Efficient conversion of broad UV–visible light to near-infrared emission in Mn 4+ /Yb 3+ co-doped CaGdAlO 4 phosphors

Jianxu Hu, Yuanpeng Zhang, Bin Lu, Haiping Xia, Huanqing Ye, Baojiu Chen

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Mn 4+ /Yb 3+ co-doped CaGdAlO 4 are prepared to achieve efficient spectral conversion. XRD Rietveld refinement analysis is performed to obtain the structural information of the synthesized materials. The results indicate the Al 3+ and Gd 3+ sites are substituted by the Mn 4+ and Yb 3+ ions, respectively. Intense NIR emission within the most sensitive response region of c-Si solar cells is observed under UV–visible excitation, indicating the existence of efficient energy transfer from Mn 4+ to Yb 3+ ions. The dipole-dipole interaction is verified to be the dominant energy transfer mechanism among the Mn 4+ -Yb 3+ pair. The linear dependence of energy transfer rate on the Yb 3+ concentration indicates that one NIR photon is generated with the absorption of one UV–visible photon. The broad excitation spanning from 250 to 600 nm monitored at NIR emission demonstrates that the Mn 4+ ions in the CaGdAlO 4 host can be efficient sensitizers for Yb 3+ ions to enhance the performance of c-Si cells.

Original languageEnglish
Pages (from-to)189-201
Number of pages13
JournalJournal of Luminescence
Volume210
DOIs
StatePublished - Jun 2019

Funding

This work was supported by the National Natural Science Foundation of China (Grant Nos. 51772159, 51472125, 11504188, U1504626 and 51702171); 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 , U1504626 and 51702171 ); the Natural Science Foundation of Zhejiang Province (Grant No. LZ17E020001 ); and K.C. Wong Magna Fund in Ningbo University .

FundersFunder number
National Natural Science Foundation of China11504188, 51772159, 51702171, 51472125, U1504626
Ningbo University
Natural Science Foundation of Zhejiang ProvinceLZ17E020001

    Keywords

    • Downconversion
    • Energy transfer
    • Mn ions

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