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Effect of optical basicity on Er~(3+) up-conversion luminescence in GeO_2-R_2O glasses

机译:光学碱度对GeO_2-R_2O玻璃中Er〜(3+)上转换发光的影响

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摘要

The effect of optical basicity on Er~(3+) up-conversion luminescence in germanate glasses is investigated under 980 nm excitation. The intensity of green and red up-conversion luminescence decreased with the increase in radius of alkali ion or Li_2O content, implying that up-conversion luminescence strongly relates to the optical basicity of glass host. On the other hand, as increasing the optical basicity, the red emission intensity decreased significantly, while the green emission intensity decreased slightly. It has been proposed that the up-conversion luminescence intensity was dominated by the optical basicity, which theoretically estimated from glass composition. The interaction mechanism between up-conversion process and optical basicity was proposed.
机译:在980nm激发下研究了光学碱度对锗玻璃中Er〜(3+)上转换发光的影响。绿色和红色上转换发光的强度随着碱金属离子半径或Li_2O含量的增加而降低,这意味着上转换发光与玻璃主体的光学碱性密切相关。另一方面,随着光学碱度的提高,红色发射强度显着下降,而绿色发射强度略有下降。已经提出,上转换发光强度由光学碱度支配,该光学碱度在理论上由玻璃组成估计。提出了上转换过程与光学碱度之间的相互作用机理。

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