Enhanced luminescence in co-doped LaCa4O(BO3)3 phosphor: Photoluminescence, mechanoluminescence and thermoluminescence study

Mechanoluminescence (ML), Thermoluminescence (TL) and Photoluminescence (PL) characterisation of gamma exposed LaCa4O(BO3)(3):Cu and LaCa4O(BO3)3:Cu, Mg are studied and synthesised by solid-state reaction process. The phase clarity, crystallinity and configuration of the material is established by XRD while FTIR spectrum of the sample confirms its functional group (BO3)3 and phonon frequency of the molecules in the host. B-O triangle structure defines its constructional inflexibility. SEM characterisation shows particle size of the sample in the micro range and average crystallite size and improvement in the particle size is observed when sample LaCa4O (BO3)(3):Cu is mixed with Mg2+. Improvement on the ML, TL and PL peaks are observed on co doped samples suggest that Mg transfer its energy to Cu ion. The prepared mix borate may be important for optical need due to improvement in the power of the assimilation band and sensorial applications as it respond linearly to gamma-ray dose.