Influence of calcination temperature on phase, powder morphology and photoluminescence characteristics of Eu-doped ZnO nanophosphors prepared using sodium borohydride

Red-emission analysis, Judd–Ofelt intensity parameters and laser properties of CdMgZnO:xEu3+ nanocrystals: the effects of Eu3+ concentration

“…These absorption lines are not found in the spectrum for the undoped (x = 0) sample (figure 3(a)). A similar f-f transition at 464 nm has been reported for Eu-doped ZnO [27].…”

Synthesis of Mesoporous Eu3+-Doped Zinc/Silicate Phosphors for Highly Selective and Sensitive Detection of Sulfide Ions

“…The results revealed that all samples demonstrate a characteristic peak associated with Zn–O–Si stretching at a wavenumber of 1010 cm –1 . The typical peak of Si–O–Si alone occurs at a wavenumber of 1120 cm –1 . Thus, the FT-IR spectra indicate that a homogeneous mutual bonding between the Zn 2+ ions and silicates can occur at a pH range of 8–12.…”

“…The typical peak of Si−O−Si alone occurs at a wavenumber of 1120 cm −1 . 27 Thus, the FT-IR spectra indicate that a homogeneous mutual bonding between the Zn 2+ ions and silicates can occur at a pH range of 8−12.…”

Environment-Dependent Eu2+-Activated Ba3CaK(PO4)3 toward White-Light Emission by Chemical Cosubstitution of the (BO3)3– Anion Group

“…42,43 Moreover, two sharp absorption peaks located at 740 and 1221 cm −1 appear with the introduction of (BO 3 ) 3− and are attributed to the bending and stretching vibrations of the triangle borate group. 44,45 Meanwhile, the absorption bands that originated from (PO 4 ) 3− decreased as the borate content increased. In addition, the positions of the (BO 3 ) 3− and (PO 4 ) 3− groups slightly varied in wavenumber with increasing borate concentration, demon-strating variation of the coordination conditions for Eu 2+ .…”

“…Becasue of the presence of the (PO 4 ) 3– and (BO 3 ) 3– groups, the vibration of these two groups can be observed in the FTIR spectra. The stretching and bending vibrations of orthophosphate (PO 4 ) 3– groups lead to three different peaks located at 1025, 940, and 555 cm –1 , respectively. , Moreover, two sharp absorption peaks located at 740 and 1221 cm –1 appear with the introduction of (BO 3 ) 3– and are attributed to the bending and stretching vibrations of the triangle borate group. , Meanwhile, the absorption bands that originated from (PO 4 ) 3– decreased as the borate content increased. In addition, the positions of the (BO 3 ) 3– and (PO 4 ) 3– groups slightly varied in wavenumber with increasing borate concentration, demonstrating variation of the coordination conditions for Eu 2+ .…”