Efficient near-infrared downconversion and energy transfer mechanism in Pr3+/Yb3+ co-doped Na5Y9F32 single crystals

Jianxu Hu; Yun Zhao; Baojiu Chen; Haiping Xia; Yuanpeng Zhang; Huanqing Ye

doi:10.1016/j.jlumin.2018.10.002

Efficient near-infrared downconversion and energy transfer mechanism in Pr³⁺/Yb³⁺ co-doped Na₅Y₉F₃₂ single crystals

Jianxu Hu, Yun Zhao, Baojiu Chen, Haiping Xia, Yuanpeng Zhang, Huanqing Ye

Powder Diffraction

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

Pr³⁺/Yb³⁺ co-doped Na₅Y₉F₃₂ single crystals have been prepared by a modified Bridgman method to enhance the performance of c-Si solar cells. The prepared samples show intense NIR emission under visible excitation, indicating efficient energy transfer exists in the Pr³⁺-Yb³⁺ couple. The energy transfer mechanism between Pr³⁺ and Yb³⁺ ions has been identified via the electric dipole-dipole interaction. The first-order downconversion mechanism via cross-relaxation is responsible for converting one visible photon to two NIR photons with an optimal quantum efficiency of 180%. The synthesized single crystals with excellent properties can be used as promising downconverters to overcome the spectral mismatch in c-Si solar cells.

Original language	English
Pages (from-to)	500-507
Number of pages	8
Journal	Journal of Luminescence
Volume	205
DOIs	https://doi.org/10.1016/j.jlumin.2018.10.002
State	Published - Jan 2019

Funding

This work was supported by the National Natural Science Foundation of China [Grant Nos. 51772159 , 51472125 , 11504188 , and U1504626 ]; the Natural Science Foundation of Zhejiang Province [Grant No. LZ17E020001 ]; and K.C. Wong Magna Fund in Ningbo University . This work was supported by the National Natural Science Foundation of China [Grant Nos. 51772159, 51472125, 11504188, and U1504626]; the Natural Science Foundation of Zhejiang Province [Grant No. LZ17E020001]; and K.C. Wong Magna Fund in Ningbo University.

Funders	Funder number
National Natural Science Foundation of China	11504188, 51772159, 51472125, U1504626
Ningbo University
Natural Science Foundation of Zhejiang Province	LZ17E020001

Keywords

Downconversion
Energy transfer
Optical properties
Single crystal

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.jlumin.2018.10.002

Cite this

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title = "Efficient near-infrared downconversion and energy transfer mechanism in Pr3+/Yb3+ co-doped Na5Y9F32 single crystals",

abstract = "Pr3+/Yb3+ co-doped Na5Y9F32 single crystals have been prepared by a modified Bridgman method to enhance the performance of c-Si solar cells. The prepared samples show intense NIR emission under visible excitation, indicating efficient energy transfer exists in the Pr3+-Yb3+ couple. The energy transfer mechanism between Pr3+ and Yb3+ ions has been identified via the electric dipole-dipole interaction. The first-order downconversion mechanism via cross-relaxation is responsible for converting one visible photon to two NIR photons with an optimal quantum efficiency of 180%. The synthesized single crystals with excellent properties can be used as promising downconverters to overcome the spectral mismatch in c-Si solar cells.",

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author = "Jianxu Hu and Yun Zhao and Baojiu Chen and Haiping Xia and Yuanpeng Zhang and Huanqing Ye",

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T1 - Efficient near-infrared downconversion and energy transfer mechanism in Pr3+/Yb3+ co-doped Na5Y9F32 single crystals

AU - Hu, Jianxu

AU - Zhao, Yun

AU - Chen, Baojiu

AU - Xia, Haiping

AU - Zhang, Yuanpeng

AU - Ye, Huanqing

PY - 2019/1

Y1 - 2019/1

N2 - Pr3+/Yb3+ co-doped Na5Y9F32 single crystals have been prepared by a modified Bridgman method to enhance the performance of c-Si solar cells. The prepared samples show intense NIR emission under visible excitation, indicating efficient energy transfer exists in the Pr3+-Yb3+ couple. The energy transfer mechanism between Pr3+ and Yb3+ ions has been identified via the electric dipole-dipole interaction. The first-order downconversion mechanism via cross-relaxation is responsible for converting one visible photon to two NIR photons with an optimal quantum efficiency of 180%. The synthesized single crystals with excellent properties can be used as promising downconverters to overcome the spectral mismatch in c-Si solar cells.

AB - Pr3+/Yb3+ co-doped Na5Y9F32 single crystals have been prepared by a modified Bridgman method to enhance the performance of c-Si solar cells. The prepared samples show intense NIR emission under visible excitation, indicating efficient energy transfer exists in the Pr3+-Yb3+ couple. The energy transfer mechanism between Pr3+ and Yb3+ ions has been identified via the electric dipole-dipole interaction. The first-order downconversion mechanism via cross-relaxation is responsible for converting one visible photon to two NIR photons with an optimal quantum efficiency of 180%. The synthesized single crystals with excellent properties can be used as promising downconverters to overcome the spectral mismatch in c-Si solar cells.

KW - Downconversion

KW - Energy transfer

KW - Optical properties

KW - Single crystal

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