Bandgap-tunable perovskite materials and methods of making the same
US11155471B2 · kind B2 · utility
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Key dates
| Filing date | Aug 30, 2018 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Feb 28, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Bandgap-tunable perovskite compositions are provided having the formula CsPb(A)xBy)3, wherein A and B are each a halogen. The mixed halide perovskite composition has a morphology which suppresses phase segregation to stabilize a tuned bandgap of the mixed halide perovskite composition. For example, the perovskite may be in the form of nanocrystals embedded in a non-perovskite matrix, which, for example, may have the formula Cs4Pb(A)xBy)6, wherein A and B are each a halogen. Solar cells and light-emitting diodes comprising the mixed perovskite compositions are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.