温州大学化学与材料工程学院

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祝贺潘跃晓老师指导的研究生高梦与本科生金奕恬在RSC Adv.上发表综述论文

发布时间:2021-01-08    来源:化学与材料工程学院    作者:    点击次    [点击关闭]

标题(中文):Mn4+和稀土离子共掺杂复合氧化物发光材料的结构依赖光学性能和能量转移研究进展

标题(英文): A review on structural dependent optical properties and energy transfer of Mn4+ and multiple ions codoped complex oxide phosphors

刊物名称及期号、页码: RSC Adv., 2021, 11, 760-779

作者姓名(中文):高梦,潘跃晓*,金奕恬,林君*

作者姓名(英文): Meng Gao,a Yuexiao Pan,a* Yitian Jin,a Dong Li,a Jun Linb*

摘要(英文):The tetravalent manganese Mn4+ ions with a 3d3 electron configuration as luminescence centers in solid state inorganic compounds have been widely investigated because they emit bright light in the region from red to far-red when they are excited by a light with wavelength in the region from UV to blue light. In this article, we present an overview of the recent developments of Mn4+ and multiple ions such as Bi3+ and rare earth ions Dy3+, Nd3+, Yb3+, Er3+, Ho3+, and Tm3+ codoped complex oxide phosphors. Most of the specified host lattices of these complex oxide phosphors possess multiple metallic cations, which provides possible substitutions with different codopants and forms various luminescence centers with diverse spectra. The luminescence of Mn4+ and multiple ions codoped materials spans from almost the whole visible light to near infrared (NIR) regions. The crystal structures of the complex oxide phosphors, the spectroscopic properties of Mn4+, and the energy transfers between Mn4+ and multiple ions have been introduced and summarized in details with regard to the practical applications. This review will provide insight into the optical properties of Mn4+ and the energy transfer process in multiple ions codoped luminescence materials which are helpful to developing novel excellent materials towards the lighting industry.

研究现状(中文):

硅太阳能电池因具有低成本、节能环保等优点而成为目前的研究热点。太阳光谱能量主要集中在波长900nm以上,硅吸收的最大光谱响应范围为900-1100nm,实现两者之间的转换是提高硅太阳能电池能量转换效率的重要途径。将Nd3+Er3+Yb3+Mn4+离子共掺到发光材料中,实现了紫外-可见光区到近红外光区的相互转换,通过涂覆实现硅太阳能电池能量转换效率的提高。白光LEDWLED)由于其高能效、长寿命和低污染而受到广泛关注。目前,商业化的WLED是用蓝光发射的InGaN芯片和黄色荧光粉Y3Al5O12:Ce3+YAG:Ce)制成的,由于白光光谱中缺少红光成分,导致显色指数低(<80),色温高(CCT> 4000 K)。对于这个问题,需要具有光谱匹配的发红光的荧光粉来改善其发光性能。Mn4+掺杂的红色发光氧化物荧光粉具有优异的光学特性,其在蓝光区域具有宽吸收且红光区域出现窄发射带,与WLED光谱匹配。

室内植物栽培可以避免气候和自然损害带来的不利影响,同时可以通过调控光照、温度、湿度等条件来提高产量,因此具有广阔的发展前景。其中光照条件一般借用LED照明来实现,420-500 nm的蓝紫色光有利于提高叶绿素A和叶绿素B的含量,640-750 nm的远红光有利于提高植物色素PR和植物色素PFR的含量。在Bi3+Mn4+共掺杂的氧化物荧光粉中,Bi3+的呈现蓝色发射,Mn4+呈现红色发射,表明其有望应用于植物生长用LED。由于Mn4+的发光对温度敏感性高,稀土离子(Eu3+Tb3+Dy3+)的发光对温度敏感性低,且Mn4+和稀土离子共掺的荧光粉具有出色的温度分辨率和相对灵敏度,分别高达0.114-0.441 K-12.32-4.81K-1,因此该荧光粉可应用于温度传感器。

创新点(中文):

本文主要综述了Mn4+和稀土离子(Dy3+Nd3+Yb3+Er3+Ho3+Tm3+Tb+)共掺杂的复合氧化物荧光粉研究进展。从基质结构、光谱特征与应用角度高效太阳能电池、白光LED、室内植物栽培、温度传感器等),详细介绍了复合氧化物荧光粉的晶体结构、光学性能以及Mn4+与共掺离子之间的能量传递机理,为开发新型应用发光材料提供设计思路。

图:Mn4+和稀土离子(或Bi3+)共掺杂复合氧化物发光材料。

原文链接: https://doi.org/ 10.1039/D0RA08550B