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Efficient near‐infrared pyroxene phosphor LiInGe 2 O 6 :Cr 3+ for NIR spectroscopy application
Author(s) -
Liu Tianyao,
Cai Hao,
Mao Ning,
Song Zhen,
Liu Quanlin
Publication year - 2021
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.17856
Subject(s) - phosphor , near infrared spectroscopy , materials science , spectroscopy , light emitting diode , absorption (acoustics) , analytical chemistry (journal) , infrared , optoelectronics , optics , chemistry , physics , quantum mechanics , composite material , chromatography
Broadband near‐infrared phosphors are essential to realize nondestructive analysis in food industry and biomedical areas. Efficient long‐wavelength (>830 nm) phosphors are strongly desired for practical applications. Herein, we demonstrate an efficient broadband NIR phosphor LiInGe 2 O 6 :Cr 3+ , which exhibits a broad NIR emission peaking at ~880 nm with a full width at half maximum of 172 nm upon 460 nm excitation. The internal/external quantum efficiencies of LiInGe 2 O 6 :Cr 3+ are measured to be 81.2% and 39.8%, respectively. The absorption of the phosphor matches well with commercial blue LEDs. Using the fabricated phosphor converted LED illuminating human palm, distribution of blood vessels can be clearly recognized under a NIR camera. These results indicate that LiInGe 2 O 6 :Cr 3+ is a promising candidate to be used in future non‐destructive biological applications.