Post‐anodization filtered illumination of porous silicon in HF solutions: An effective method to improve luminescence properties

摘要: A useful method is presented to improve the luminescence efficiency of porous silicon (PS) based on post‐anodization illumination samples in HF solutions. In present performed by a white lamp through sharp‐cut long‐wavelength‐pass filters remove short wavelength component from light. The PS prepared this exhibited visible photoluminescence (PL) with an one order magnitude higher than those illuminated without filters. improvement attributed reduction deteriorative surface oxidation Si crystallites PS. filtered technique also produce larger PL blue shift and precise control spectra.