Long Persistence Phosphors

The basic formula of rare earth aluminate long persistence phosphor is SrAlO₄: Eu, Dy. By modifying its composition with different additives, the phosphor can emit a color of green, yellow, blue, white, or other colors. After activating by either visible light or ultraviolet, its emitting duration can reach up to 12 hours and its intensity is much higher than zinc sulfide (ZnS). These features make the rare earth long persistence phosphor a much better candidate over other phosphors such as ZnS in many applications. Currently, this phosphor is widely used as a pigment added to paints, rubbers, and plastics for applications such as billboards, traffic signs, decorations, and toys. For more information about its properties and applications please contact us.

Phosphors for Trichromatic Lamps:

Stanford Materials Company supplies both individual color (red, green, and blue) lamp phosphors and pre-mixed lamp phosphors with temperatures ranging from 2700 to 6700 K. Both aluminate and phosphate phosphors are available. With their fine-tuned particle size distributions, these phosphors can be directly used to lamp tubes without a milling process or with a gentle deagglomeration process. These phosphors are especially suitable for making high-performance energy-saving lamps. Inquiries about custom-made phosphors are also welcome.

Phosphors for Color TV Screen:

The technology and production line, which we use to produce our color TV phosphors, were adopted from Toshiba of Japan. Now, these color TV phosphors are widely used for the production of 18" to 29" TV tubes. The chemical and physical properties, as well as secondary characteristics, such as screening characteristics, of these phosphors, are strictly controlled to ensure the production of high-quality TV tubes.