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Efficient Wide-Bandgap Mixed-Cation and Mixed-Halide Perovskite Solar Cells by Vacuum Deposition.
| Content Provider | Europe PMC |
|---|---|
| Author | Gil-Escrig, Lidón Dreessen, Chris Palazon, Francisco Hawash, Zafer Moons, Ellen Albrecht, Steve Sessolo, Michele Bolink, Henk J. |
| Copyright Year | 2021 |
| Abstract | Vacuumdeposition methods are increasingly applied to the preparationof perovskite films and devices, in view of the possibility to preparemultilayer structures at low temperature. Vacuum-deposited, wide-bandgapsolar cells based on mixed-cation and mixed-anion perovskites havebeen scarcely reported, due to the challenges associated with themultiple-source processing of perovskite thin films. In this work,we describe a four-source vacuum deposition process to prepare wide-bandgapperovskites of the type FA1–nCsnPb(I1–xBrx)3 with a tunable bandgapand controlled morphology, using FAI, CsI, PbI2, and PbBr2 as the precursors. The simultaneous sublimation of PbI2 and PbBr2 allows the relative Br/Cs content tobe decoupled and controlled, resulting in homogeneous perovskite filmswith a bandgap in the 1.7–1.8 eV range and no detectable halidesegregation. Solar cells based on 1.75 eV bandgap perovskites showefficiency up to 16.8% and promising stability, maintaining 90% ofthe initial efficiency after 2 weeks of operation. |
| Related Links | https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC8461651&blobtype=pdf |
| Journal | ACS Energy Letters [ACS Energy Lett] |
| Volume Number | 6 |
| DOI | 10.1021/acsenergylett.0c02445 |
| PubMed Central reference number | PMC8461651 |
| Issue Number | 2 |
| PubMed reference number | 34568574 |
| e-ISSN | 23808195 |
| Language | English |
| Publisher | American Chemical Society |
| Publisher Date | 2021-02-03 |
| Access Restriction | Open |
| Rights License | Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). © 2021 American Chemical Society |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Energy Engineering and Power Technology Renewable Energy, Sustainability and the Environment Materials Chemistry Fuel Technology |
