Published Paper Details:

In the present work we describes mainly the optical absorption, photoluminescence (PL) characteristics of Sm3+ ions doped sodium alumino-borate phosphors Na2Al2B2O7 (NABO). The fine polycrystalline powder samples of NABO:Sm3+ has been prepared by a solution combustion technique. Powder X-ray diffraction and scanning electron microscopy studies were used to characterize the prepared combustion powder. Photoluminescence spectra revealed that samarium ions are present in trivalent oxidation states. The PL excitation spectra of NABO:Sm3+ consists of several bands peaking at 305 nm, 330 nm, 344 nm, 361 nm, 374 nm, 403 nm, 462 nm and 473 nm. The excitation spectrum monitored at 403 nm emission consists of green emission band peaking at 565 nm, orange emission band peaking at 603 nm and red emission band peaking at 651 nm. Since the prominent excitation peaks are above 350 nm, the phosphor may useful for solid state lighting application.