Patent ID: 9679761
Date: 2017-06-13
CPC Classifications: B32B,C23C,H01L,Y10T

Claim:
1. A method for preparing a nanoporous ultra-low k dielectric thin film having a dielectric constant of about 2.3 or less, an elastic modulus of about 10 GPa or more, and a hardness of about 1.2 GPa or more, the method comprising: preparing a mixture of an organic silicate matrix-containing solution and a reactive porogen-containing solution, coating the mixture on a substrate to form a thin film; and heating the thin film with an ozone treatment by flowing ex-situ generated ozone during the heating at a temperature range of from about 100° C. to about 200° C. to prevent Si—CH wherein the mixture includes the reactive porogen-containing solution of from about 20 volume % to about 60 volume % with respect to the organic silicate matrix-containing solution.