Patent ID: 11879067
Assignee: DAIKIN INDUSTRIES, LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC C  H  B  G | IPC B  C  H

Claim 0:
1. A film forming method of forming a film on a substrate top face including a first region in which a metal or semiconductor is exposed and a second region in which an insulator is exposed, the film forming method comprising:
a self-assembled monolayer (SAM) forming process of forming a SAM film of a perfluoropolyether group-containing compound represented by formula (1) or (2) below on the first region; and
a film growth process of forming a predetermined film on the second region after execution of the SAM forming process, wherein
the metal or semiconductor is at least one selected from a group consisting of tungsten, ruthenium, germanium, silicon, and molybdenum,
the insulator is at least one selected from a group consisting of aluminum oxide, hafnium oxide, and zirconia,
formulae (1) and (2) are as follows:

(Rf-PFPE)α′-X-(A)α  (1)

(A)α-X-PFPE-X-(A)α  (2)

in formula (1), Rf is an alkyl group having 1 to 16 carbon atoms optionally substituted with one or more fluorine atoms, and
in formulae (1) and (2):
PFPE is —(OC6F12)a—(OC5F10)b—(OC4F8)c—(OC3F6)d—(OC2F4)e—(OCF2)f—, where a, b, c, d, e, and f are integers of 0 or more and 200 or less, and the sum of a, b, c, d, e, and f is at least 1,
A is —COOH,
X is a single bond or a di- to deca-valent organic group, and
α is an integer of 1 to 9, and α′ is an integer of 1 to 9.