• Anjali Yadav
• R.K. Kuraria
• Shashi R. Kuraria
• Roshni Haldkar

Mechanoluminescence (ML), the phenomenon of light emission induced by mechanical stimuli, has emerged as a powerful tool for developing next-generation stress-sensing and optoelectronic devices. This study presents a comprehensive investigation of ML properties in Eu³⁺, Dy³⁺, and Ce³⁺ doped silicate-based nanophosphors using SrZrSi₂O₇ and MgZrSi₂O₇ as host lattices. The phosphors were synthesized via solid-state routes and subjected to systematic doping to determine the optimal activator concentration for maximum ML intensity. Structural and morphological characterizations confirmed the successful incorporation of rare-earth ions into the host lattice without significant phase distortion. The mechanoluminescent performance was evaluated under controlled mechanical impact, revealing distinct emission behaviors based on the dopant type and concentration. Eu³⁺ and Dy³⁺ doped samples exhibited sharp, symmetric emission peaks associated with trap-mediated recombination mechanisms, while Ce³⁺ doped samples showed broad emission due to 5d–4f transitions. An optimal dopant concentration was identified for each system—0.5 mol% Eu³⁺ in SrZrSi₂O₇, 3 mol% Eu³⁺ in MgZrSi₂O₇, 0.1–0.2 mol% Dy³⁺ in both hosts, and 3 mol% Ce³⁺ in MgZrSi₂O₇—beyond which concentration quenching reduced ML efficiency. The observed ML responses were strongly influenced by trap depth, defect concentration, piezoelectricity, and crystal symmetry of the host matrices. These findings provide valuable insights into designing highly efficient mechanoluminescent materials with tunable emission for applications in structural health monitoring, smart displays, and tactile imaging technologies.

Mechanoluminescence, Silicate-based nano phosphors, Application.

"MECHANOLUMINESCENCE PROPERTIES OF EU3+, DY3+, AND CE3+DOPED SILICATE NANOPHOSPHORS FOR STRESS-SENSING APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.12, Issue 6, page no.h625-h636, June-2025, Available :http://www.jetir.org/papers/JETIR2506777.pdf

"MECHANOLUMINESCENCE PROPERTIES OF EU3+, DY3+, AND CE3+DOPED SILICATE NANOPHOSPHORS FOR STRESS-SENSING APPLICATIONS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.12, Issue 6, page no. pph625-h636, June-2025, Available at : http://www.jetir.org/papers/JETIR2506777.pdf