Patent ID: 9633836
Date: 2017-04-25
CPC Classifications: H01L

Claim:
1. A method of forming a semiconductor device, comprising: introducing a plasma and organic silicon precursors into a chamber to form a preliminary dielectric layer on a wafer, wherein the plasma comprises oxygen radicals generated from an external plasma generator that is outside the chamber, the organic silicon precursors comprise carbon bridges and porogens, and the preliminary dielectric layer comprises the porogens; and forming a porous dielectric layer by removing at least some of the porogens from the preliminary dielectric layer, wherein the plasma is vertically introduced into the chamber and the organic silicon precursors are horizontally introduced into the chamber separately from the plasma, and the oxygen radicals and the organic silicon precursors react with each other in the chamber, wherein the organic silicon precursors comprise a compound represented by one of the following chemical formulas: wherein each of R wherein each of Ra, Rb, Rc, and Rd is one of hydrogen, alkyl, and alkoxy, and at least one of Ra, Rb, Rc, and Rd comprises one of the porogens.