Researchers at NREL have developed a simple, low-cost, low temperature synthesis to prepare single crystal perovskites, such as MAPbBr3. This method involves heating a stoichiometric solution of PbBr2 and MABr at a temperature ranging from 40°C to 100°C in an organic solvent (e.g. dimethylformamide) to produce single crystal MAPbBr3 perovskites. In addition, this novel deposition method – alongside enhancing film crystallinity, as demonstrated through X-ray diffraction results – enables the control of doping based on the amount of Cl source added to the precursor solution.
This technology is within the Film Deposition category of NREL’s perovskite portfolio. For further information regarding NREL's broader perovskite portfolio, please visit NREL's Perovskite Patent Portfolio website.
The Film Deposition category consists of novel methods for more rapid, less expensive, and more effective means of depositing perovskite films. These techniques have been published in multiple peer-reviewed journals and are prepared for scaling to commercial levels.
For more information, contact Bill Hadley at Bill.Hadley@nrel.gov.
U.S. Patent # 9,701,696 B2
Applications and Industries
- Film Deposition
- Enables control of doping
- Enhanced crystallinity