Method of preparing perovskite light-emitting layer and display application thereof
US11404679B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Oct 11, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of preparing a film and a light-emitting device are disclosed. The method includes: providing at least one gas-phase source above a substrate, the at least one gas-phase source made of materials comprising a perovskite material; and controlling an evaporation rate of the at least one gas-phase source to form a perovskite film. In the method provided by the present invention, a perovskite light-emitting layer is prepared by gas-phase source evaporation coating without an organic solvent, which avoids miscibility between the organic solvent and other layers and improves compatibility between the perovskite material and other film materials, thereby realizing the low preparation cost and the simple preparation process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.