Structural phase transition and photoluminescence properties of YF3 and YF3:Eu3+ under high pressure

被引：35

作者：

Gong, Chen ^{[1
]}

Li, Quanjun ^{[1
]}

Liu, Ran ^{[1
]}

Hou, Yuan ^{[2
]}

Wang, Jinxian ^{[2
]}

Dong, Xiangting ^{[2
]}

Liu, Bo ^{[1
]}

Yang, Xue ^{[1
]}

Yao, Zhen ^{[1
]}

Tan, Xiao ^{[1
]}

Li, Dongmei ^{[1
]}

Liu, Jing ^{[3
]}

Chen, Zhiqiang ^{[4
]}

Zou, Bo ^{[1
]}

Cui, Tian ^{[1
]}

Liu, Bingbing ^{[1
]}

机构：

[1] Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China

[2] Changchun Univ Sci & Technol, Key Lab Appl Chem & Nanotechnol Univ Jilin Prov, Changchun 130022, Peoples R China

[3] Chinese Acad Sci, Beijing Synchrotron Radiat Facil, Inst High Energy Phys, Beijing 100049, Peoples R China

[4] SUNY Stony Brook, GeoSci Dept, Stony Brook, NY 11794 USA

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2013年 / 15卷 / 45期

关键词：

RARE-EARTH TRIFLUORIDES; X-RAY-DIFFRACTION; UP-CONVERSION; SINGLE-CRYSTALS; LUMINESCENCE PROPERTIES; ENERGY-TRANSFER; LAF3; NANOCRYSTALS; NANOPARTICLES; INTENSITIES;

D O I：

10.1039/c3cp53230e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We investigate high-pressure induced phase transitions of YF3 and Eu-doped YF3 (YF3:Eu3+) by using the angular dispersive synchrotron X-ray diffraction technique at room temperature. It is found that the starting orthorhombic phase transforms into a new high-pressure phase which is identified as hexagonal structure in both YF3 and YF3:Eu3+. The high-pressure structure of YF3 and YF3:Eu3+ returned to the orthorhombic phase after release of pressure. The photoluminescence properties of YF3:Eu3+ have also been studied under high pressure up to 25 GPa. The Eu3+ ion luminescence lines of D-5(0) -> F-7(1,2,3,4) transition originating from the orthorhombic phase transform into another group of luminescence lines of hexagonal phase under high pressure, which reveals the pressure-induced structural transition of YF3:Eu3+. The relative luminescence intensity ratio of D-5(0) -> F-7(2) to D-5(0) -> F-7(1) transitions of the Eu3+ ions is found to increase with increasing pressure before phase transition and decrease after transition finished, indicating reducing and enhancing of the symmetry around the Eu3+ ions, respectively.

引用

页码：19925 / 19931

页数：7

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