Guanine-Stabilized Formamidinium Lead Iodide Perovskites.
- Hong L Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Milić JV Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Ahlawat P Laboratory of Computational Chemistry and Biochemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Mladenović M Laboratory of Computational Chemistry and Biochemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Kubicki DJ Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Jahanabkhshi F Laboratory of Computational Chemistry and Biochemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Ren D Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Gélvez-Rueda MC Delft University of Technology, 2629, HZ, Delft, The Netherlands.
- Ruiz-Preciado MA Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Ummadisingu A Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Liu Y Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Tian C Wuhan National Lab for Optoelectronics, Wuhan, 430074, Hubei, China.
- Pan L Laboratory of Photomolecular Science, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Zakeeruddin SM Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Hagfeldt A Laboratory of Photomolecular Science, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Grozema FC Delft University of Technology, 2629, HZ, Delft, The Netherlands.
- Rothlisberger U Laboratory of Computational Chemistry and Biochemistry, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Emsley L Laboratory of Magnetic Resonance, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- Han H Wuhan National Lab for Optoelectronics, Wuhan, 430074, Hubei, China.
- Graetzel M Laboratory of Photonics and Interfaces, Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
- 2019-12-18
Published in:
- Angewandte Chemie (International ed. in English). - 2020
English
Formamidinium (FA) lead iodide perovskite materials feature promising photovoltaic performances and superior thermal stabilities. However, conversion of the perovskite α-FAPbI3 phase to the thermodynamically stable yet photovoltaically inactive δ-FAPbI3 phase compromises the photovoltaic performance. A strategy is presented to address this challenge by using low-dimensional hybrid perovskite materials comprising guaninium (G) organic spacer layers that act as stabilizers of the three-dimensional α-FAPbI3 phase. The underlying mode of interaction at the atomic level is unraveled by means of solid-state nuclear magnetic resonance spectroscopy, X-ray crystallography, transmission electron microscopy, molecular dynamics simulations, and DFT calculations. Low-dimensional-phase-containing hybrid FAPbI3 perovskite solar cells are obtained with improved performance and enhanced long-term stability.
- Language
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- English
- Open access status
- green
- Identifiers
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- DOI 10.1002/anie.201912051
- PMID 31846190
- Persistent URL
- https://sonar.ch/global/documents/163353
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