以硝酸铝和尿素为原料,聚乙二醇2000为表面活性剂,氟化铝为添加剂,水热-热解法得到规则片状氧化铝粉体,以该氧化铝为原料合成YAG∶Ce3+黄色荧光粉。通过 XRD、SEM、FM 等对产物进行表征。结果表明,120℃水热反应24h,加入适量氟化铝高温煅烧可以获得粒径3~4μm,厚度0.2~0.3μm 的规则六边形片状氧化铝。氟化铝添加剂对氧化铝的形貌粒径控制起到重要作用,自制片状α-A12 O3粉体适合作为白光LED用铝酸盐荧光粉基质。
Light emitting diode(LED)has been widely applied in the field of lighting and displaying.Flaky alu-mina powders was synthesized using aluminum nitrate and urea as the raw materials,PEG 2000 as the surfac-tant and aluminum fluoride as the additive.The YAG∶Ce3+ phosphor was synthesized with flaky alumina by the method of hydrothermal-pyrolysis.The structure and morphologies of the synthesized samples were investi-gated by XRD,SEM and FM techniques.The results showed that after 24 hours’thermal reaction at 120℃,by adding appropriate amount of aluminum fluoride,regular hexagon tabular alumina with particle size of 3-4μm and thickness of 0.2-0.3μm can be obtained through high-temperature calcination.The additive aluminum fluor-ide plays an important role in controlling the particle size of the alumina.This study explores the application of the flaky alumina powders,which was synthesized by the method of hydrothermal-pyrolysis and served as the base LED phosphor powder,in the phosphor powder YAG∶Ce3+ and obtains optimized results.
参考文献
| [1] | 宋国华,缪建文,王淼,纪宪明.用于白光LED的硼铝硅酸盐YAG玻璃陶瓷制备[J].无机化学学报,2010(11):1975-1980. |
| [2] | 胡长奇,张方辉.高显色白光LED的制备与研究分析[J].功能材料,2013(03):432-434,441. |
| [3] | 杨志平,宋延春,韩月,赵青,潘飞,周东站.新型红色荧光粉Sr2ZnMoO6：Sm3+的制备与发光性能[J].发光学报,2012(06):586-590. |
| [4] | 宁青菊,郭芳芳,乔畅君.白光LED用Ca2SiO3Cl2∶Tb3+单一基质荧光粉的制备及性能研究[J].功能材料,2013(14):1995-1997,2002. |
| [5] | 万贤龙,饶海波,谢立坤,王玮,周琳淞.基于改进的Pechini法制备白光LED用YAG荧光粉[J].发光学报,2013(06):698-701. |
| [6] | 鄢蜜昉,薛丽红,严有为,姚山山.白光LED用荧光粉α-Sr2P2O7∶Eu^3＋的制备及其发光性能[J].功能材料,2011(11):1998-2000,2004. |
| [7] | 董岩,蒋建清,刘刚,梁超,孙明涛.作为荧光粉原料的氧化铝的制备及其形貌控制[J].硅酸盐学报,2004(04):393-397. |
| [8] | 胡学芳,马林,闫世润,万国江,胡建国,徐燕.原料Al2O3与CMAT绿色荧光粉的晶体形貌及性能的关系[J].稀土,2007(05):68-71. |
| [9] | Soofeon B;Young G;Kilyoo Y et al.Spherical BaMgAl10 O7:Eu2+ phosphor prepared by acrosol pyrolysis technique for PDP applications[J].Journal of the Electrochem Society,2001,148(09):128. |
| [10] | Kim C H;Kwon I E;Park C H et al.Phosphor for plas-ma display panels[J].Journal of Alloys and Com-pounds,2000,311:31-39. |
| [11] | 周永慧,林君,于敏,张洪杰.喷雾热解法制备发光材料研究进展[J].发光学报,2002(05):503-508. |
| [12] | 董岩,蒋建清,梁超,吴直森,于金,张超.小粒径氧化铝粉的制备及其在荧光粉合成中的应用[J].中国陶瓷,2005(04):12-15. |
| [13] | 张倩影,朱丽慧,刘伟,黄清伟.添加剂在熔盐法合成片状α-Al2O3中的作用[J].材料研究学报,2008(02):205-208. |
| [14] | 沈仰云;沈毅 .超高温还原气氛下几种掺杂物对氧化铝晶体形貌的影响[J].硅酸盐通报,1997,2:32-34. |
| [15] | 沈毅;张庆军;桑晓明 .超高温烧结条件下氧化铝板状晶体的形貌[J].河北理工学院学报,2002,22(01):36-38. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%