Two-dimensional perovskite templates for durable, efficient formamidinium perovskite solar cells
Rice University · Lawrence Berkeley National Laboratory · +13 more institutions
Abstract
We present a design strategy for fabricating ultrastable phase-pure films of formamidinium lead iodide (FAPbI 3 ) by lattice templating using specific two-dimensional (2D) perovskites with FA as the cage cation. When a pure FAPbI 3 precursor solution is brought in contact with the 2D perovskite, the black phase forms preferentially at 100°C, much lower than the standard FAPbI 3 annealing temperature of 150°C. X-ray diffraction and optical spectroscopy suggest that the resulting FAPbI 3 film compresses slightly to acquire the (011) interplanar distances of the 2D perovskite seed. The 2D-templated bulk FAPbI 3 films exhibited an efficiency of 24.1% in a p-i-n architecture with 0.5–square centimeter active area…
Citation impact
- FWCI
- 30.80
- Percentile
- 100%
- References
- 66
Authors
25Topics & keywords
- Formamidinium
- Perovskite (structure)
- Annealing (glass)
- Iodide
- Materials science
- Diffraction
- Phase (matter)
- Template
Funding
- NSNational Science FoundationAwards: 20-587, DE-AC02-05CH11231, DE-AC02-06CH11357, NSF 20-587, DE-SC0012704
- UDU.S. Department of EnergyAwards: -AC02-05CH11231, AC02-06CH11357, 05CH11231, AC02-05CH11231, SC0012704, DE-AC02, 06CH11357, DE-AC02-05CH11231, DE-AC02-06CH11357, DE-AC02-
- RURice University
- ECEuropean CommissionAwards: EU-H2020, H2020, DE-AC02-05CH11231, DE-AC02-06CH11357, 861985
- DFDeutsche ForschungsgemeinschaftAwards: DE-AC02-06CH11357, DE-AC02-05CH11231, KO6414
- CSChina Scholarship CouncilAwards: DE-AC02-06CH11357, 202107990007, DE-AC02-05CH11231
- IUInstitut Universitaire de FranceAward: DE-AC02-05CH11231
- OOOffice of ScienceAwards: DE-AC02-06CH11357, AC02-05CH11231, -AC02-05CH11231, DE-AC02, 06CH11357, SC0012704, AC02-06CH11357, DE-SC0012704
- OOOffice of Energy Efficiency and Renewable EnergyAwards: AC02-06CH11357, AC02-05CH11231, DE-AC02-06CH11357, DE-SC0012704, DE-AC02-05CH11231, DE-EE0010738
- H2Horizon 2020 Framework ProgrammeAwards: DE-AC02-06CH11357, 861985
- NDNational Defense Science and Engineering Graduate
- OOOffice of Naval ResearchAwards: DE-AC02-06CH11357, DE-AC02-05CH11231
- BEBasic Energy SciencesAwards: DE-AC02, DE-SC0012704, AC02-05CH11231, DE-AC02-05CH11231, AC02-06CH11357, SC0012704, 06CH11357, -AC02-05CH11231
- IOInstitute of Circulatory and Respiratory Health
- ARArmy Research OfficeAward: DE-AC02-05CH11231
- ANArgonne National LaboratoryAwards: DE-AC02, DE-SC0012704, DE-AC02-05CH11231, 06CH11357, AC02-06CH11357
- BNBrookhaven National LaboratoryAwards: SC0012704, DE-AC02-05CH11231, DE-AC02-06CH11357
- AFAir Force Research LaboratoryAward: DE-SC0012704