Large-grain crystallized metal chalcogenide film, colloidal solution of amorphous particles, and preparation methods
US10632441B2 · kind B2 · utility
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Key dates
| Filing date | Jul 21, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Oct 3, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing an aqueous or hydro-alcoholic colloidal solution of metal chalcogenide amorphous nanoparticles notably of the Cu2ZnSnS4 (CZTS) type and to the obtained colloidal solution.The present invention also relates to a method for manufacturing a film of large-grain crystallized semi-conducting metal chalcogenide film notably of CZTS obtained from an aqueous or hydro-alcoholic colloidal solution according to the invention, said film being useful as an absorption layer deposited on a substrate applied in a solid photovoltaic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.