Pr掺杂Mg2SnO4纳米颗粒的制备及其光致发光性能

doi:10.15541/jim20150173

无机材料学报 ›› 2015, Vol. 30 ›› Issue (11): 1172-1176.DOI: 10.15541/jim20150173

Pr掺杂Mg₂SnO₄纳米颗粒的制备及其光致发光性能

郭鹏, 彭林志, 张为海, 刘雷, 熊娟

(湖北大学有机化工新材料湖北省协同创新中心, 物理与电子科学学院, 武汉 430062)

收稿日期:2015-04-09 修回日期:2015-05-09 出版日期:2015-11-20 网络出版日期:2015-10-20
作者简介:郭鹏(1989–), 男, 硕士研究生. E-mail: guopeng714@163.com
基金资助:
国家自然科学基金(61106070);湖北省自然科学基金重点项目(2013CFA043)

Preparation and Photoluminescence Properties of Pr-doped Mg₂SnO₄Nanoparticles

GUO Peng, PENG Lin-Zhi, ZHANG Wei-Hai, LIU Lei, XIONG Juan

(Faculty of Physics & Electronic Science, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei University, Wuhan 430062, China)

Received:2015-04-09 Revised:2015-05-09 Published:2015-11-20 Online:2015-10-20
About author:GUO Peng. E-mail: guopeng714@163.com
Supported by:
National Natural Science Foundation of China (61106070);Key Project of Natural Science Foundation of Hubei Province, China (2013CFA043)

摘要/Abstract

摘要：

采用水热合成和低温煅烧两步法工艺制备了不同浓度(0~1.5mol%)镨掺杂锡酸镁, 通过X射线衍射(XRD)、扫描电子显微镜(SEM)及荧光光谱仪对合成的样品进行表征, 研究了Pr掺杂量对锡酸镁微观形貌的影响, 并讨论了其光致发光性能。结果表明, 所制备的Mg₂SnO₄: Pr³⁺为立方反尖晶石结构的立方纳米颗粒; 与未掺杂的Mg₂SnO₄相比, Pr掺杂浓度的增加使颗粒尺寸变大, 并使颗粒边角锐化。不同浓度Mg₂SnO₄: Pr³⁺的发射光谱表明Mg₂SnO₄: Pr³⁺样品中存在530、570 nm两处发射峰, 前者与Mg₂SnO₄基质中的氧空位有关, 后者由Pr元素³P₀-³H₅能级的跃迁造成。随着Pr掺杂浓度增加, 锡酸镁颗粒尺寸变大、发光中心增多, 使得Pr掺杂锡酸镁纳米颗粒在570 nm处的发光强度增强。

关键词: 锡酸镁, 纳米颗粒, Pr掺杂, 光致发光

Abstract:

Pr doped Mg₂SnO₄in the scope of 0~1.5nm% was synthesized by hydrothermal method and corresponding calcination at low temperature. X-ray diffraction (XRD), Scanning electron microscope (SEM) and luminescence/ fluorescence spectrophotometer were applied to characterize Pr doped Mg₂SnO₄. The relationship between Pr doping contents and the morphologies of Mg₂SnO₄ particles was studied. The results show that the Mg₂SnO₄: Pr³⁺are confirmed to be the cubic inverse spinel structure and exhibit as cubic particles. An augment of the grain sizes and obvious sharpen edges of the cubic nanoparticles are observed with increasing Pr doping amounts. The emission spectra of Mg₂SnO₄nanoparticles with various Pr doping contents indicate two bands centered at 530 nm and 570 nm, respectively. The former emission band is related with the oxygen vacancies in Mg₂SnO₄ and the latter emission band is attributed to the ³P₀-³H₅energy transitions of Pr³⁺. The increase of luminescence center’s number and Pr-doped Mg₂SnO₄ particles size result in an obvious enhancement of emission intensity centered at 570 nm with increasing Pr doping contents.

Key words: Mg2SnO4, nanoparticles, Pr doping, photoluminescence

中图分类号:

TQ139

郭鹏, 彭林志, 张为海, 刘雷, 熊娟. Pr掺杂Mg₂SnO₄纳米颗粒的制备及其光致发光性能[J]. 无机材料学报, 2015, 30(11): 1172-1176.

GUO Peng, PENG Lin-Zhi, ZHANG Wei-Hai, LIU Lei, XIONG Juan. Preparation and Photoluminescence Properties of Pr-doped Mg₂SnO₄Nanoparticles[J]. Journal of Inorganic Materials, 2015, 30(11): 1172-1176.

图/表 5

图1 不同浓度Pr掺杂Mg2SnO4样品的XRD图谱

Fig. 1 XRD patterns of Mg2SnO4 doped with different amounts of Pr (a) Full pattern; (b) Partial enlarged pattern

图2 不同浓度Pr掺杂Mg2SnO4样品的SEM照片

Fig. 2 SEM images of Mg2SnO4 doped with different amount of Pr (a) 0; (b) 0.5mol%; (c) 1.0mol%; (d) 1.5mol%

图3 不同浓度Pr掺杂Mg2SnO4样品的EDS图谱

Fig. 3 EDS spectra of Mg2SnO4 doped with different amount of Pr (a) 0; (b) 0.5mol%; (c) 1.0mol%; (d) 1.5mol%

图4 不同浓度Pr掺杂Mg2SnO4样品的(a)激发光谱和(b)发射光谱

Fig. 4 (a) Excitation and (b) emission spectra of Mg2SnO4 doped with different amount of Pr

图5 Pr3+离子能级结构图

Fig. 5 Schematic energy level diagram for Pr3+ ion

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Pr掺杂Mg₂SnO₄纳米颗粒的制备及其光致发光性能

Preparation and Photoluminescence Properties of Pr-doped Mg₂SnO₄Nanoparticles

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