首先用水热法合成了NaNbO3样品,然后用固相法分别合成了NaNbO3,NaNbO3:Er3+,NaNbO3:Sm3+样品,X射线衍射结果表明所制备的粉体NaNbO3(水热法200℃和固相法900℃退火),NaNbO3:Er3+(900℃退火),NaNbO3:Sm3+(900℃退火)为立方相结构,在退火温度800,950和1000℃时是正交晶系,长方体结构.该粉末在980 nm LD激发下,分别发射出中心波长约为526 nm绿色,547nm绿色和662 nm红色(掺Er3+)、526 nm绿色,550 nm绿色和660 nm红色(掺Sm3+)的上转换荧光.探讨了Er3+,Sm3+的上转换发光机制.研究了晶体的对称性和退火温度对NaNbO3:Er3+样品上转换发光强度的影响,结果表明,随着晶体的对称性降低和退火温度的提高,NaNbO3:Er3+样品的上转换发光强度增强.
参考文献
| [1] | 杨梅,刘其鹏,李东风,尤洪鹏,洪广言.Y0.78Yb0.2Er0.02F3多孔纳米粒子的合成与上转换发光[J].中国稀土学报,2008(04):426-431. |
| [2] | Hampl J;Hall M;Mufti N A;Yao YM,MacQueen D B,Wright W H,Cooper D E .Upconverting phosphor reporters in immunochromatographic assays[J].Analytical Biochemistry,2001,288:176. |
| [3] | 张向华,肖思国,丁庆磊,夏艳琴,刘政威.不同冷却方式对Er3+/Yb3+共掺BaF2粉末上转换发光效率的影响[J].硅酸盐通报,2006(06):67-71. |
| [4] | 郭艳艳,吴杏华,王殿元,常章用,王金亮,王庆凯,张玉霞.980 nm LD激发下稀土掺杂Gd_2Ti_2O_7粉末上转换发光[J].中国稀土学报,2009(06):735-738. |
| [5] | Cheng ZX;Ozawa K;Osada M;Miyazaki A;Kimura H .Low-temperature synthesis of NaNbO3 nanopowders and their thin films from a novel carbon-free precursor[J].Journal of the American Ceramic Society,2006(4):1188-1192. |
| [6] | Yiping Guo;Ken-ichi Kakimoto;Hitoshi Ohsato .Phase transitional behavior and piezoelectric properties of (Na_(0.5)K_(0.5))NbO_(3)-LiNbO_(3) ceramics[J].Applied physics letters,2004(18):4121-4123. |
| [7] | 郭海,董宁,周民杰,尹民,张慰萍,楼立人,夏上达.Er3+ ,Yb3+共掺杂SrTiO3超细粉末的可见上转换发光[J].发光学报,2006(01):53-58. |
| [8] | Vetrone F;Boyer J C;Capobianco J A;Speghini A,Bettinelli M .Effect of Yb3 + co-doping on the up-conversion emission in nanocrystalline Y2O3:Er3+[J].Journal of Physical Chemistry B,2003,107:1107. |
| [9] | Capobianco J A;Vetrone F;Boyer J C .Enhancement of red emission (4F9/2→4I15/2) via upconversion in bulk andnanocrystalline cubic Y2O3:Er3+[J].Journal of Physical Chemistry B,2002,106:1181. |
| [10] | Patra A;Friend C S;Kapoor R;Prasad P N .Upconversion in Er3+:ZrO2 nanocrystals[J].Journal of Physical Chemistry B,2002,106:1909. |
| [11] | Patra A.;Friend CS.;Kapoor R.;Prasad PN. .Fluorescence upconversion properties of Er3+-doped TiO2 and BaTiO3 nanocrystallites[J].Chemistry of Materials,2003(19):3650-3655. |
| [12] | de Figueiredo A T;Longo V M;de Lazaro S;Mastelaro V R,De Vicente F S,Hernandes A C,Li M S,Varela J A,Longo E .Blue-green and red photoluminescence in CaTiO3:Sm[J].Journal of Luminescence,2007,126:403. |
| [13] | 丁庆磊,肖思国,张向华,夏艳琴,刘政威.980 nm激发下Er3+/Yb3+共掺杂ZrO2-Al2O3粉末的上转换发光特性[J].物理学报,2006(10):5140-5144. |
| [14] | 刘金霞.退火温度对纳米晶ZrO2发光和ZrO2：Pr3+能量传递的影响[J].人工晶体学报,2009(01):240-244. |
| [15] | 刘金霞,汪建军.单斜相纳米晶ZrO2：Sm3+的光谱特性及能量传递[J].浙江万里学院学报,2006(02):104-106. |
| [16] | 程振祥,张树君,宋峰,郭红沧,刘雪松,韩建儒,陈焕矗.NaY（WO4）2∶Sm3+晶体的生长与上转换发光[J].人工晶体学报,2001(03):256-259. |
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