Abstract
Gd2-xSi2O7:xEr3+ (x = 1–6 mol%) green light-emitting nanomaterials were prepared via Solution-combustion (SC) synthetic route. Structural and spectrophotometric analysis were executed to recognize the phase identification and luminescence characteristics of the designated nanophosphors, respectively. The obtained crystallographic parameters clearly indicated that the synthesized nanomaterials are structured into the triclinic phase with P-1 space group. The enlarged view of concentration dependent XRD patterns of Gd2Si2O7:Er3+ samples specifies that as the Er3+ ion concentration increases, the diffraction peaks show a regular shift towards higher value of 2 theta. The average particle size lies in range of several nanometres which distinctively rationalizes the requirements of these samples in lighting applications. Under NUV excitation at 389 nm, Gd2Si2O7:Er3+ samples exhibit cool green light emission corresponding to 4S3/2→4I15/2 (553 nm) electronic transitions of dopant ion. The dipolar-dipolar interaction is plausible for the energy transference amongst the dopants in Gd2Si2O7:Er3+ materials. The triple-exponential fitting behavior explains the possibility of occurrence of three different cationic sites for the Er3+ ions in the host matrix.
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