Site symmetry and host sensitization-dependence of Eu3+ real time luminescence in tin dioxide nanoparticles

被引：22

作者：

Cascales, Concepcion ^{[1
]}

Balda, Rolindes ^{[2
,3
]}

Garcia-Revilla, Sara ^{[2
]}

Lezama, Luis ^{[4
,5
]}

Barredo-Zuriarrain, Macarena ^{[2
]}

Fernandez, Joaquin ^{[2
,3
]}

机构：

[1] Inst Ciencia Mat Madrid, C Sor Juana Ines de la Cruz,Cantoblanco, Madrid 28049, Spain

[2] Univ Pais Vasco UPV EHU, Escuela Ingn Bilbao, Dept Fis Aplicada 1, Plaza Ingn Torres Quevedo 1, Bilbao 48013, Spain

[3] Univ Basque Country, CSIC, Ctr Phys Mat, San Sebastian 20018, Spain

[4] Univ Pais Vasco UPV EHU, Fac Ciencias & Tecnol, Dept Quim Inorgan, Apdo 644, Bilbao 48080, Spain

[5] Parque Cient UPV EHU, BCMat, Barrio Sarriena S-N, Leioa 48940, Spain

来源：

OPTICS EXPRESS | 2018年 / 26卷 / 13期

关键词：

LOW-TEMPERATURE PHOTOLUMINESCENCE; SNO2; NANOWIRES; DEFECT; GLASS;

D O I：

10.1364/OE.26.016155

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The present work gives a detailed investigation of the dependence of the real time luminescence of Eu 3+ -doped tin dioxide nanopowder on rare earth (RE) site symmetry and host defects. Ultrafast time-resolved analysis of both RE-doped and undoped nanocrystal powder emissions, together with electronic paramagnetic resonance studies, show that host-excited RE emission is associated with RE-induced oxygen vacancies produced by the non-isoelectronic RE-tin site substitution that are decoupled from those producing the bandgap excited emission of the SnO2 matrix. A lower limit for the host-RE energy transfer rate and a model for the excitation mechanism are given. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：16155 / 16170

页数：16

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