浏览全部资源
扫码关注微信
白光LED用Li+/La3+共掺杂BaSi2O5:Eu2+绿光发射荧光粉的制备及其发光性能和热稳定性
Preparation, Luminescence and Thermal Stability of Li+/La3+ Co-doped Single-phased BaSi2O5: Eu2+ Green Emitting Phosphors for White LEDs
- 发光学报 2020年41卷第3期 页码：271-280
- 作者机构：
东北师范大学 物理学院,吉林 长春,130024
- 作者简介：
- 基金信息：国家自然科学基金（11674050，11874103）资助项目()
DOI：10.3788/fgxb20204103.0271
中图分类号： O482.31收稿日期：2019-11-24，
修回日期：2019-12-30，
网络出版日期：2019-12-31，
纸质出版日期：2020-03-05
- 稿件说明：
移动端阅览
黄晓松, 姜荣云, 杨健等. 白光LED用Li<sup>+</sup>/La<sup>3+</sup>共掺杂BaSi<sub>2</sub>O<sub>5</sub>:Eu<sup>2+</sup>绿光发射荧光粉的制备及其发光性能和热稳定性[J]. 发光学报, 2020,41(3): 271-280
HUANG Xiao-song, JIANG Rong-yun, YANG Jian etc. Preparation, Luminescence and Thermal Stability of Li<sup>+</sup>/La<sup>3+</sup> Co-doped Single-phased BaSi<sub>2</sub>O<sub>5</sub>: Eu<sup>2+</sup> Green Emitting Phosphors for White LEDs[J]. Chinese Journal of Luminescence, 2020,41(3): 271-280
黄晓松, 姜荣云, 杨健等. 白光LED用Li<sup>+</sup>/La<sup>3+</sup>共掺杂BaSi<sub>2</sub>O<sub>5</sub>:Eu<sup>2+</sup>绿光发射荧光粉的制备及其发光性能和热稳定性[J]. 发光学报, 2020,41(3): 271-280 DOI： 10.3788/fgxb20204103.0271.
HUANG Xiao-song, JIANG Rong-yun, YANG Jian etc. Preparation, Luminescence and Thermal Stability of Li<sup>+</sup>/La<sup>3+</sup> Co-doped Single-phased BaSi<sub>2</sub>O<sub>5</sub>: Eu<sup>2+</sup> Green Emitting Phosphors for White LEDs[J]. Chinese Journal of Luminescence, 2020,41(3): 271-280 DOI： 10.3788/fgxb20204103.0271.
摘要
通过Li
+
/La
3+
同比例共掺杂策略，在氢气气氛下烧结制备了Li
0.06
La
0.06
Ba
0.84
Si
2
O
5
:4% Eu
2+
（LLBSO:Eu
2+
）高效绿色发光荧光粉。相比于未掺杂样品Ba
0.96
Si
2
O
5
:4% Eu
2+
（BSO:Eu
2+
），Li
+
/La
3+
共掺有助于单一相LLBSO:Eu
2+
荧光粉的合成，能有效降低烧结的温度和缩短合成时间。我们发现该策略节约荧光粉合成成本的同时，也可以显著提高其光学性能。相关测试表明，Li
+
/La
3+
共掺杂样品平均颗粒尺寸主要分布在1.1~2.7 m，颗粒团聚现象不明显，符合涂覆LED芯片要求。该样品可以有效地被365 nm近紫外LED芯片激发，产生位于502 nm的强的宽带绿光发射，其归属于Eu
2+
的5d-4f跃迁，发光强度是未掺杂样品的168%。此外，LLBSO:Eu
2+
荧光粉在150℃时发光强度仍保持在室温时的98%左右，具有良好的热稳定性。该样品CIE坐标位于绿光区（0.217，0.410）。通过绿粉/红粉和绿粉/红粉/蓝粉混粉策略，制得了色温为2 918~4 037 K的白色发光LED，其显色指数（
Ra
）均大于85，具有良好的热稳定性。实验结果表明，Li
+
/La
3+
共掺单一相的BSO:Eu
2+
绿色发光荧光粉是制备近紫外激发白光发射LED的优良候选荧光粉材料。
Abstract
Li
+
/La
3+
co-doped Li
0.06
La
0.06
Ba
0.84
Si
2
O
5
:4% Eu
2+
(LLBSO:Eu
2+
) green-emitting phosphors were prepared through a high-temperature solid state reaction. Compared with undoped Ba
0.96
Si
2
O
5
:4% Eu
2+
(BSO:Eu
2+
) sample
it can be found that Li
+
/La
3+
co-doping is an efficient strategy for synthesizing single-phased LLBSO:Eu
2+
at lower temperature in less synthesis time. Our results indicate that this strategy can lead to not only the reduced cost but also the improved optical performances. The related tests suggest that
for Li
+
/La
3+
co-doped BSO:Eu
2+
phosphors
the particle size is in the range of 1.1-2.7 m and no obvious aggregation can be found
suggesting that it meets the requirements for coating LED chips. Upon near-ultraviolet LED chip (365 nm) excitation
LLBSO:Eu
2+
exhibits a strong broadband emission around 502 nm
which is attributed to the 5d-4f transition of Eu
2+
. Its luminescent intensity reaches 168% as strong as that of the undoped sample. Furthermore
for LLBSO:Eu
2+
phosphor
the luminescent intensity measured at 150℃ is~98% as strong as that measured at room temperature
suggesting it has good thermal stability. The CIE coordinate of LLBSO:Eu
2+
phosphors is (0.217
0.410)
which locates in the green light region. White LEDs with different color temperatures ranging from 2 918 K to 4 037 K
were fabricated using blend strategies. These LEDs exhibit high color rendering index (
Ra
>
85) and good thermal stability. Our studies suggest that LLBSO:Eu
2+
green-emitting phosphor is one kind of candidates for fabricating near-ultraviolet excited white LEDs.
关键词
Keywords
references
WANG L Y,SONG E H,DENG T T,et al.. Luminescence properties and warm white LED application of a ternary-alkaline fluoride red phosphor K2NaAlF6:Mn4+[J]. Dalton Trans., 2017,46(30):9925-9933.
XI L Q,PAN Y X,ZHU M M,et al.. Room-temperature synthesis and optimized photoluminescence of a novel red phosphor NaKSnF6:Mn4+ for application in warm WLEDs[J]. J. Mater. Chem. C, 2017,5(36):9255-9263.
曾琦华,张信果,梁宏斌,等. 白光LED用荧光粉的研究进展[J]. 中国稀土学报, 2011,29(1):8-17. ZENG Q H,ZHANG X G,LIANG H B,et al.. Progress of research on phosphors for white-light emitting diodes[J]. J. Chin. Rare Earth Soc., 2011,29(1):8-17. (in Chinese)
ZHOU Z Z,LIU G H,NI J,et al.. Simultaneous multi-wavelength ultraviolet excited single-phase white light emitting phosphor Ba1-x(Zr,Ti)Si3O9:xEu[J]. Opt. Mater., 2018,79:53-62.
ZHONG J Y,ZHAO W R,DU F,et al.. Identifying the emission centers and probing the mechanism for highly efficient and thermally stable luminescence in the La3Si6N11:Ce3+ phosphor[J]. J. Phys. Chem. C, 2018,122(14):7849-7858.
CHEN H T,HUANG X F,HUANG W G. Spectral redshift mechanism of N doped Sr2SiO4:Eu2+ phosphors[J]. Optik, 2018,164:289-296.
LI S C,YU L X,MAN X Q,et al.. Photoluminescent properties of Eu3+-Eu2+ activated MAl2SixO2x+4 (M=Mg,Ca,Sr,Ba) phosphors prepared in air[J]. Luminescence, 2018,33(2):391-398.
ZHOU D S,ZHANG W T,YAN G L,et al.. Synthesis and luminescence properties of Sr2-xYxSi50-xAlxN8:Eu2+ red phosphor for white light-emitting diodes[J]. J. Mater. Sci., 2018,53(14):10240-10248.
GORELOVA L A,BUBNOVA R S,KRIVOVICHEV S V,et al.. Thermal expansion and structural complexity of Ba silicates with tetrahedrally coordinated Si atoms[J]. J. Solid State Chem., 2016,235:76-84.
YAO Y L,ZHOU Z F. Photoluminescence characteristics of a novel red phosphor Ba2Si4O10:Eu3+:structural effect and concentration quenching mechanism[J]. J. Lumin., 2016,179:408-421.
ZHANG Q,WANG Q,WANG X C,et al.. Luminescence properties of Eu2+-doped BaSi2O5 as an efficient green phosphor for light-emitting devices and wide color gamut field emission displays[J]. New J. Chem., 2016,40(10):8549-8555.
CAO D H,WANG H,WEI H J,et al.. Preparation,electronic structure,and photoluminescent properties of Eu2+ activated BaSi2O5 powder phosphors for solid-state lighting[J]. J. Semicond., 2015,36(12):123008.
CHEN L,LIN C C,YEH C W,et al.. Light converting inorganic phosphors for white light-emitting diodes[J]. Materials,2010,3(3):2172-2195.
JIA Y L,SUN W Z,PANG R,et al.. Sunlight activated new long persistent luminescence phosphor BaSiO3:Eu2+,Nd3+,Tm3+:optical properties and mechanism[J]. Mater. Des., 2016,90:218-224.
LEI W,ZOU Z Y,CHEN Z H,et al.. Controllable f value of barium silicate microwave dielectric ceramics with different Ba/Si ratios[J]. J. Am. Ceram. Soc., 2018,101(1):25-30.
黄冕,杜蒙亚历山大,沈洋,等. 锂含量与烧结时间对固体电解质Li7La3Zr2O12电导率的影响[J]. 硅酸盐学报, 2013,41(8):1042-1045. HUANG M,ALEXNDRE D,SHEN Y,et al.. Effect of lithium content and sintering time on conductivity of Li7La3Zr2O12 as solid electrolyte[J]. J. Chin. Ceram. Soc., 2013,41(8):1042-1045. (in Chinese)
AWAKA J,KIJIMA N,HAYAKAWA H,et al.. Synthesis and structure analysis of tetragonal Li7La3Zr2O12 with the garnet-related type structure[J]. J. Solid State Chem., 2009,182(8):2046-2052.
WANG Q Y,DONG Y,SHAO Q Y,et al.. The effect of Li3N flux on properties of Sr2Si5N8:Eu2+ phosphor[J]. Mater. Des., 2016,95:618-622.
BIAN H Y,LIU Y X,YAN D T,et al.. Spectral modulation through controlling anions in nanocaged phosphors[J]. J. Mater. Chem. C, 2013,1(47):7896-7903.
过诚,丛妍,董斌,等. (Zn1-x,Mgx)2GeO4:Mn2+的荧光以及长余辉发光性能[J]. 发光学报, 2017,38(9):1161-1166. GUO C,CONG Y,DONG B,et al.. Photoluminescence and long-lasting phosphorescence characteristics of (Zn1-x,Mgx)2GeO4:Mn2+[J]. Chin. J. Lumin., 2017,38(9):1161-1166. (in Chinese)
FAN J,ZHANG W T,DAI S Y,et al.. Effect of charge compensators A+(A=Li,Na and K) on luminescence enhancement of Ca3Sr3(PO4)4:Sm3+ orange-red phosphors[J]. Ceram. Int., 2018,44(16):20028-20033.
肖玲,周建,刘桂珍. Li+掺杂Sr2MgSi2O7:Eu2+,Dy3+长余辉材料的发光性能[J]. 发光学报, 2017,38(9):1143-1148. XIAO L,ZHOU J,LIU G Z. Luminescent properties of Li+doped Sr2MgSi2O7:Eu2+,Dy3+ phosphors[J]. Chin. J. Lumin., 2017,38(9):1143-1148. (in Chinese)
LIANG C P,HUANG X F,HUANG W G. Synthesis and luminescence properties of Li+,Bi3+ ions co-doped CaSiO3:Eu3+ red emitting phosphors[J]. J. Mater. Sci.:Mater. Electr., 2018,29(13):11271-11279.
SHANG M M,LIANG S S,QU N R,et al.. Influence of anion/cation substitution (Sr2+ Ba2+,Al3+ Si4+,N3O2-) on phase transformation and luminescence properties of Ba3Si6O15:Eu2+ phosphors[J]. Chem. Mater., 2017,29(4):1813-1829.
PENG B,SONG K X,WANG H W,et al.. Investigation on Ce3+ luminescence from different crystallographic sites,self energy transfer and abnormal thermal stability of nitrided Ba9Y2Si6O24:Ce3+ phosphor for W-LEDs[J]. Ceram. Int., 2018,44(6):6584-6589.
CUI D P,SONG Z,XIA Z G,et al.. Synthesis,structure and luminescence of SrLiAl3N4:Ce3+ phosphor[J]. J. Lumin., 2018,199:271-277.
TANG Z B,ZHANG G Y,WANG Y H. Design and development of a bluish-green luminescent material (K2HfSi3O9:Eu2+) with robust thermal stability for white light-emitting diodes[J]. ACS Photon., 2018,5(9):3801-3813.
ZHONG J Y,ZHAO W R,DU F,et al.. Identifying the emission centers and probing the mechanism for highly efficient and thermally stable luminescence in the La3Si6N11:Ce3+phosphor[J]. J. Phys. Chem. C, 2018,122(14):7849-7858.
SONG Z,LIU X L,HE L Z,et al.. Correlation between the energy level structure of cerium-doped yttrium aluminum garnet and luminescent behavior at varying temperatures[J]. Mater. Res. Exp., 2016,3(5):055501.
WANG W R,YANG T Q,LIU Y L,et al.. Photoluminescence properties and efficient energy transfer of Ce3+/Eu2+ activated K2Ba7Si16O40 phosphors[J]. Mater. Res. Bull., 2018,101:232-239.
ANNADURAI G,DEVAKUMAR B,SUN L L,et al.. Crystal structure,photoluminescence properties and thermal stability of BaLu2Si3O10:Eu3+ red-emitting phosphors with high color purity for near-UV-excited white LEDs[J]. J. Lumin., 2019,215:116623.
0
浏览量
110
下载量
2
CSCD
- 网络PDF下载
- Meta-XML下载
- BibTeX下载
- Endnote下载
- RefMan 下载
- NoteExpress下载
- NoteFirst下载
关联资源
相关文章
相关作者
相关机构
AI问答- 地址：长春市经济技术开发区东南湖大路3888号 邮编：130033
- 联系电话：0431-86176862 Email：fgxbt@126.com
- 本系统由Light学术出版中心、北京北大方正电子有限公司共建 吉ICP备11002662号-17
京公网安备11010802024621 - 本系统建议在Chrome、 IE9+ 以上版本浏览器阅读本站内容，360浏览器请切换至极速模式
- Cookies帮助我们提供服务并提供个性化体验。使用本网站，即表示您同意我们使用Cookies
