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GREEN UP-CONVERSION EMISSION FROM ER3+ ION DOPED INTO SOL-GEL SILICA GLASSES UNDER RED-LIGHT (647.1 NM) EXCITATION
被引：53
作者：
XU, W
DAI, S
TOTH, LM
DELCUL, GD
PETERSON, JR
机构：
[1] UNIV TENNESSEE, DEPT CHEM, KNOXVILLE, TN 37996 USA
[2] OAK RIDGE NATL LAB, DIV CHEM TECHNOL, OAK RIDGE, TN 37831 USA
[3] OAK RIDGE NATL LAB, DIV CHEM & ANALYT SCI, TRANSURANIUM RES LAB, OAK RIDGE, TN 37831 USA
关键词：
D O I：
10.1021/j100013a013
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ;
081704 ;
摘要：
Green upconversion emission from Er3+(4f(11)) ion doped into a sol-gel silica glass under red light (647.1 nm) excitation has been observed and characterized. Green and weak blue emission bands, centered at 550 and 410 nm, for the S-4(3/2) --> I-4(15/2) and H-2(9/2) --> I-4(15/2) Er3+ transitions, respectively, have been observed. These upconversion processes involve a sequential two-photon absorption. A fluorescence efficiency of 1.7 x 10(-6) has been estimated for the S-4(3/2) --> I-4(15/2) (550 nm) emission in Er3+ ion at room temperature for a sample doped with 1.2 mol % ET(NO3)(3). An upconversion mechanism is proposed.
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页码：4447 / 4450
页数：4
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