The method of preparing a matrix template-assisted micro-pillar structure CsI (Tl) scintillation conversion screen and its application

The present invention relates to a template-assisted micro-pillar structure matrix CsI (Tl) scintillation conversion screen preparation and to their use. This method uses the template substrate is a rectangular matrix engraved silicon microwell array, to CsI (Tl) as the raw material powder, thermal evaporation technique, film preparation flashes on the template substrate through the substrate to the template microporous cycle regulation or the like, to achieve effective control of the micro-column conversion screen morphology, uniformity of the line width, the arrangement of the like, to obtain a micro-column matrix CsI having structure (Tl) scintillation conversion screen, to screen nearly vertical and good crystalline properties, flashing microcolumns regular arrangement with a subsequent probe may be better coupling member, so that the spatial resolution of the X-ray imaging device is improved, can meet high spatial resolution and high detection efficiency requirements simultaneously. After preparation obtained by this method CsI (Tl) having a micro-pillar structures scintillator matrix conversion screen coupled to the photodetector element may be applied to a high resolution digital X-ray imaging. The invention is suitable for industrial production, promotion of high-value applications.