Yellow Photoluminescence Properties of Copper Ion Doped Phase–Separated Glasses in Alkali Borosilicate System
Yellow Photoluminescence Properties of Copper Ion Doped Phase–Separated Glasses in Alkali Borosilicate System
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DOI：
10.1149/2.001205jes
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发表时间：
2012
影响因子：
3.9
通讯作者：
A. Yasumori;F. Tada;S. Yanagida;T. Kishi
中科院分区：
文献类型：
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作者：
A. Yasumori;F. Tada;S. Yanagida;T. Kishi
在R2 OB 2 O3-SiO2（R= Na或K）系统中制备了Cu和Sn离子共掺杂的分相玻璃，在近紫外光照射下，Cu+团簇产生强而宽的黄光发射。在分相玻璃中形成了Cu+团簇，在近紫外光照射下得到了宽的黄光发射。Cu、Sn离子在富R2 OB 2 O3相中富集. Cu+离子变得相互接近，从而形成它们的簇。这一结果与Al 2 O3的加入抑制了相分离而使发光强度急剧下降的事实相一致。Na 2 OB 2 O3-SiO2系统玻璃的发光强度高于K2 OB 2 O3-SiO2系统玻璃的发光强度，这是由于前者玻璃中Na+离子的离子半径小，在富Na 2 OB 2 O3相中具有较大的自由空间。
Cu and Sn ion co-doped phase-separated glasses in R 2 OB 2 O 3-SiO 2 (R= Na or K) systems were prepared to achieve strong and broad yellow emission under near-UV light irradiation caused by the Cu+ clusters. The Cu+ clusters were formed in the phase-separated glasses, and the resultant broad yellow emission was obtained under near-UV light irradiation. The Cu and Sn ions were concentrated in R 2 OB 2 O 3-rich phase. The Cu+ ions became mutually close, thereby forming their clusters. This result agrees with the fact that the emission intensity decreased steeply with the suppression of phase separation because of Al 2 O 3 addition. The emission intensity of the glasses in Na 2 OB 2 O 3-SiO 2 system was higher than that of the glasses in the K 2 OB 2 O 3-SiO 2 system because the former glass had large free spaces in the Na 2 OB 2 O 3-rich phase attributable to the small ionic radius of Na+ ions.