Influence of Iodine-Containing Solutions on the Condition of a Porous Silicon Surface and Its Photoluminescent Properties

A study of the role of polyacrylic acid in the surface modification of porous silicon with the aim of enhancing and stabilizing silicon photoluminescence

“…However, all of these processes are typically conducted at high temperatures, which lead to the occurrence of additional mechanical stresses in the porous layer and cracking of this layer. The authors of [5,6] proposed that porous silicon be exposed to a solution of poly acrylic acid, which belongs to the group of carboxylic acids. This treatment is conducted at room tempera ture; after treatment, porous silicon acquires another quality, which is useful for biological studies: being ini tially hydrophobic, it becomes hydrophilic [7].…”