Photoluminescence optimization of BCNO phosphors synthesized using citric acid as a carbon source

Bebeh W. Nuryadin a, Tri Puspita Pratiwi a, Ferry Iskandar a,⇑, Mikrajuddin Abdullah a, K. Khairurrijal a, Takashi Ogi b, Kikuo Okuyama b

a Department of Physics, Faculty of Mathematics and Natural Sciences, Institut Teknologi Bandung, Jalan Ganesa 10, Bandung 40132, Indonesia
b Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan

Advanced Powder Technology 25 (2014) 891–895

Citric acid was used as carbon source for the optimization of the photoluminescence (PL) performance of boron carbon oxynitride (BCNO) phosphor. Citric acid was chosen as an alternative carbon source because of its simple molecular structure, low decomposition temperature, relative inexpensiveness, and environ- mental friendliness. The prepared sample exhibited a single, homogeneous, and broad photolumines- cence emission band whose peak varied from near-UV (400 nm) to yellow-visible (500 nm) upon excitation at 365 nm. The effects of varying the synthesis temperature, molar ratio of the carbon/boron and nitrogen/boron sources, and addition of SiO2 nanoparticles on the PL properties were also studied. The optimized BCNO phosphors may find potential use in white LED applications.

Download Full Paper