The Study Of Writing Display Device Of Llp Material And Afterglow Quenching

In this paper, we present a new application of long-lasting phosphor (LLP) materials. The divice is invented to write on display and erase the afterglow by laser. This device is controlled by the two different tilting mirrors with the stepped motor with Arduino. Leading-out the correlative pictures from the open source graph, the 405nm laser dot is able to move on the screen to write, draw and display.The wipping component is designed and tested to wipe the afterglow. According to the thermoluminescent (TL) dynamics, the quenching wavelength is conduct aim to LLP properties.This study is conduct to theoretically and experimentally erase the afterglow by radiation.The trap depths of ZnS:Cu and SrAl2O4:Eu2+ Dy3+ are figured out according to the Chen’s half-width methods.And then the accurate IR wavelength to release the trapped electons in proper depth.The spectrum of Bromine tungsten lamp is obtained by Zolix Omni-λ500.we select every single wavelengh of energy nm by nm from near IR and deliver it by crystal fiber.The glow fading curves of ZnS:Cu and SrAl2O4:Eu2+ Dy3+ are figured under IR. The TSL spectrum of ZnS:Cu and SrAl2O4: Eu2+ Dy3+are measured with a thermoluminescence meter.The result that we calculate with half-width formula match to the data by grating spectrometer system.This study provide pioneer experiment and theoretical base for further study of IR quenching wavelength about more variety of LLP material.