Abstract:
A polysiloxane resin exhibiting high transparency even at a wavelength of 193nm (particularly 157nm) or below and excellent dry etching resistance, which comprises units represented by the general formula (I) and/or the general formula (II) and has acid−dissociable groups: (I) (II) (wherein R 1 is a fluorinated or fluoroalkylated monovalent aromatic group or a fluorinated or fluoroalkylated monovalent alicyclic group; and R 2 is a monovalent aromatic group described above, a monovalent alicyclic group described above, hydrogen, halogeno, a monovalent hydrocarbon group, haloalkyl, or amino). A radiation−sensitive resin composition excellent in sensitivity and resolution, which comprises (A) the above resin and (B) a radiation−sensitive acid generator.
Abstract:
A composition for forming a silicon film containing silicon particles and a dispersing medium, and a method for forming a silicon film wherein a coating film of the above composition is formed on a substrate and then, an instantaneous fusion, a heat treatment or an optical treatment is conducted. Using the composition and method, a poly-crystal silicon film having a desired thickness that may be used as a silicon film for a solar battery can be efficiently produced in a simple and easy way.