Charge transfer-induced fast blue emission in SrZnO2:Ce

IF 3.6 2区物理与天体物理 Q2 PHYSICS, APPLIED

Applied Physics Letters Pub Date : 2021-09-20 DOI:10.1063/5.0064383

Manju, Megha Jain, Pargam Vashishtha, Govind Gupta, M. Gupta, P. Rajput, A. Vij, A. Thakur

引用次数: 2

Abstract

This study reports host-controlled luminescence from 4f0 and 4f 1 Ce levels in SrZnO2, probed through x-ray absorption near edge and photoluminescence spectroscopies. O K-edge perceived the presence of Ce 4f states at the bottom of conduction band and 5d states merging with conduction band. Due to such an arrangement, a fast radiative emission (11.15 ns, average) is observed through charge transfer excitation from host to empty 4f0 Ce levels. Ce content is found to vary the site occupancy, which is then modifying the population of 4f0 and 4f 1 energy states by altering Ce–O bond covalency. This study proposes the Ce-doped SrZnO2 system as a potential system for scintillators and lighting materials.

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SrZnO2:Ce中电荷转移诱导的快速蓝色发射

本研究报道了SrZnO2中4f0和4f1ce水平的宿主控制发光，通过x射线吸收近边和光致发光光谱进行了探测。O k边缘感知到ce4f态存在于导带底部，5d态与导带合并。由于这种安排，通过电荷转移激发从宿主到空4f0 Ce能级观察到快速辐射发射(11.15 ns，平均)。发现Ce的含量改变了位点占用，从而通过改变Ce - o键的共价改变了440和4f1能态的居群。本研究提出了ce掺杂SrZnO2体系作为闪烁体和照明材料的潜在体系。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics Letters 物理-物理：应用

CiteScore

6.40

自引率

10.00%

发文量

1821

审稿时长

1.6 months

期刊介绍： Applied Physics Letters (APL) features concise, up-to-date reports on significant new findings in applied physics. Emphasizing rapid dissemination of key data and new physical insights, APL offers prompt publication of new experimental and theoretical papers reporting applications of physics phenomena to all branches of science, engineering, and modern technology. In addition to regular articles, the journal also publishes invited Fast Track, Perspectives, and in-depth Editorials which report on cutting-edge areas in applied physics. APL Perspectives are forward-looking invited letters which highlight recent developments or discoveries. Emphasis is placed on very recent developments, potentially disruptive technologies, open questions and possible solutions. They also include a mini-roadmap detailing where the community should direct efforts in order for the phenomena to be viable for application and the challenges associated with meeting that performance threshold. Perspectives are characterized by personal viewpoints and opinions of recognized experts in the field. Fast Track articles are invited original research articles that report results that are particularly novel and important or provide a significant advancement in an emerging field. Because of the urgency and scientific importance of the work, the peer review process is accelerated. If, during the review process, it becomes apparent that the paper does not meet the Fast Track criterion, it is returned to a normal track.