克 Aierken·SIDIKE. "Luminescent Properties of Dy3+，Sm3+ Co-doped Ca2A1［AlSiO7］ Phosphors." Chinese Journal of Luminescence 38, no. 2 (2017): 154–59. http://dx.doi.org/10.3788/fgxb20173802.0154.

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24

Verma, Tarkeshwari, and Sadhana Agrawal. "Photoluminescence characteristics of Sm3+ and Eu3+ doped yttrium oxide phosphors." Journal of Materials Science: Materials in Electronics 29, no. 15 (June 21, 2018): 13397–406. http://dx.doi.org/10.1007/s10854-018-9465-6.

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25

Sharma, R., and M. Mehta. "Structural and optical properties of Magnesium borate phosphors for dosimetric purpose." Journal of Physics: Conference Series 2484, no. 1 (May 1, 2023): 012019. http://dx.doi.org/10.1088/1742-6596/2484/1/012019.

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Abstract The recent study presented the structural and optical features of Sm-doped magnesium borate. The X-ray diffraction pattern displays the crystal structure of the prepared sample which matches with the JCPDS card. The morphological studies, elemental analysis, and vibrational properties were examined by SEM, EDX, and FTIR measurements. The TL emission spectra of pure magnesium borate phosphors show only one peak at 209°c, and doped phosphors show an intense peak at 212°c. The PL excitation (PLE) spectrum of the MgB4O7: Sm samples was observed at a wavelength range of 330 – 475 nm. The maximum sharp line is detected nearly at 407 nm that corresponds to ions Sm3+ transition of 6H5/2 → 4K11/2 and the PL emission of the intense line was measured at a wavelength of 612 nm due to the significant excitation of Sm3+ ions from 4G5/2 to 6H7/2. In addition, the bonding behavior of synthesized phosphors was determined by Raman spectroscopy.
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26

Meza-Rocha, A. N., A. Speghini, M. Bettinelli, and U. Caldiño. "Orange and reddish-orange light emitting phosphors: Sm3+ and Sm3+/Eu3+ doped zinc phosphate glasses." Journal of Luminescence 167 (November 2015): 305–9. http://dx.doi.org/10.1016/j.jlumin.2015.06.050.

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27

Yildiz, Esra. "Synthesis and Luminescence Properties of ZrO2:Gd3+, RE3+(RE = Sm3+ ,Er3+) Phosphors." Materials Science-Poland 36, no. 2 (June 25, 2018): 162–66. http://dx.doi.org/10.1515/msp-2018-0031.

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Abstract In the present study, ZrO2co-doped with Gd3+/Sm3+and Gd3+/Er3+ions have been synthesized using Pechini method. Phase composition, morphology and photoluminescence properties of the synthesized phosphors were investigated by using X-ray powder diffraction (XRD), differential thermal analysis/thermal gravimetry (DTA/TG), scanning electron microscopy (SEM) and photoluminescence spectrofluorometer (PL). After heating at 1200 °C, XRD revealed that the phosphors were crystallized as monoclinic and tetragonal multiphases. SEM images indicated that the phosphors consist of fine and spherical grains with a size around 200 nm to 250 nm. Luminescence studies of these phosphors have been carried out on the emission and excitation, along with lifetime measurements
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28

Gu, Tingxiang, Ting Wang, Qianrui Ma, Haihong Guo, Haozhe Liu, Xuanyu Zhu, Lin Nie, Mingbing Wang, and Shuangqiang Fang. "Stable Multimode Luminescence Performances of SrGa12O19: Sm3+, Tb3+ Phosphor for Anti-Counterfeiting Application." ECS Journal of Solid State Science and Technology 11, no. 8 (August 1, 2022): 086002. http://dx.doi.org/10.1149/2162-8777/ac8a73.

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Fluorescence materials have been widely employed for anti-counterfeiting techniques owing to their high-throughput, facile identification, and simplicity of production. However, the stability of the materials is a prerequisite for their subsequent application. Here, a series of SrGa12O19: Sm3+, Tb3+ phosphors with multi-color luminescence are obtained successfully by the traditional solid-state method. These Sm3+/Tb3+ co-doped phosphors emit green, orange and yellow-green under the excitation of 254 nm, 365 nm, and 254 nm+365 nm UV lamps, respectively. After removal of the UV lamp, the green long persistent luminescence (LPL) phenomenon is exhibited and then vanished 15 s later. The dynamic PL and LPL are associated with the interaction between PL and trapping centers. Notably, as-obtained phosphors show excellent stability against both air water resistance, and high temperature, which features the as-obtained phosphors a great application potential in high-level anti-counterfeiting with high stability.
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29

Xu, Yudong, Yuwei Xu, Lei Wang, Xiaobin Yang, Min Shi, Cailu Wang, Meizhen Liu, and Ning Zhao. "Preparation and photoluminescence of Ag+ and / or Sm3+-doped polyphosphate phosphors." Optik 245 (November 2021): 167664. http://dx.doi.org/10.1016/j.ijleo.2021.167664.

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30

Zhao, Ce, Ke Hui Qiu, Xia He, Guo Yin Yan, and Si Zhu Chen. "Combustion Synthesis and Luminescence Properties of Li2Ca1-x-ySiO4: xEu3+, ySm3+ Phosphors." Materials Science Forum 814 (March 2015): 384–88. http://dx.doi.org/10.4028/www.scientific.net/msf.814.384.

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A series of red-emitting phosphors, Eu3+-doped and Eu3+ with Sm3+ co-doped Li2CaSiO4, were prepared by the combustion method. The phase composition was investigated by XRD, and photoluminescent properties were characterized by fluorescent spectrophotometer. The results show that the diffraction peaks of samples all match well with that of Li2CaSiO4 [JCPDS NO. 27-0290]. The excitation spectra consists of the broadband and the sharp lines, which are assigned to the charge transfer band (CTB) of Eu3+→O2– and the typical intra-4f transitions of the Eu3+ ions, respectively. The emission spectrum covers the characteristic f-f transitions of Eu3+, namely, 5D0→7F1 (596 nm), 5D0→7F2 (620 nm), 5D0→7F3 (657 nm) and 5D0→7F4 (705 nm). The concentration quenching occurs when Eu3+ mol fraction equals to 9%. When Eu3+and Sm3+ were co-doped, the luminous intensity of the emission spectrum was superior to the Eu3+ mono-doped, which explains the Sm3+ has a sensitization effect for Eu3+.
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31

Zhu, Kun, Haitao Lv, Yanmin Wang, and Zhidong Pan. "Synthesis and luminescent property of Sm3+ doped and (Sm3+, Zr4+) co-doped calcium stannate phosphors via co-precipitation and sintering." Optical Materials 120 (October 2021): 111456. http://dx.doi.org/10.1016/j.optmat.2021.111456.

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32

Jeong, Junho, Vengala Rao Bandi, Bhaskar Kumar Grandhe, Kiwan Jang, Ho Sueb Lee, Soung Soo Yi, and Jung Hyun Jeong. "Photoluminescence Characteristics of Reddish-orange Eu3+ or Sm3+ Singly-doped and Eu3+ and Sm3+ Co-doped KZnGd(PO4)2 Phosphors." Journal of the Korean Physical Society 58, no. 2 (February 15, 2011): 306–10. http://dx.doi.org/10.3938/jkps.58.306.

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33

Öztürk, Esra, and Nilgun Ozpozan Kalaycioglu. "MgAl2Si2O8:Mn4+ Systems Doped with Co-Activator for Optoelectronic Applications." Solid State Phenomena 230 (June 2015): 217–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.230.217.

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Mn4+ doped and Pr3+,4+, Sm3+, Gd3+, Tb3+,4+, Ho3+, Er3+, Tm3+ and Yb3+ co-doped MgAl2Si2O8-based phosphors were prepared by conventional solid state synthesis at 1300 °C. They were characterized by thermogravimetry (TG), differential thermal analysis (DTA), X-ray powder diffraction (XRD), photoluminescence (PL) and scanning electron microscopy (SEM). The luminescence mechanism of the phosphors, which showed broad red emission bands in the range of 600-715 nm and had a different maximum intensity when activated by UV illumination, was discussed. Such a red emission can be attributed to the intrinsic 2E→4A2 transitions of Mn4+.
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34

LI, Q., Y. F. ZHANG, Q. LIU, Z. L. WANG, and C. JU. "ENHANCED RED EMISSION OF 1D CaYAl3O7: Eu3+ PHOSPHOR VIA CO-DOPING Sm 3+ OR Li+ /Na+ /K+ PREPARED BY ELECTROSPINNING." Digest Journal of Nanomaterials and Biostructures 15, no. 4 (December 2020): 1153–64. http://dx.doi.org/10.15251/djnb.2020.154.1153.

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In this study, a series of one-dimensional CaYAl3O7: Eu3+ and CaYAl3O7: Eu3+, R (R = Sm3+or Li+ , K+ , Na+ ) phosphors were synthesized by electrospinning. The formation, structure and photoluminescence properties of the phosphors were examined by thermogravimetric differential thermal analysis (TG-DTA), x-ray powder diff raction (XRD), scanning electron microscope (SEM) and photoluminescence spectroscopy (PL). The results show that one-dimensional materials with well crystallization were obtained, and the diffraction peaks of the samples are in good agreement of standard card (JCPDS: 49-0605). The emission spectrum is dominated by a red peak centered at 617 nm due to the 5D0 → 7F2 transition of Eu3+ ions. Concentration quenching occurs when the Eu3+ concentration is about 13 mol %, and the critical transfer distance of the phosphor is also calculated. With the increase of the concentration of doped Sm3+ ions, the luminescent intensity increased, and reached the maximum at the Sm3+ concentration of 10 mol %. The energy transfer processes between Sm3+ and Eu3+ is investigated in detail. Furthermore, Li+ , Na+ and K+ ions were designed as charge compensators to maintain the charge balance of CaYAl3O7: Eu3+, and the luminescence intensities can be eff ectively enhanced, especially by Li+ ion.
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35

Dalhatu, Saddiq Abubakar, Rosli Hussin, Karim Deraman, Bulus Ibrahim, Yamusa Abdullahi, and Aliyu Mohammed. "Structural and luminescent characteristic of Sm3+ doped magnesium sulfide borate red phosphor for white LED." Malaysian Journal of Fundamental and Applied Sciences 13, no. 4 (December 26, 2017): 807–11. http://dx.doi.org/10.11113/mjfas.v0n0.690.

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Polycrystalline compositions based on MgO, SO3 and B2O3 have both scientific and technological importance because of their useful applications. Doping with rare earth elements not only due to a rearrangement in the structure, but also to variation in the luminescence properties. Magnesium sulfide borate doped samarium oxide (MgSBO3:Sm3+) phosphors were prepared by solid state reaction and their structural and luminescence characteristic were studied and reported. IR and Raman spectral studies have been made to explore the presence of functional groups and various structural units in the prepared Polycrystalline. The formation of SO4, BO4, BO3, B-O-B and S-O-B structural units have been investigated. The emission and excitation properties were studied. And the results show that the emission and excitation spectra of these phosphors can be excited by ultraviolet (UV) 341, 370 and 409 nm light, and emit green, yellow and red light with intense peak at 601 nm, which are nicely in accordance with the widely applied near- UV LED chip. The emission intensities of these phosphors were increased with increases doping concentration. Therefore, these phosphors are the promising luminescent material towards white red LED applications.
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36

Jiao, Haiyan, Peiyu Wang, Liwei Liu, and Yuhua Wang. "Effects of Ti4+ Ions on Fluorescence Properties of Sr2CeO4:Sm3+ Phosphors." Journal of Nanoscience and Nanotechnology 16, no. 4 (April 1, 2016): 3998–4002. http://dx.doi.org/10.1166/jnn.2016.11807.

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Ti4+-doped Sr2CeO4:Sm3+ phosphors were synthesized with the solid-state reaction method and the effects of doping Ti4+ on the photoluminescence properties were investigated in detail. A broad excitation band ascribed to the O2-–Ce4+ transition was observed in the range of 200 to 400 nm and with doping Ti4+ into Ce4+ sites, the intensity of charge transfer band of O2- →Ce4+ (300–370 nm) was significantly broaden and enhanced. As a result, the emission intensity of Sr2Ce1−xTixO4 has improved about 85% by doping 0.01 mol Ti4+. White emission of −Sr2-yCe0.99Ti0.01O4:ySm3+ at y ≤ 0.03 is due the co-existence of Ce4+ → O2- CT emission and 4G5/2–6HJ Sm3+ transitions whereas only the Sm3+ red emission prevails for 003<y≤0.15. The Sr1.99Ce0.99Ti0.01O4:0.01Sm3+ phosphor exhibited excellent color purity. Its chromaticity coordinate is measured to be (0.326, 0.322), which is close to the pure white (0.33, 0.33). The results showed that Sr1.99Ce0.99Ti0.01O4: 0.01Sm3+ phosphors could be considered as a potential single-phase white-emitting phosphor for white light-emitting diodes.
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37

Kamimura, Sunao, Hiroshi Yamada, and Chao-Nan Xu. "Strong light emission from stress-activated perovskite-related oxides." MRS Proceedings 1492 (2013): 117–22. http://dx.doi.org/10.1557/opl.2013.592.

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ABSTRACTWe report mechanoluminescence (ML) in Sm3+-doped Sr3Sn2O7 phosphors with perovskite-related structure. The ML from Sr3Sn2O7:Sm3+, emitted strong reddish-orange light upon compression, is clearly observable by naked eyes. Based on the comparison between ML spectrum and photoluminescence spectrum, the ML emission was identified to be due to electron transition from an excited state 4G5/2 to the ground state 6HJ (J = 5/2, 7/2, 9/2) in Sm3+ ions. Although the ML emission was gradually decayed as compressive load was applied repeatedly, it recovered completely upon irradiation with UV light (254 nm). This behavior indicating that ML of Sr3Sn2O7:Sm3+ is intimately related to the charge traps. The charge transfer state (CTS) band in the PL excitation spectra was observed for Sr3Sn2O7:Sm3+, indicating that the efficient energy transfer from the host to the Sm3+ ions. The formation of CTS and the charge traps may be responsible for this ML performance.
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38

Lojpur, Vesna, Zeljka Antic, Radenka Krsmanovic, Mina Medic, Marko Nikolic, and Miroslav Dramicanin. "Thermographic properties of Eu3+ and Sm3+ doped Lu2O3 nanophosphor." Journal of the Serbian Chemical Society 77, no. 12 (2012): 1735–46. http://dx.doi.org/10.2298/jsc121021140l.

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The samples, Lu2O3:Eu3+ (3at.% Eu) and Lu2O3:Sm3+ (1at.% Sm), were prepared via polymer complex solution method using polyethlylene-glyocol as the fuel and as nucleation agent for crystallization process. Knowing that lutetium oxide has high chemical stability and temperature resistance, in this paper we investigated possibility for its application in high-temperature phosphor thermometry. It is a non-contact technique that uses the thermal dependence of phosphor fluorescence to measure temperature remotely. The structural and morphological properties were performed through X-ray powder diffraction (XRPD) and transmission electron microscopy (TEM) investigations. The obtained results confirmed that this synthesis yields desired crystalline structure with particle size in the range from 30 to 50 nm. Photoluminescence emission measurements were recorded in the temperature range from room up to 873 K. The accomplished results demonstrate the performance of Eu3+ and Sm3+ doped Lu2O3 as high temperature thermographic phosphors of very good sensitivity.
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39

Liu, Junshan, Shengjuan Dong, Longpan Zhu, Shikao Shi, Jiye Wang, and Lianshe Fu. "Preparation, luminescence and potential application of rare earth Sm3+ -doped fluorphlogopite phosphors." Journal of Luminescence 244 (April 2022): 118685. http://dx.doi.org/10.1016/j.jlumin.2021.118685.

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40

Jeong, Jung Hyun, Yeqing Chen, Hyun Kyoung Yang, Jong Won Chung, Byung Kee Moon, Haeyong Choi, and Jung Hwan Kim. "Luminescence Properties and Crystallinity of Sm3+-doped NaGd(WO4)2 Powder Phosphors." Journal of the Korean Physical Society 57, no. 6(1) (December 15, 2010): 1760–63. http://dx.doi.org/10.3938/jkps.57.1760.

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41

Wu, Meihua, Siyuan Liu, Yichao Sun, Wen Chen, Lingfeng Huang, Guoliang Chen, and Zishan Zheng. "Energy transfer of wide band long persistent phosphors of Sm3+-Doped ZrSiO4." Materials Chemistry and Physics 251 (September 2020): 123086. http://dx.doi.org/10.1016/j.matchemphys.2020.123086.

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42

Deng, Yaomin, Shuangping Yi, Jun Huang, Weiren Zhao, and Jieqiang Xian. "Synthesis and luminescence properties of Sm3+-doped La2WyMo2−yO9 orange-red phosphors." Physica B: Condensed Matter 433 (January 2014): 133–37. http://dx.doi.org/10.1016/j.physb.2013.10.028.

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43

Li, Guifang, Shuo Gao, and Wenwen He. "Preparation and photoluminescence properties of the Sm3+, Eu3+ co-doped CaWO4 phosphors." Optik 126, no. 21 (November 2015): 3272–75. http://dx.doi.org/10.1016/j.ijleo.2015.07.192.

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44

Liu, Guangsheng, Ying Zhang, Jiang Yin, and W. F. Zhang. "Enhanced photoluminescence of Sm3+/Bi3+ co-doped Gd2O3 phosphors by combustion synthesis." Journal of Luminescence 128, no. 12 (December 2008): 2008–12. http://dx.doi.org/10.1016/j.jlumin.2008.06.013.

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45

Yu, Ruijin, Hyeon Mi Noh, Byung Kee Moon, Byung Chun Choi, Jung Hyun Jeong, Ho Sueb Lee, Kiwan Jang, and Soung Soo Yi. "Photoluminescence characteristics of Sm3+-doped Ba2CaWO6 as new orange–red emitting phosphors." Journal of Luminescence 152 (August 2014): 133–37. http://dx.doi.org/10.1016/j.jlumin.2014.01.074.

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46

Yu, Ruijin, Yue Guo, Lili Wang, Hyeon Mi Noh, Byung Kee Moon, Byung Chun Choi, and Jung Hyun Jeong. "Characterizations and optical properties of orange–red emitting Sm3+-doped Y6WO12 phosphors." Journal of Luminescence 155 (November 2014): 317–21. http://dx.doi.org/10.1016/j.jlumin.2014.06.041.

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47

Xiao, P., J. J. Zhang, L. F. Shen, Z. Q. Wang, E. Y. B. Pun, and H. Lin. "Color tunability of Sm3+ doped antimony–phosphate glass phosphors showing broadband fluorescence." Journal of Luminescence 178 (October 2016): 147–55. http://dx.doi.org/10.1016/j.jlumin.2016.05.052.

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48

Liu, Lijuan, Panli You, Guangfu Yin, Xiaoming Liao, Zhongbing Huang, Xianchun Chen, and Yadong Yao. "Preparation and photoluminescence properties of the Eu2+, Sm3+ co-doped Li2SrSiO4 phosphors." Current Applied Physics 12, no. 4 (July 2012): 1045–51. http://dx.doi.org/10.1016/j.cap.2012.01.005.

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49

Yi, Shuangping, Xiaoxue Hu, Boxin Liang, Gengqiao Hu, Weiren Zhao, and Yinhai Wang. "Synthesis and photoluminescence properties of Ln3+ (Ln3+ = Sm3+/Eu3+) doped Na2NbAlO5 phosphors." Journal of Luminescence 207 (March 2019): 105–13. http://dx.doi.org/10.1016/j.jlumin.2018.11.007.

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50

Ekmekçi, Mete Kaan, Mustafa İlhan, Ali Sadi Başak, and Sabahattin Deniz. "Structural and Luminescence Properties of Sm3+ Doped TTB -Type BaTa2O6 Ceramic Phosphors." Journal of Fluorescence 25, no. 6 (September 26, 2015): 1757–62. http://dx.doi.org/10.1007/s10895-015-1663-5.

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