Microwave-assisted hydrothermal synthesis and temperature sensing application of Er³⁺/Yb³⁺ doped NaY(WO₄)₂ microstructures

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• 作者：Hui Zheng^a ; ^b ; Baojiu Chen^a ; ^{chenmbj@sohu.com" class="auth_mail} ; Hongquan Yu^b ; ^{yuhq7808@djtu.edu.cn" class="auth_mail} ; Jinsu Zhang^a ; Jiashi Sun^a ; Xiangping Li^a ; Min Sun^a ; Bining Tian^a ; Shaobo Fu^a ; Hua Zhong^a ; Bin Dong^c ; Ruinian Hua^c ; Haiping Xia^d
• 关键词：Microwave hydrothermal synthesis ; Temperature sensing ; Tungstate ; Upconversion
• 刊名：Journal of Colloid and Interface Science
• 出版年：15 April, 2014
• 年：2014
• 卷：420
• 期：Complete
• 页码：27-34
• 全文大小：1458 K

文摘

Laurustinus shaped NaY(WO₄)₂ micro-particles assembled by nanosheets were synthesized via a microwave-assisted hydrothermal (MH) route. The growing mechanisms for the obtained resultants with various morphologies were proposed based on the observation of scanning electron microscopic (SEM) images. It was found that Na₃Cit added into the reaction solution greatly influenced the formation and size dimension of the nano-sheets, furthermore determined assembling of the laurustinus shaped micro-particles. The temperature sensing performance of NaY(WO₄)₂:Er³⁺/Yb³⁺ was evaluated. Thermal effect induced by the 980 nm laser irradiation in laurustinus-shaped NaY(WO₄)₂:Er³⁺/Yb³⁺ phosphor was studied. It was found that the green upconversion luminescence intensity increased in the first stage of laser irradiation, and then decreased after reaching a maximum. Based on the thermal sensing technology the laurustinus NaY(WO₄)₂:Er³⁺/Yb³⁺ microparticles were used as thermal probe to discover thermal effect of upconversion luminescence in laurustinus NaY(WO₄)₂:Tm³⁺/Yb³⁺ micro-particles.