Using borate as the matrix material,spherical and sea urchin-like silicon nanospheres with varying specific surface areas were prepared as precursors through sol-gel-high-temperature solid phase method.Single-doped YBO3∶Eu3+ and co-doped YBO3∶Eu3+,Tb3+-coated SiO2 nanosphere core-shell structured fluorescent materials were synthesized by co-precipitation method-temperature solid phase method.The morphology and the luminescent performance of the generated fluorescent materials were analyzed using XRD,FT-IR,SEM,TEM,fluorescence spectrum representation,and CIE chromaticity calculations.The results proved that after doping with Eu3+,a slight distortion in the YBO3 lattice occurred,accompanied by minor shifts in absorption peaks in the FT-IR spectrum,which proved that Eu3+ was successfully doped into the YBO3 lattice.YBO3 was wrapped on the surface of the SiO2 core with a block structure.Under the excitation of 395nm light,the emission peak strength at 612nm of the single-doped Eu3+ fluorescent material was the strongest,which was a 5D0→7F2 electric puppet transition of Eu3+.The matrix material exhibited self-excited blue light under 456 nm light excitation.Tb3+ with green light was added for white light modulation.Under 275 nm excitation,the SiO2@YBO3∶5% Eu3+,7% Tb3+ produced chromaticity coordinate of (0.3130,0.2936),with a correlated color temperature of 6834.43K and color purity of 7.4%,making it a near-white light core-shell structured fluorescent material with potential for WLED core-shell composite application.
[1] Gao Fei,Zhao Xinyu,Liu Jinglin.A facile method for the fabrication of luminescent Eu3+-doped SiO2 nanowires[J].Gels,2022,8(5):286-286.
[2] Xiao Peiwen,Zhao Li,Sui Zhuyin,et al.Synthesis of core-shell structured porous nitrogen-doped carbon@silica material via a sol-gel method[J].Langmuir:the ACS Journal of Surfaces and Colloids,2017,33(24):6038-6045.
[3] Hines Adrian T,Morrison Gregory,Yarbrough Brandon J,et al.Luminescence of alkali rare earth borates A3Ln(BO3)2(A=Na,K;Ln=Eu,Tb)[J].Solid State Sciences,2023,138:107130.
[4] Ahmed N A,Afif F,Said T K,et al.Correction to:microstructural,optical,and electrical properties of Eu3+,Tb3+ co-doped ZnO micropods elaborated by chemical bath deposition on a p-Si substrate[J].the European Physical Journal Plus,2022, 137(9):1097.
[5] Fang Lizhi,Zhou Xiong,Zhao Zhiwei,et al.Luminescent characteristics of Tm3+/Tb3+/Eu3+ tri-doped Na5Y9F32 single crystals for white emission with high thermal stability[J].Chinese Physics B,2022,31(12):544-549.
[6] 金莹,邓繁艳,宁聪琴.CTAB添加量对硅-磷灰石成分和形貌的调控研究[J].上海师范大学学报(自然科学版),2023,52(1):8-14.
[7] 年洪恩,周园,吴志坚,等.溶胶-凝胶法合成Eu3+掺杂YBO3薄膜及其结构与光致发光性能的研究(英文)[J].人工晶体学报,2015,44(3):599-603.
[8] Manju Gopinath R J,Gopi S,Simon M S,et al.Spectroscopic analysis of Eu3+ doped silica-titania-polydimethylsiloxane hybrid ORMOSILs[J].RSC Advances,2020,10(34):20057-20066.
[9] Al-Ghamdi H,Alsaif N A M,Khattari Z Y,et al.Co-doped yttria borate glasses:investigation of physical,FT-IR spectroscopy,optical and radiation interaction characteristics[J].Journal of Materials Science.Materials in Electronics,2023,34(14):1180.
[10] 张中秋,刘新贵.高亮度LED用氯硅酸盐荧光材料的合成及光谱特性研究[J].广东化工,2017,44(15):127-129.
[11] 邹丹,马永青.碳纳米管模板对YBO3∶5% Eu3+结构、形貌及光致发光的影响(英文)[J].安徽大学学报(自然科学版),2015,39(1):46-51.
[12] Rangari V V,Singh V,Dhoble S J.Synthesis and photoluminescence characteristics of (Y,Gd)BO3∶RE (RE=Eu3+,Ce3+,Dy3+ and Tb3+) phosphors for blue chip and near-UV white LEDs[J].Luminescence:the Journal of Biological and Chemical Luminescence,2016,31(2):600-608.
[13] 郝斌,赵文武,郁建元,等.荧光材料Ba(5-3x/2)B4O(11)∶xEu3+的制备及发光性能[J].应用化学,2019,36(5):548-553.
[14] Blasse G.Energy transfer in oxidic phosphors[J].Physics Letters A,1968,28(6):444-445.
[15] Zeng X,Im S J,Jang S H,et al.Luminescent properties of (Y,Gd)BO3∶Bi3+,RE3+ (RE=Eu,Tb) phosphor under VUV/UV excitation[J].Journal of Luminescence,2006,121(1):1-6.
[16] Zou D,Ma Y Q,Qian S B,et al.Improved luminescent properties of novel nanostructured Eu3+ doped yttrium borate synthesized with carbon nanotube templates[J].Journal of Alloys & Compounds,2014,584:471-476.
[17] Huang X,Guo H,Li B.Eu3+-activated Na2Gd(PO4)(MoO4):a novel high-brightness red-emitting phosphor with high color purity and quantum efficiency for white light-emitting diodes[J].Journal of Alloys and Compounds,2017,720:29-38.
[18] Hargunani P S,Sonekar P R,Palaspagar S R,et al.Blue luminescent phosphor Sr3Y1-X(BO3)3∶XBi3+ for WLED applications[J].Macromolecular Symposia,2019,387(1):1800184.
[19] Hu D,Xiao R,Lv X,et al.Construction of thermally stable Tb3+-activated green-emitting phosphors:dual driving strategy of doping concentration and excitation wavelength[J].Dalton transactions,2024,53:5202-5211.
[20] Zhao H,Ran Y,Miao X,et al.Synthesis,optical properties,and applications of Eu3+,Na+-doped high-color-purity Sr3MgNb2O9 red phosphors for w-LEDs and the detection of latent fingerprints[J].Inorganic Chemistry Communications,2024,168:112922-112922.
[21] 胡正开,杨伟斌,熊飞兵,等.Sm3+掺杂Na5Y(MoO4)4-y(WO4)y高热稳定性荧光材料的制备及发光性能研究[J].人工晶体学报,2024,53(6):1016-1025.
[22] Semin O,Youngshin K.A hue and warm-cool model for warm-cool based correlated color temperature calculation[J].Color Research Application,2021,47(4):953-965.
[23] Zhang X,Huang Y,Gong M.Dual-emitting Ce3+,Tb3+ co-doped LaOBr phosphor:luminescence,energy transfer and ratiometric temperature sensing[J].Chemical Engineering Journal,2017,307:291-299.
[24] Singh R S N S.Excitation and activator concentration induced color tuning and white light generation from Bi3+ sensitized Y2O3∶Eu3+:energy transfer studies[J].Journal of Alloys and Compounds:an Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2021,875(1):160059.
基金资助
内蒙古自治区自然科学基金项目(2023LHMS02012)
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