Spectral investigations of less explored rod-shaped green emitting Ba2SiO4:Tb3+ phosphors for LED and photovoltaic applications

Abstract Green emitting Ba2SiO4:Tb3+ crystalline semiconducting powders have been synthesized using modified solid-state reaction technique.Synthesized Ba2SiO4:Tb3+ phosphor powders were characterized structurally and morphologically by employing X-ray diffraction (XRD) and Scanning electron microscopy (SEM) techniques. The photoluminescent characterization identified that the sample exhibits intense green photoluminescence (PL) emission with several peaks in the range (490-622 nm) which are attributed to the 5D4-7Fj transition of Tb3 + . The excitation spectrum identified that the sample has a broad excitation ranging from UV to visible (350-500 nm). Additionally, the CIE coordinates were calculated to determine its color purity. PL measurement revealed that the synrthesised phosphor shows significant overalapping with commonly used Polymers and small-molecules used in organic solar cells. The detailed structural, morphological and photoluminescence characterization revealed that the material is a potential candidate for for solid-state lighting and photovoltaic applications.