采用化学共沉淀法一次煅烧工艺制备BaAl2Si2O8:Eu2+荧光粉.用X射线衍射仪、荧光分光光度计和扫描电镜等对BaAl2Si2O8:Eu2+荧光粉的相结构、发光性能、形貌进行表征.结果表明,化学共沉淀法合成了单相的BaAl2Si2O8:Eu2+,且粒度小,分布均匀,呈类球形.在320 nm激发下,其发射主峰位于465 nm附近,当Eu2+的掺杂浓度为3.5%,发光强度达到最大值,猝灭浓度有所提高,这主要是由于纳米微粒边界对能量共振传递的阻断和猝灭中心在纳米晶内分布的涨落性引起的.
参考文献
| [1] | Kim S H;Lee H J;Kim K P et al.[J].Chemical Engineering Journal,2006,23(04):669. |
| [2] | Zhang M;Wang J;Ding W;Zhang Q;Su Q .A novel white light-emitting diode (w-LED) fabricated with Sr6BP5O20 : Eu2+ phosphor[J].Applied physics, B. Lasers and optics,2007(4):647-651. |
| [3] | Park, WJ;Jung, MK;Kang, SM;Masaki, T;Yoon, DH .Synthesis and photoluminescence characterization of Ca3Si2O7 : Eu2+ as a potential green-emitting white LED phosphor[J].The journal of physics and chemistry of solids,2008(5/6):1505-1508. |
| [4] | Lee S H;Park J H;Son S M et al.[J].Applied Physics Letters,2006,89:221916. |
| [5] | Lee JH;Kim YJ .Photoluminescent properties of Sr2SiO4 : Eu2+ phosphors prepared by solid-state reaction method[J].Materials Science & Engineering, B. Solid-State Materials for Advanced Technology,2008(1/3):99-102. |
| [6] | 柏朝晖;龚兵勇;田一光 et al.[J].Chinese Journal of Inorg Chem(无机化学学报),2008,24(06):994. |
| [7] | Nazaroy M;Tsukerblat B;Noh D Y .[J].Journal of Luminescence,2008,128:1533. |
| [8] | Jung H;Lee D;Jung K Y et al.[J].Journal of Alloys and Compounds,2005,390:189. |
| [9] | Dexter D L .[J].Journal of Chemical Physics,1953,21(05):836. |
| [10] | 张巍巍,张慰萍,闫阔,廉锐,尹民,夏上达.纳米Y2-xSi2O7：Eux的发光特性及浓度猝灭研究[J].发光学报,1999(02):97-101. |
| [11] | 李丹,吕少哲,陈宝玖,王海宇,唐波,张家骅,侯尚公,黄世华.Y2O3：Eu纳米晶中能量传递相互作用的研究[J].物理学报,2001(05):933-937. |
| [12] | 谢平波,段昌奎,张慰萍,闫阔,尹民,楼立人,夏上达.纳米晶Y2SiO5：Eu的浓度猝灭研究[J].发光学报,1998(01):19-23. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%