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通过新型共沉淀法获得的BaMgWO:Eu双钙钛矿的合成、结构、形态及发光性能

Synthesis, Structure, Morphology, and Luminescent Properties of BaMgWO: Eu Double Perovskite Obtained by a Novel Co-Precipitation Method.

作者信息

Vu Thi Hong Quan, Bondzior Bartosz, Stefańska Dagmara, Miniajluk Natalia, Dereń Przemysław J

机构信息

Institute of Low Temperature and Structure Research, Polish Academy of Science, Okólna 2, 50-422 Wroclaw, Poland.

出版信息

Materials (Basel). 2020 Apr 1;13(7):1614. doi: 10.3390/ma13071614.

DOI:10.3390/ma13071614
PMID:32244670
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7178313/
Abstract

Eu doped BaMgWO (BMW) double-perovskite was successfully synthesized for the first time by the co-precipitation method. The synthesis procedure, crystal structure, as well as morphology of obtained samples are presented. Domination of the D-F magnetic-dipole over forced electric-dipole transitions in the emission spectra indicates that Eu ions are located in the high symmetry site with inversion center. Only one emission line assigned to the D-F transition was observed, confirming that europium substituted for only one host cation site. The photoluminescence excitation (PLE) spectrum is dominated by a strong and broad band related to the O → Eu and O → W charge transfer. The decay of the emission from the D and D levels was investigated. The temperature-dependent emission spectra showed that the T is equal to 350 K. Extinguishing mechanisms of the Eu luminescence in the studied host are discussed.

摘要

通过共沉淀法首次成功合成了铕掺杂的钡镁钨（BMW）双钙钛矿。介绍了所得样品的合成过程、晶体结构以及形貌。发射光谱中D-F磁偶极跃迁相对于强迫电偶极跃迁的主导地位表明铕离子位于具有反演中心的高对称位点。仅观察到一条归因于D-F跃迁的发射线，证实铕仅取代了一个主体阳离子位点。光致发光激发（PLE）光谱由与O→Eu和O→W电荷转移相关的强宽带主导。研究了D和D能级发射的衰减。温度依赖发射光谱表明T等于350K。讨论了所研究主体中铕发光的猝灭机制。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/8a4ff5768aae/materials-13-01614-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/f34d1eace96d/materials-13-01614-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/4a1633e7af67/materials-13-01614-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/b59705434019/materials-13-01614-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/dcc6b77b67ad/materials-13-01614-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/642aeb5e638f/materials-13-01614-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/7abc46347b2f/materials-13-01614-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/e9681c0bcb24/materials-13-01614-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/dfe6c2fc3962/materials-13-01614-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/21dc89b8e1d6/materials-13-01614-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/8a4ff5768aae/materials-13-01614-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/f34d1eace96d/materials-13-01614-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/4a1633e7af67/materials-13-01614-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/b59705434019/materials-13-01614-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/dcc6b77b67ad/materials-13-01614-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/642aeb5e638f/materials-13-01614-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/7abc46347b2f/materials-13-01614-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/e9681c0bcb24/materials-13-01614-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/dfe6c2fc3962/materials-13-01614-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/21dc89b8e1d6/materials-13-01614-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/470d/7178313/8a4ff5768aae/materials-13-01614-g010.jpg

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