| 159 | 0 | 22 |
| 下载次数 | 被引频次 | 阅读次数 |
采用溶胶-凝胶法制备了一种Ca0.5Mo0.96O4∶0.25Eu3+、0.04Si4+、0.25Li+红色荧光粉,并使用X射线衍射(XRD)、扫描电子显微镜(SEM)和荧光光谱仪对其结构、形貌和发光性能进行了表征和研究。结果表明Ca0.5Mo0.96O4∶0.25Eu3+,0.04Si4+,0.25Li+红色荧光粉可以在395、466和537 nm处同步激发,最佳的激发波长为绿光537 nm,主要的红色发射峰位于618 nm。红色荧光粉最佳的退火温度和Eu3+掺杂量分别为800℃和0.25 mol,相较于未掺杂Si4+和Li+的红色荧光粉,发射强度可以提高8倍。这种红色荧光粉可以应用到白光发光二极管(LED)中,因为它分别在近紫外光、蓝光和绿光或它们的混合光的激发下都发出强烈的红光。在白光LED中(红绿蓝三色荧光粉混合),可以通过近紫外光有效激发蓝色荧光粉发出蓝光,蓝光可以激发绿色荧光粉发出绿光,绿光可以有效激发Ca0.5Mo0.96O4∶0.25Eu3+,0.04Si4+,0.25Li+荧光粉产生红光。相信这种红色荧光粉可以很好地用于商业领域。
Abstract：Ca0.5Mo0.96O4∶0.25 Eu3+,0.04 Si4+,0.25 Li~+red phosphor was prepared by the solgel method.The structures,morphology and luminescent properties were characterized and studied by X-ray diffraction(XRD),scanning electron microscopy(SEM)and fluorescence spectrometer.The results show that the Ca0.5Mo0.96O4∶0.25 Eu3+,0.04 Si4+,0.25 Li~+red phosphor can be synchronously excited at the wavelengths of 395,466 and 537 nm,the optimal excitation wavelength is green light of 537 nm,and the main red emission peak wavelength of the phosphor locates at 618 nm.The optimal annealing temperature and Eu3+ doping amount of the red phosphor are 800 ℃ and 0.25 mol,respectively.Compared with the red phosphors without Si4+ and Li+,the emission intensity of the red phosphor can be enhanced by 8 times.The red phosphor emits a strong red light under the excitation of near-ultraviolet,blue,and green light or their mixed light,respectively,thus it can be applied to white light-emitting diodes(LEDs).In white LEDs(mixed red,green and blue phosphors),the blue phosphor can be excited effectively by near ultraviolet light to emit blue light,and the green phosphor can be excited by blue light to emit green light,and further the Ca0.5Mo0.96O4∶0.25 Eu3+,0.04 Si4+,0.25 Li+ phosphor can be excited by the green light effectively to produce red light.It is believed that the red phosphor can be well used in the commercial field.
[1]徐曼，唐高，史宏声，等．白光LED用phosphor-on-glass(PoG）材料的制备与表征[J]．人工晶体学报，2019,48(7):1218-1224．
[2]LIU X Y.Development perspective of LED and backlight[J].Lamps&Lighting,2008,12 (4):14-17．
[3]GONG Q,HU Z,DEIBERT B J,et al.Solution processable MOF yellow phosphor with exceptionally high quantum efficiency[J].Journal of the American Chemical Society,2014,136 (48):16724-16727．
[4]WU D,YE X Y,HUANG X,et al.Synthesis and photoluminescence properties of(Sc,Y)(VO4,BO3）∶Eu3+red phosphor[J].Chinese Journal of Rare Metals,2016,40:440-445．
[5]YE S,XIAO F,PAN Y X,et al.Phosphors in phosphor-converted white light-emitting diodes:recent advances in materials,techniques and properties[J].Materials Science and Engineering:R,2010,71 (1):1-34．
[6]ZHANG Y M,YANG F D,YANG J,et al.Synthesis of crystalline SrMoO4 nanowires from polyoxometalates[J].Solid State Communications,2005,133 (12):759-763．
[7]MARQUES A P,de MELO D M A,PASKOCIMAS C A,et al.Photoluminescent BaMoO4nanopowders prepared by complex polymerization method(CPM)[J].Journal of Solid State Chemistry,2006,179 (3):671-678．
[8]王永锐，耿秀娟，解吉星，等．Dy3+,Tm3+掺杂的NaGd(MoO4)2白色荧光粉的制备与发光性能的研究[J]．光电子·激光，2019 (10):1043-1049．
[9]ZHOU L,DU P,YU J S.Near-ultraviolet light-induced dazzling red emission in CaGd2 (MoO4)4∶2xSm3+compounds for phosphor-converted WLEDs[J].Journal of the American Ceramic Society,2019,102 (9):5353-5364．
[10]BI W,MENG Q,SUN W.Luminescent properties and energy transfer mechanism of NaGd (MoO4)2:Sm3+,Eu3+phosphors[J].Ceramics International,2016,42 (12):14086-14093．
[11]XUE J,NOH H M,PARK S H,et al.NUV light induced visible emission in Er3+-activated NaSrLa (MoO4)O3phosphors for green LEDs and thermometer[J].Journal of the American Ceramic Society,2020,103 (2):1174-1186．
[12]RAJENDRAN M,VAIDYANATHAN S.New red emitting phosphors NaSrLa (MO4)3∶Eu3+[M=Mo and W]for white LEDs:synthesis,structural and optical study[J].Journal of Alloys and Compounds,2019,789:919-931．
[13]YIN X,LIU L,YANG J,et al.Luminescent property of Y2O2S∶Eu3+nanophosphors prepared by molten salt synthesis[J].Inorganic and Nano-Metal Chemistry,2019,49(7):198-203．
[14]GUO C F,HUANG D X,SU Q.Methods to improve the fluorescence intensity of CaS∶Eu2+red-emitting phosphor for white LED[J].Materials Science and Engineering:B,2006,130 (1/2/3):189-193．
[15]YANG Y L,LI X M,FENG W L,et al.Effect of surfactants on morphology and luminescent properties of CaMoO4∶Eu3+red phosphors[J].Journal of Alloys and Compounds,2011,509 (3):845-848．
[16]HUA Y B,YU J S.Broadband near-ultraviolet excited La2Mo2O9∶Eu3+red-emitting phosphors with high color purity for solid-state lighting[J].Journal of Alloys and Compounds,2019,783:969-976．
[17]FENG W L,JIN Y,WU Y,et al.Co-precipitation synthesis and photoluminescence properties of Ba1-xMoO4∶xEu3+red phosphors[J].Journal of Luminescence,2013,134:614-617．
[18]耿耀辉，徐生艳，张颖涛，等．Si 4+掺杂对Gd1.6 WO6∶0.4Eu3+荧光粉发光特性的影响[J]．光电子·激光，2014(3):496-500．
[19]JANG H S,YANG H,KIM S,et al.White light-emitting diodes with excellent color rendering based on organically capped CdSe quantum dots and Sr3SiO5∶Ce3+,Li+phosphors[J].Advanced Materials,2008,20 (14):2696-2702．
[20]WANG X M,ZHANG X,YE S,et al.A promising yellow phosphor of Ce3+/Li+doped CaSiN2-2δ/3 Oδfor pc-LEDs[J].Dalton Trans,2013,42 (14):5167-5173．
[21]YANG M Z,SUI Y,WANG S P,et al.Enhancement of upconversion emission in Y3Al5O12∶Er3+induced by Li+doping at interstitial sites[J].Chemical Physics Letters,2010,492 (1/2/3):40-43．
[22]CHEN G Y,LIU H C,SOMESFALEAN G,et al.Enhancement of the upconversion radiation in Y2O3∶Er3+nanocrystals by codoping with Li+ions[J].Applied Physics Letters,2008,92 (11):113114-1-113114-3.
基本信息:
DOI：10.13250/j.cnki.wndz.2020.10.012
中图分类号:TN312.8;TQ422
引用信息:
[1]周勤勤,王梦霞,伍月娜,等.一种Eu~(3+)、Si~(4+)和Li~+共掺杂红色荧光粉的制备（英文）[J].微纳电子技术,2020,57(10):841-848.DOI:10.13250/j.cnki.wndz.2020.10.012.
基金信息:
Science and Technology Planning Project of Guangdong Province ([2015]110,[2015]151,[2014]211);; Scientific Research and Innovation Team of Universities of Guangdong Province (2015KCXTD027)
2020-09-17
2020-09-17