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采用柠檬酸盐溶胶-凝胶法研究不同钐（Sm）浓度对BaAlO/CaAlO/CaAlO/CaAlO:x% Sm（0≤x≤1.9）混合相的结构、形貌和光致发光性能的影响。

Effects of varying Sm concentration on the structure, morphology and photoluminescence properties of the BaAlO /CaAlO/CaAlO/CaAlO:x% Sm (0 ≤ x ≤ 1.9) mixed phases using citrate sol-gel method.

作者信息

Bele A, Mhlongo M R, Koao L F, Motaung T E, Malevu T D, Hlatshwayo T T, Mpelane S, Mlambo M, Motloung S V

机构信息

Department of Physics, Sefako Makgatho Health Science University, P. O. Box 94, Medunsa, 0204, South Africa.

Department of Physics, University of the Free State (Qwaqwa Campus), Private Bag X 13, Phuthaditjhaba, 9866, South Africa.

出版信息

Heliyon. 2022 Dec 25;8(12):e12573. doi: 10.1016/j.heliyon.2022.e12573. eCollection 2022 Dec.

DOI:10.1016/j.heliyon.2022.e12573
PMID:36619461
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9813756/
Abstract

BaAlO/CaAlO/CaAlO/CaAlO:x% Sm (0 ≤ x ≤ 1.9) (hereafter called BCCC:x% Sm) nanophosphors were successfully prepared by citrate sol-gel method. The structure, morphology and photoluminescence properties of the prepared nanophosphors were investigated. X-ray diffraction (XRD) indicated that the nanophosphors composed of the mixed phases of the hexagonal (CaAlO, BaAlO) and cubic (CaAlO, CaAlO) crystal structures. Scanning electron microscopy (SEM) revealed that doping influences the morphology of the prepared nanophosphor. High resolution transmission electron microscopy (HR-TEM) confirmed that the prepared phosphor particles are in the nanoscale range. Photoluminescence (PL) results showed emission peaks originating from the intrinsic defects within the BaAlO, CaAlO and Sm transitions. The optimum luminescence intensity was found at 0.7% Sm. Commission Internationale de l'éclairage (CIE) shows that the Sm doped samples emitted the orange colour.

摘要

采用柠檬酸盐溶胶 - 凝胶法成功制备了BaAlO/CaAlO/CaAlO/CaAlO:x% Sm（0≤x≤1.9）（以下简称BCCC:x% Sm）纳米磷光体。对制备的纳米磷光体的结构、形貌和光致发光性能进行了研究。X射线衍射（XRD）表明，纳米磷光体由六方（CaAlO、BaAlO）和立方（CaAlO、CaAlO）晶体结构的混合相组成。扫描电子显微镜（SEM）显示，掺杂会影响制备的纳米磷光体的形貌。高分辨率透射电子显微镜（HR-TEM）证实，制备的磷光体颗粒处于纳米尺度范围。光致发光（PL）结果表明，发射峰源于BaAlO、CaAlO和Sm跃迁中的固有缺陷。在Sm含量为0.7%时发现了最佳发光强度。国际照明委员会（CIE）表明，Sm掺杂样品发出橙色光。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/0be8b952bc72/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/198e334ffbcd/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/e9a1b91cc1d6/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/0a4ca2cdfc66/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/7825ad343bb5/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/08c9a1d4a64d/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/80b6e30ba698/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/5fdb66227556/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/e76387575e57/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/9ec0181474fd/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/0be8b952bc72/gr10.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/198e334ffbcd/gr1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/e9a1b91cc1d6/gr2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/0a4ca2cdfc66/gr3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/7825ad343bb5/gr4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/08c9a1d4a64d/gr5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/80b6e30ba698/gr6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/5fdb66227556/gr7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/e76387575e57/gr8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/9ec0181474fd/gr9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9687/9813756/0be8b952bc72/gr10.jpg

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