Thermal, structural and optical behaviour of Eu3+ ions in Zinc Alumino Boro-Silicate glasses for bright red emissions

Intense up-conversion luminescence from Dy3+-doped multi-component telluroborate glass matrix: Role of CuO nanoparticles embedment

“…5 displays the FTIR spectra of the prepared STAMB glasses in which different vibrational modes of the functional groups were revealed. The FTIR band traced at 693 cm −1 was ascribed to either the bending oscillation of the Al–O tetrahedral unit or the bending oscillation of B– O –B linkages, while the vibrational mode identified at 767 cm −1 was due to the bending vibrations of BO 3 -BO 4 units [ 33 ]. The bands at 919, 1265, and 1350 cm −1 are due to vibrations of different borate units in BO 3 /BO 4 groups [ 33 , 34 ].…”

“…The FTIR band traced at 693 cm −1 was ascribed to either the bending oscillation of the Al–O tetrahedral unit or the bending oscillation of B– O –B linkages, while the vibrational mode identified at 767 cm −1 was due to the bending vibrations of BO 3 -BO 4 units [ 33 ]. The bands at 919, 1265, and 1350 cm −1 are due to vibrations of different borate units in BO 3 /BO 4 groups [ 33 , 34 ]. The absence of bands at around 806 cm −1 confirmed the absence of the boroxol ring in the glass network.…”

Optical, Photo, and X‐Ray Luminescence Properties of Samarium Ions Doped with Borophosphate Glasses

“…In the current glasses, the highest intense transition 4 G 5/2 → 6 H 7/2 at 597 nm provides the orange color of luminescence. Using the equations provided in the literature, [ 27,28 ] the chromaticity coordinates ( x,y ) of the investigated glasses were obtained from the tristimulus values ( X , Y , Z ). The CIE chromaticity coordinates are found to be x = 0.59 and y = 0.41 in all of the present glasses, as shown in Table 2 .…”

Enhanced up- and down-conversion luminescence from Dy3+-Sm3+ co-doped B2O3-SrCO3-TeO2-Al2O3-MgO glass hosts: effects of CuO nanoparticles embedment

“…The FTIR band traced at 628 cm −1 was due to the stretching oscillation of the Te-O bond in trigonal bi-pyramidal units [41,42]. The vibrational modes identified at 882, 830, 1047, 1083, 1402, 1492, 1543, and 1634 cm −1 were due to vibrations of different borate units in BO 3 /BO 4 groups [43][44][45][46]. Moreover, the IR band 663 cm −1 was allotted to Sr-O and Al-O vibrations [43].…”