Invention Grant
- Patent Title: Method for fabrication of copper-indium gallium oxide and chalcogenide thin films
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Application No.: US16718575Application Date: 2019-12-18
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Publication No.: US11271124B2Publication Date: 2022-03-08
- Inventor: Walter J. Dressick , Jasbinder S. Sanghera , Woohong Kim , Colin C. Baker , Jason D. Myers , Jesse A. Frantz
- Applicant: The Government of the United States of America, as represented by the Secretary of the Navy
- Applicant Address: US VA Arlington
- Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee: The Government of the United States of America, as represented by the Secretary of the Navy
- Current Assignee Address: US VA Arlington
- Agency: US Naval Research Laboratory
- Agent Rebecca L. Forman
- Main IPC: H01L31/032
- IPC: H01L31/032 ; H01L21/02 ; H01L31/0352 ; H01L31/18
Abstract:
A composition of matter having a coated silicon substrate with multiple alternating layers of polydopamine and polyallylamine bound copper-indium-gallium oxide (CIGO) nanoparticles on the substrate. A related composition of matter having polyallylamine bound to CIGO nanoparticles to form PAH-coated CIGO nanoparticles. A related CIGO thin film made via conversion of layer-by-layer assembled CIGO nanoparticles and polyelectrolytes. CIGO nanoparticles are created via a flame-spray pyrolysis method using metal nitrate precursors, subsequently coated with polyallylamine (PAH), and dispersed in aqueous solution. Multilayer films are assembled by alternately dipping a substrate into a solution of either polydopamine or polystyrenesulfonate and then in the CIGO-PAH dispersion to fabricate CIGO films as thick as 1-2 microns.
Information query
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