Explanation

The inorganic powder materials that can luminescence light under certain excitation conditions is called luminescence powder. According to different excitation modes, it can be divided into photoneneneba luminescence materials, cathode ray luminescent powder materials, radioactive and X-ray luminescence materials, electroluminescence materials, etc. According to the classification of matrix materials, zinc sulfide is the most important kind of light luminescence phosphor. It is also an effective luminescence materials excited by cathode ray, radiation and X-ray, and is also one of the most important materials of electroluminescence. The production usually adopts the process technology of high-temperature solid-state reaction. Due to the physical reasons for frequency broadening, the shape of different spectral lines also varies. Usually, theoretically simplified spectral line shapes include Lorentz and Gaussian lines, and the corresponding line widths are called Lorentz and Doppler line widths. The actual observed line shape is between the two.

Classification