High-speed hybrid perovskite processing
US10734582B1 · kind B1 · utility
Inventors
Key dates
| Filing date | Aug 20, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Aug 20, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
Abstract
A method for increasing the speed of aerosol jet assisted printing a layered perovskite structure comprises applying a PEDOT:PSS layer to a substrate; applying an aerosol mist containing methylammonium iodide and lead iodide, with or without additives, atop the PEDOT:PSS layer with an aerosol jet nozzle; and holding the structure to form a methylammonium lead iodide (CH3NH3PbI3) perovskite thin film layer. The substrate may be an ITO glass or plastic substrate, and the PEDOT:PSS layer may be applied by a process selected from spin-coating, inkjet-printing, slot-die-coating, aerosol jet printing, physical vapor deposition, chemical vapor deposition, and electrochemical deposition. The aerosol mist is generated from a single ink comprising all the constituents of methylammonium lead iodide either dissolved or suspended in one or more compatible solvents or co-solvents. The holding of the CH3NH3PbI3 layer may be performed at about 25-120° C. or lower for 96 hours or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.