Tb~(3+)/Sm~(3+)共掺杂荧光粉K_3Gd_3B_4O_(12)的制备和多色发光性能研究
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摘要
通过高温固相法制备了一系列K_3Gd_3B_4O_(12):xTb~(3+)(x=0.4-1.0),K_3Gd_3B_4O_(12):0.8Tb~(3+),ySm~(3+)(y=0.02-0.8)和K_3Gd_3B_4O_(12):0.1Sm~(3+)荧光材料.并对它们的结构、形貌和发光性能进行了系统研究,并通过荧光光谱对Tb~(3+)到Sm~(3+)的能量转移进行验证分析.另一方面,我们通过固定Tb~(3+)的含量,控制Sm~(3+)的掺杂量,可以得到从绿光、黄光、橙色光的发射.因此,K_3Gd_3B_4O_(12):0.8Tb~(3+),ySm~(3+)(y=0.02-0.8)材料可作为多色荧光粉在白光LED方面有着潜在的应用前景.
A series of Tb~(3+)-Sm~(3+)-codoped phosphors K_3Gd_3B_4O_(12):xTb~(3+)(x=0.4-1.0),K_3Gd_3B_4O_(12):0.8Tb~(3+),ySm~(3+)(y=0.02-0.8)and K_3Gd_3B_4O_(12):0.1Sm~(3+)have been prepared by a high-temperature solid-state reaction,and their crystal structure,morphology and luminescence properties have been investigated in detail.The energy transfer process from Tb~(3+)to Sm~(3+)Was verified through luminescence spectra.By controlling the doping content of the Sm~(3+)ions with the fixed Tb~(3+)content,the emission color of the obtained phosphors could be easily modulated from green to yellow and then to orange.All the results indicate that the series of K_3Gd_(3-y)B_4O_(12):0.8Tb~(3+),ySm~(3+)phosphors can be acted as a good multi-color phosphor for white light emitting diodes.
A series of Tb~(3+)-Sm~(3+)-codoped phosphors K_3Gd_3B_4O_(12):xTb~(3+)(x=0.4-1.0),K_3Gd_3B_4O_(12):0.8Tb~(3+),ySm~(3+)(y=0.02-0.8)and K_3Gd_3B_4O_(12):0.1Sm~(3+)have been prepared by a high-temperature solid-state reaction,and their crystal structure,morphology and luminescence properties have been investigated in detail.The energy transfer process from Tb~(3+)to Sm~(3+)Was verified through luminescence spectra.By controlling the doping content of the Sm~(3+)ions with the fixed Tb~(3+)content,the emission color of the obtained phosphors could be easily modulated from green to yellow and then to orange.All the results indicate that the series of K_3Gd_(3-y)B_4O_(12):0.8Tb~(3+),ySm~(3+)phosphors can be acted as a good multi-color phosphor for white light emitting diodes.
引文
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[3]李怀勇,房璐,李淼淼,等.微观组织及晶体结构对Y6WO12:Eu3+荧光性能的影响[J].聊城大学学报(自然科学版),2018,31(3),38-45.
[4]Zhang B W,Zou H F,Guan H G,et al.Lu2O2S:Tb3+,Eu3+nanorods:luminescence,energy transfer,and multicolour tuneable emission[J].Crystengcomm,2016,18:7620-7628.
[5]李金锋,李宝慧,刘学霞,等.红色荧光粉Sr9Zn1.5(PO4)7:Eu3+的制备及发光性质研究[J].聊城大学学报(自然科学版),2018,31(3):24-30.
[6]Wang D Y,Tang Z B,Khan W U,et al.Photoluminescence study of a broad yellow-emitting phosphor K2ZrSi2O7:Bi 3+[J].Chem Eng,2017,313:1082-1087.
[7]Selvalakshmi T,Sellaiyan S,Uedono A,et al.Investigation on photoluminescence,electrical and positron lifetime of Eu3+activated Gd2O3phosphors[J].Materials Chemistry and Physics,2015,166:73-81.
[8]Guo Y,Moon B K,Choi B C,et al.Fluorescence properties with red-shift of Eu2+emission in novel phosphor-silicate apatite Sr3LaNa(PO4)2SiO4phosphors[J].Ceramics International,2016,42(16):18324-18332.
[9]Xu D,Yu P,Tian L.Luminescence properties of Pr3+and Bi 3+co-doped NaCaTiNbO6 phosphor for red-LEDs[J].Journal of Rare Earths,2018,36(3):243-247.
[10]Li Z H,Zeng J H,Zhang G C,et al.A new promising phosphor,Na3La2(BO3)=:Ln(Ln=Eu,Tb)[J].Solid State Chem,2005,178:3624-3630.
[11]Li P,Wang Z J,Yang Z P,et al.Emission features of LiBaBO3:Sm3+red phosphor for white LED[J].Mater Lett,2009,63:751-753.
[12]Zou X,He L,Tan D,et al.Anneal-induced transformation of phase structure,morphology and luminescence of GdPO4:Sm3+nanomaterials synthesized by a hydrothermal method[J].Dalton Transactions,2017,46(9):2948-2956.
[13]Wang Z J,Lou S Q,Li P L.Luminescent properties and energy transfer of Sr3La(PO4)3:Sm3+,Eu3+for white LEDs[J].J Alloys Compd,2014,586:536-541.
[14]Gupta P,Bedyal A K,Kumar V,et al.Energy transfer mechanism from Gd3+to Sm3+in K3Gd(PO4)2:Sm3+phosphor[J].Materials Research Express,2015,2(7):076202.
[15]Wantana N,Kaewjaeng S,Kothan S,et al.Energy transfer from Gd3+to Sm3+and luminescence characteristics of CaO-Gd2O3-SiO2-B2O3scintillating glasses[J].Journal of Luminescence,2017,181:382-386.
[16]Gupta P,Bedyal A K,Kumar V,et al.Photoluminescence and thermoluminescence properties of Tb3+doped K3Gd(PO4)2nanophosphor[J].Materials Research Bulletin,2014,60:401-411.
[17]Meng F,Zhang X,Xu Y,et al.Photoluminescence of Eu2+,Ce3+and Tb3+in a new potassium barium phosphate K2Ba3(P2O7)2host lattice[J].Journal of Alloys and Compounds,2017,729:724-729.
[18]Zhang F,Wang Y H,Liu J D.Vacuum ultraviolet spectroscopic properties of KSrPO4:Tb3+[J].J Alloys Compd,2011,509:3852-3854.
[19]Zhu Z Z,Fu G S,Yang Y,et.al.Energy transfer,tunable luminescence,and thermal stability of Tb3+-Sm3+-codoped Na3Bi(PO4)2phosphors[J].J Mater Sci,2016,51:6944-6954.
[20]Li T,Li P L,Wang Z J,et.al.Structure,luminescence properties and energy transfer of Tb3+-Eu3+codoped LiBaB9O15phosphors[J].Dalton Trans,2015,44:16840-16846.
[21]傅和平,李水泉,张国营,等.稀土元素各级电离能的相关性方程的建立及其应用[J].聊城大学学报(自然科学版),1994,7(4):36-39.
[22]Won Y H,Jang H S,Im W B et al.Red-Emitting LiLa2O2BO3:Sm3+,Eu3+phosphor for near-ultraviolet light emitting diodes-based solid-state lighting[J].J Electrochem Soc,2008,155:226-229.
[23]An L Q,Zhang J,Liu M,et.al.Preparation and photoluminescence of Sm3+and Eu3+Doped Lu2O3phosphor[J].Opt Mater,2008,30:957-960.
[24]Fang Y C,Chu S Y,Kao P C,et.al.Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+,Eu3+red phosphors[J].J Electrochem Soc,2011,158:1-5.