“…One of the early lanthanide elements, lanthanum, is itself used in the field of ceramics, thermal stability, solar energy, catalysis, photostrictor, dye sensitizers, scintillators, optoelectronic and photonic studies [3][4][5][6][7][8][9][10][11][12]. Due to wide applications in the field of luminescence [13][14][15], lanthanum is attracting the attention in the photo-physical research area. The term photophysical is mainly concerned with the absorption, excitation and emission processes [16,17], which leads to the luminescence characteristics.…”