Luminescence properties of Cr3+ ions in Na2ZnP2O7 crystal

A High Efficiency Trivalent Chromium-Doped Near-Infrared-Emitting Phosphor and Its NIR Spectroscopy Application

“…This technology has the characteristics of rapid and noninvasive detection and plays an important role in improving and solving the existing problems related to the food safety, and being considered as an effective detection equipment for early cancer diagnosis. − The basic principle of this technology is to irradiate the measured object with a broadband NIR light. The substance contained in the measured object will absorb a specific light band and cause the remarkable change of the scattering spectrum, and then the type and content of the specific substance are evaluated and calculated according to the change of the shape and intensity of the scattering spectrum. , However, the lack of efficient and miniaturized broadband near-infrared light sources is one of the difficulties in introducing, developing, and utilizing this technology.…”

“…The substance contained in the measured object will absorb a specific light band and cause the remarkable change of the scattering spectrum, and then the type and content of the specific substance are evaluated and calculated according to the change of the shape and intensity of the scattering spectrum. 5,6 However, the lack of efficient and miniaturized broadband near-infrared light sources is one of the difficulties in introducing, developing, and utilizing this technology.…”

Synthesis and luminescence spectroscopy study of a novel orange‐red colour emissions phosphor based on Tb3+ ion‐doped Na2ZnP2O7

“…Na 2 ZnP 2 O 7 :xTb 3+ (x = 0, 1, 1.25, 1.5 and 1.75 mol%) was prepared using the solid‐state reaction method. Appropriate amounts of starting materials (purity of 99.99% Sigma Aldrich) ZnO, Na 2 CO 3 , NH 4 H 2 PO 4 , and xTb 2 O 3 (where x is the concentration) were crushed thoroughly in an agate mortar and progressively heated in a tube furnace to allow ammonia, water, and carbon dioxide vapours to appear, then the mixture was heated at 720°C for 36 h. [ 19,20 ]…”

“…Na 2 ZnP 2 O 7 has been prepared as a host material for activator ions such as for a green phosphor (Na 2 ZnP 2 O 7 :Cr 3+ ), [ 20 ] reddish‐orange phosphors (Na 2 ZnP 2 O 7 :Eu 3+ ), [ 21 ] red phosphors (Na 2 ZnP 2 O 7 :Mn 2+ ) [ 22 ] and a near UV‐violet phosphor (Na 2 ZnP 2 O 7 :Ce 3+ ). [ 23 ] But, to the best of our knowledge, there has been no report in the literature dealing with the luminescence properties of a Tb 3+ ion‐doped Na 2 ZnP 2 O 7 phosphor.…”