Thin-film phosphors of Sr2B5O9Cl doped separately with Tm3+, Tb3+ and Mn2+ were deposited by spray pyrolysis of aqueous solutions. Because these phosphor films were activated at 600°C, they are suitable for use on glass substrates. The films containing Tm3+, Tb3+ and Mn2+ exhibited blue, green and yellow cathodoluminescence (CL), respectively. The chromaticity coordinates, dominant wavelength and purity were determined for each phosphor. Films deposited on aluminosilicate ceramic plates exhibited enhanced CL intensity compared to those on glass plates. The CL luminance and efficiency of each phosphor depended on the electron beam voltage and current density. Saturation effects were observed as the current density increased.
ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials