NIR Downconversion and Energy Transfer Mechanisms in Tb3+/Yb3+ Codoped Na5Lu9F32 Single Crystals

Jianxu Hu; Yuanpeng Zhang; Haiping Xia; Huanqing Ye; Baojiu Chen; Yongsheng Zhu

doi:10.1021/acs.inorgchem.8b00867

NIR Downconversion and Energy Transfer Mechanisms in Tb³⁺/Yb³⁺ Codoped Na₅Lu₉F₃₂ Single Crystals

Inorg Chem. 2018 Jul 2;57(13):7792-7796. doi: 10.1021/acs.inorgchem.8b00867. Epub 2018 Jun 13.

Authors

Jianxu Hu^{1

2}, Yuanpeng Zhang³, Haiping Xia¹, Huanqing Ye², Baojiu Chen⁴, Yongsheng Zhu⁵

Affiliations

¹ Key Laboratory of Photo-electronic Materials , Ningbo University , Ningbo , Zhejiang 315211 , China.
² School of Physics and Astronomy , Queen Mary University of London , London E1 4NS , United Kingdom.
³ Oak Ridge National Laboratory , 1 Bethel Valley Rd , Oak Ridge , Tennessee 37830 , United States.
⁴ Department of Physics , Dalian Maritime University , Dalian , Liaoning Province 116026 , China.
⁵ College of Physics and Electronic Engineering, College of Chemistry and Charmaceutical Engineering , Nanyang Normal University , Nanyang 473061 , China.

PMID: 29897745
DOI: 10.1021/acs.inorgchem.8b00867

Abstract

Tb³⁺/Yb³⁺ codoped Na₅Lu₉F₃₂ single crystals with near-infrared (NIR) emission are achieved by an improved Bridgman approach. Energy transfer from Tb³⁺ to Yb³⁺ ions is affirmed by the photoluminescence (PL) emission spectra and decay curves characterization. On the basis of the analysis of energy transfer rate dependence on the Yb³⁺ concentration, the interaction between Tb³⁺ and Yb³⁺ ions in Na₅Lu₉F₃₂ single crystals is confirmed through the one-to-one energy transfer process. Results demonstrate that the prepared Na₅Lu₉F₃₂ single crystals might be promising candidates to convert sunlight to improve the performance of the silicon solar cells.