Single band luminescence of Bi3+ and the intensity modulation in potassium borosilicate glasses

Two series of Bi-doped borosilicate glasses with compositions of different kinds and concentrations of alkali metal ions have been prepared by a melt-quenching menthod. Fluorescence spectra, lifetime, X-ray photoelectron spectroscopy (XPS) and fourier transform infrared (FTIR) spectra were done for optical characterization and structure analysis. The single band emission at around 400 nm under 290 nm and X-ray radiation were observed in the fluorescence spectras and the lifetime is 245 ns, which means the single band luminescence originated from of Bi 3+ in the borosilicate glasses. XPS and FTIR spectra show that Bi 3+ does not convert to other valence state and the content of [BO 4 ] is the main factor affecting the luminescence of Bi 3+