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Unraveling the Photoluminescence Properties of the Sr10V6O25 Structure through Experimental and Theoretical Analyses
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-06-12 , DOI: 10.1021/acs.jpcc.0c02768 Mayara Mondego Teixeira 1 , Amanda Fernandes Gouveia 2 , Alexsandro Gama de Sousa 3 , Luís Fernando da Silva 4 , Regiane Cristina de Oliveira 5 , Miguel A. San-Miguel 2 , Máximo Siu Li 6 , Elson Longo 1
The Journal of Physical Chemistry C ( IF 3.3 ) Pub Date : 2020-06-12 , DOI: 10.1021/acs.jpcc.0c02768 Mayara Mondego Teixeira 1 , Amanda Fernandes Gouveia 2 , Alexsandro Gama de Sousa 3 , Luís Fernando da Silva 4 , Regiane Cristina de Oliveira 5 , Miguel A. San-Miguel 2 , Máximo Siu Li 6 , Elson Longo 1
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White light photoluminescent materials can overcome many problems due to an intrinsic color balance, in addition to reducing the cost for application in emitting components and electronic devices. In this sense, to observe this phenomenon of photoluminescence, variations in the synthesis time at low temperatures were carried out, which also influenced the degree of structural order/disorder of strontium vanadate (Sr10V6O25, SVO). The microwave-assisted hydrothermal route allowed us to evaluate the structural and morphological evolution of the SVO compound. Furthermore, this paper discusses how van der Waals forces influence the morphological evolution of a semiconductor as a function of orientation, induction, and dispersion interactions. The experimental study combined with theoretical approaches provided information about the structure and electronic properties of SVO. From the experimental data and theoretical analysis, we propose, for the first time, that the unit cell of the SVO structure is composed of three distorted [SrOx] (x = 6, 7, and 9) and two distorted [VO4] clusters. Photoluminescence measurements revealed an efficient broadband emission, and the conversion of ultraviolet light excitation into visible light was observed. The emission chromaticity showed that the structural disorders of the [SrOx] and [VO4] clusters present the possibility of change in the Commission Internationale de l’Éclairage emission color.
中文翻译：
通过实验和理论分析揭示Sr 10 V 6 O 25结构的光致发光性质
白光光致发光材料除了减少了用于发光组件和电子设备的成本外，还可以克服由于固有的色彩平衡而引起的许多问题。从这个意义上讲，为了观察这种光致发光现象，在低温下进行了合成时间的变化，这也影响了钒酸锶（Sr 10 V 6 O 25，SVO）。微波辅助的热液路线使我们能够评估SVO化合物的结构和形态演变。此外，本文讨论了范德华力如何根据取向，感应和色散相互作用来影响半导体的形态演化。实验研究与理论方法相结合，提供了有关SVO的结构和电子性能的信息。根据实验数据和理论分析，我们首次提出SVO结构的晶胞由三个扭曲的[SrO x ]（x = 6、7和9）和两个扭曲的[VO 4]组成。]集群。光致发光测量显示有效的宽带发射，并且观察到紫外光激发转化为可见光。发射色度表明[SrO x ]和[VO 4 ]团簇的结构紊乱可能改变国际照明委员会发射色。
更新日期：2020-07-09
中文翻译：
通过实验和理论分析揭示Sr 10 V 6 O 25结构的光致发光性质
白光光致发光材料除了减少了用于发光组件和电子设备的成本外，还可以克服由于固有的色彩平衡而引起的许多问题。从这个意义上讲，为了观察这种光致发光现象，在低温下进行了合成时间的变化，这也影响了钒酸锶（Sr 10 V 6 O 25，SVO）。微波辅助的热液路线使我们能够评估SVO化合物的结构和形态演变。此外，本文讨论了范德华力如何根据取向，感应和色散相互作用来影响半导体的形态演化。实验研究与理论方法相结合，提供了有关SVO的结构和电子性能的信息。根据实验数据和理论分析，我们首次提出SVO结构的晶胞由三个扭曲的[SrO x ]（x = 6、7和9）和两个扭曲的[VO 4]组成。]集群。光致发光测量显示有效的宽带发射，并且观察到紫外光激发转化为可见光。发射色度表明[SrO x ]和[VO 4 ]团簇的结构紊乱可能改变国际照明委员会发射色。
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