摘要
采用高温固相法制备了SrAl2Si2O8∶Eu2+系列荧光粉,研究了灼烧温度以及助熔剂硼酸浓度和激活剂Eu2+离子浓度对发光性能的影响,研究了SrAl2Si2O8的微结构。结果表明,以3.0wt%H3BO3为助熔剂,在1250℃灼烧3h可制备发光性能优良的SrAl2Si2O8∶Eu2+荧光粉,Eu2+离子的最佳掺杂浓度为2.5mol%,Eu2+离子浓度过大时的浓度猝灭是由电偶极-电四极之间的相互作用引起的。SrAl2Si2O8∶Eu2+的激发和发射光谱均为宽带谱,在280～380nm光的激发下,可发射峰值波长位于429nm的蓝色光。
The SrAl2Si2O8∶Eu^2＋ blue phosphor was synthesized by the solid-state reaction method. The effect of the synthesizing temperature and the concentration of activator Eu^2＋ and flux H3BO3 on the spectrum characteristics and structure of the sample was investigated,as well as the microstructure of SrAl2Si2O8. The results show that the sample SrAl2Si2O8∶Eu^2＋ with a concentration of 3.0wt% H3BO3 and 2.5mol% Eu^2＋ which was ignited at 1 250 ℃ for 3 h is of the best luminescence capability. The concentration quenching mechanism is the d-q（dipole-quadrupole） interaction. SrAl2Si2O8∶Eu^2＋ excited by 280～380 nm showed a characteristic wide band with the peak at about 429 nm.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2010年第8期1409-1414,共6页
Chinese Journal of Inorganic Chemistry
基金
吉林省科技发展计划项目(No.20090348)
长春市科技局项目(No.2009141)
全国大学生创新性试验计划项目(No.2008A0605)资助
