Patent ID: 11921427
Assignee: LAM RESEARCH CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 24:
25. A method of making a lithographic hard mask on the surface of a substrate, comprising:
providing a substrate comprising a substrate material having a surface comprising exposed hydroxyl groups;
depositing an imaging layer on the surface, the imaging layer comprising hydrocarbyl-terminated SnOx;
selectively irradiating the imaging layer, such that the imaging layer comprises an irradiated region wherein a hydrocarbyl-substitution on a SnOx moiety of the hydrocarbyl-terminated imaging layer is removed and/or converted to a hydrogen-terminated SnOx, and an unirradiated region wherein the imaging layer comprises the hydrocarbyl-terminated SnOx; and
processing the imaging layer by reacting the irradiated region, the unirradiated region, or both, with one or more reagents to selectively add material to or remove material from the imaging layer.