Near-Infrared Broadband ZnTaO:Cr Phosphor for pc-LEDs and Its Application to Nondestructive Testing.

Inorg Chem

Hebei Key Laboratory of Optic-Electronic Information and Materials, College of Physics Science and Technology, Hebei University, Baoding 071002, China.

Published: July 2022

Broadband near-infrared (NIR) phosphors are necessary materials for developing portable NIR light sources. Moreover, exploiting an NIR phosphor with a main peak located beyond a wavelength of 900 nm remains a challenge because this spectral range has great potential in biological nondestructive testing and solution testing. In this study, a range of Cr-doped ZnTaO (ZTO) phosphors were completely synthesized by a solid-state method, which show broadband Cr emission centered at 935 nm with a large full width at half maximum (FWHM) of 185 nm due to two distorted octahedral sites. A packaged phosphor-converted light-emitting diode (pc-LED) device is used to penetrate a 5-cm-thick chicken breast and identify diverse solutions based on differences in the measured transmission spectra. The results indicate broad application prospects in the field of biological tissue penetration and solution analysis.

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http://dx.doi.org/10.1021/acs.inorgchem.2c01403DOI Listing

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