| 固溶体结构对Ca2-xSrxZn4Ti15O36∶Pr3+发光性质的影响 | |
| Effects of Solid Solution Structures on Luminescence of Ca2-xSrxZn4Ti15O36∶Pr3+ | |
| 摘要: | |
| 关键词: Ca2-xSrxZn4Ti15O36固溶体 Pr3+离子 红色发光 | |
| 基金项目: | |
| Abstract: Ca2-xSrxZn4Ti15O36∶Pr red long decay phosphor was synthesized by high temperature solid state reaction. Photoluminescence property and crystalline and unit cell parameters of the orthorhombic were investigated by fluorescence spectrophotometer and by powder X-ray diffraction, respectively. The emission intensity at 618 nm changes sharply when the concentration of Sr2+ (x) is less than 0.1 and the emission intensity reaches the maximum when x is equal to 0.007. There is an obviously broad excitation band at 270 nm when x is equal to 0.003 and it disappears gradually when x is over 0.01. The unit cell a parameter of Ca2-xSrxZn4Ti15O36∶Pr decreases while c parameter increases with the increases of the concentration of the doped Sr2+. When x is over 0.1 the value of the unit cell parameters a and c become stable. TL peaks of Ca2Zn4Ti15O36∶Pr, Ca1.993Sr0.007Zn4Ti15O36∶0.002Pr3+, 0.002Na+, are located at 62 ℃, 88 ℃, respectively, which indicates that there are deeper traps in Ca1.993Sr0.007Zn4Ti15O36∶0.002Pr3+, 0.002Na+. | |
| Keywords: Ca2-xSrxZn4Ti15O36 solid solution Pr3+ red luminescence | |
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| 廉世勋,李秀英,尹笃林,李承志,朱爱玲.固溶体结构对Ca2-xSrxZn4Ti15O36∶Pr3+发光性质的影响[J].无机化学学报,2006,22(2):336-340. | |
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