In:
Journal of Materials Chemistry C, Royal Society of Chemistry (RSC), Vol. 10, No. 9 ( 2022), p. 3547-3552
Abstract:
The temperature-dependent optical properties of lanthanide-doped phosphors have been enthusiastically investigated in the fields of biomedicine, night-vision security, and optical information storage. In this work, the dynamically varying temperature-dependent photoluminescence and long persistent luminescence at low temperature (4–250 K) in the CaSrNb 2 O 7 :Pr 3+ phosphor are explored. The photoluminescence of CaSrNb 2 O 7 :Pr 3+ is white and the matrix emits cyan at 470 nm under 325 nm excitation at 84 K, whereas the CaSrNb 2 O 7 :Pr 3+ phosphor exhibits bright red long persistent luminescence for more than 400 s at 250 K. Moreover, the CaSrNb 2 O 7 :Pr 3+ exhibits a dramatic photoluminescence transition from white to red as the temperature rises by thermal quenching and the trap compensation luminescence. This optical property at low temperature shows great superiority not only in biomedicine and cryotherapy as a means of visualizing safe and non-toxic detection but also opens up new opportunities in the field of space remote sensing superconductivity.
Type of Medium:
Online Resource
ISSN:
2050-7526
,
2050-7534
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
detail.hit.zdb_id:
2702245-6
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