Tunable luminescence of CaO-Al 2 O 3 -GeO 2 glasses

摘要: We report tunable luminescence in oxygen-deficient CaO-Al2O3-GeO2 glasses. The glass samples were prepared by adding metal Al instead of corresponding oxide (Al2O3). Efficient blue and red emissions observed when excited 300 370 nm ultraviolet light, respectively. By adjusting the content Al, we could control quantities defects which results from to white red. Furthermore resultant glasses have shown bright excitation wavelength tuned 335nm. Our method opens a new route for light illumination.