化工新型材料

化工新型材料 ›› 2018, Vol. 46 ›› Issue (10) : 87-91.

新材料与新技术

Mn²⁺掺杂对SrF₂∶Yb,Er纳米晶结构及发光性能的影响

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Influence of Mn²⁺ on the structure and luminescence of SrF₂∶Yb,Er nanocrystal

Zhong Cheng¹,Luo Ran²,Yuan Hongyan¹,Zhang Ting¹,Guo Shanjun¹,Jiang Yun¹,Gao Daojiang²

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摘要

通过温和水热法制备了氟化锶(SrF₂)∶Yb,Er,Mn纳米晶。采用X射线衍射、扫描电子显微镜、荧光分析对制备的纳米晶微结构、形貌、发光性能进行表征。结果表明,纳米晶微结构为面心立方晶相,形貌为类球形,随着Mn²⁺离子的掺入,样品发生晶格畸变,粒径减小,发光强度减弱,Er³⁺离子的红/绿发光强度比增大,发光颜色从绿光区向红光区移动。分析了Mn²⁺的掺入对样品微结构、形貌、发光性能的影响。通过样品发光强度与激发功率的关系,分析了SrF₂∶Yb,Er,Mn纳米晶的上转换发光机制。

Abstract

SrF₂∶Yb,Er,Mn nanocrystals were prepared by a mild hydrothermal method.The microstructure,morphology and luminescence properties of as-prepared sample were characterized by XRD,SEM and FA.The results showed that the microstructure of sample was face-centered cubic crystal phase,and had morphology of spherical-like.With the addition of Mn²⁺ ions,the lattice of sample was distorted,the particle size decreased,the luminescence intensity weakened and the red/green luminescence ratio increased.The luminescence shifted from the green region to the red region.The effects of Mn²⁺ on the microstructure,morphology and luminescence properties of the samples were analyzed.The upconversion luminescence mechanism of sample was analyzed by the relationship between the luminescence intensity and the excitation power.

关键词

氟化锶 / Mn²⁺ / 红光增强 / 微结构变化 / 上转换机制

Key words

SrF₂ / Mn²⁺ / red light enhancement / microstructure change / upconversion mechanism

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Mn²⁺掺杂对SrF₂∶Yb,Er纳米晶结构及发光性能的影响[J]. 化工新型材料, 2018, 46(10): 87-91 DOI:

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