Anti-Stokes photoluminescence from LiY1-xErxF4 nanocrystals

Mia I. Baca; Shruti I. Gharde; Quang Tin Nguyen; Erum Jamil; Sergei A. Ivanov; Sadhvikas Addamane; Winson C. H. Kuo; Dale L. Huber; Marek Osiński

doi:10.1117/12.3006612

13 March 2024 Anti-Stokes photoluminescence from LiY_1-xEr_xF₄ nanocrystals

Mia I. Baca, Shruti I. Gharde, Quang Tin Nguyen, Erum Jamil, Sergei A. Ivanov, Sadhvikas Addamane, Winson C. H. Kuo, Dale L. Huber, Marek Osiński

Author Affiliations +

Proceedings Volume 12902, Photonic Heat Engines: Science and Applications VI; 1290208 (2024) https://doi.org/10.1117/12.3006612
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

We have successfully synthesized near-infrared photoluminescent erbium-doped lithium yttrium fluoride nanocrystals using a facile coprecipitation approach. The nanocrystals are capped with oleic acid, enabling dispersion in nonpolar solvents such as toluene and cyclohexane. The relative amounts of yttrium and erbium precursors were adjusted during the synthesis to obtain different concentrations of Er between 1% and 15%. The composition and structure of the nanocrystals were studied via X-ray fluorescence spectroscopy and X-ray powder diffraction. The nanocrystals were optically characterized by extensive photoluminescence studies, including Stokes and anti-Stokes emission. When excited with 1.55-μm light, the nanocrystals displayed strong anti-Stokes emission associated with the ⁴I_13/2 → ⁴I_15/2 transition. These nanocrystals therefore have a high potential to be used in optical cooling applications with telecommunication-wavelength excitation.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Mia I. Baca, Shruti I. Gharde, Quang Tin Nguyen, Erum Jamil, Sergei A. Ivanov, Sadhvikas Addamane, Winson C. H. Kuo, Dale L. Huber, and Marek Osiński "Anti-Stokes photoluminescence from LiY_1-xEr_xF₄ nanocrystals", Proc. SPIE 12902, Photonic Heat Engines: Science and Applications VI, 1290208 (13 March 2024); https://doi.org/10.1117/12.3006612

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