DataVXACS Energy LettersPaper
journal article·2023-05-12Open access

Surface Passivation of FAPbI3-Rich Perovskite with Cesium Iodide Outperforms Bulk Incorporation

Thomas P. Baumeler, Essa A. Alharbi, George Kakavelakis, George C. Fish, Mubarak T. Aldosari, Miqad S. Albishi, Lukas Pfeifer, Brian I. Carlsen, Jun-Ho Yum, Abdullah S. Alharbi, Mounir D. Mensi, Jing Gao, Felix T. Eickemeyer, Kevin Sivula, Jacques-E Moser, Shaik M. Zakeeruddin, Michael Grätzel

ACS Energy Letters· Volume 8· Issue 5
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Source abstract

Abstract

Metal halide perovskites (MHPs) have shown an incredible increase in efficiency, reaching as high as 25.7%, which now competes with traditional photovoltaic technologies. Herein, we excluded CsX and RbX (X = I –, Br –, Cl – ), the most commonly used cations to stabilize α-FAPbI 3, from the bulk of perovskite thin films and applied them on the surface as passivation agents. Extensive device optimization led to a power conversion efficiency (PCE) of 24.1% with a high fill factor (FF) of 82.2% upon passivation with CsI. We investigated in depth the effect of CsI passivation on structural and optoelectronic properties using X-ray diffraction (XRD), angle-resolved X-ray photoelectron spectroscopy (ARXPS), Kelvin probe force microscopy (KPFM), time-resolved photoluminescence (TRPL), photoluminescence quantum yield (PLQY), and electroabsorption spectroscopy (TREAS). Furthermore, passivated devices exhibit enhanced operational stability, with optimized passivation with CsI leading to a retention of ∼90% of the initial PCE under 1 sun illumination with maximum power point tracking for 600 h.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Chalcogenide Semiconductor Thin Films

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, School of Basic Sciences, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

Microelectronics and Semiconductors Institute, King Abdulaziz City for Science and Technology (KACST), Riyadh 11442, Saudi Arabia

Photochemical Dynamics Group, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne 1015, Switzerland

Laboratory of Molecular Engineering of Optoelectronic Nanomaterials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne 1015, Switzerland

Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Valais, CH-1951 Sion, Switzerland

Funding

Schweizerischer Nationalfonds zur F?rderung der Wissenschaftlichen Forschung · Korea Electric Power Corporation · H2020 Marie Sklodowska-Curie Actions · King Abdulaziz City for Science and Technology · NCCR-MUST

References (43)

Show source-provided references
1. 10.1038/nmat406510.1038/nmat4065 ↗
2. 10.1038/nenergy.2016.15210.1038/nenergy.2016.152 ↗
3. 10.1126/science.aam632310.1126/science.aam6323 ↗
4. 10.1038/nphoton.2014.13410.1038/nphoton.2014.134 ↗
5. 10.1021/ja809598r10.1021/ja809598r ↗
6. National Renewable Energy Laboratory of the United States of America (NREL) National Center for Photovoltaics, “Best Research-Cell Effficiencies chart,” can be found under https://www.nrel.gov/pv/assets/pdfs/best-research-cell-efficiencies.20200925.pdf, accessed April 30, 2023.
7. 10.1002/adma.20150500210.1002/adma.201505002 ↗
8. 10.1039/c3ee43822h10.1039/c3ee43822h ↗
9. 10.1021/nl501299210.1021/nl5012992 ↗
10. 10.1039/C6CP00721J10.1039/C6CP00721J ↗
11. 10.1039/C5EE03874J10.1039/C5EE03874J ↗
12. 10.1002/adma.20170107710.1002/adma.201701077 ↗
13. 10.1063/1.173603410.1063/1.1736034 ↗
14. 10.1126/science.aah506510.1126/science.aah5065 ↗
15. 10.1021/jacs.7b0722310.1021/jacs.7b07223 ↗
16. 10.1039/C8CS00656C10.1039/C8CS00656C ↗
17. 10.1038/s41566-019-0398-210.1038/s41566-019-0398-2 ↗
18. 10.1021/acsami.7b0394110.1021/acsami.7b03941 ↗
19. 10.1038/s41578-019-0176-210.1038/s41578-019-0176-2 ↗
20. 10.1126/science.aah555710.1126/science.aah5557 ↗
21. 10.1021/acsenergylett.8b0057610.1021/acsenergylett.8b00576 ↗
22. 10.1126/science.aat358310.1126/science.aat3583 ↗
23. 10.1002/aenm.20180358710.1002/aenm.201803587 ↗
24. 10.1126/science.aba241210.1126/science.aba2412 ↗
25. 10.1002/adma.20190712310.1002/adma.201907123 ↗
26. 10.1038/nature1234010.1038/nature12340 ↗
27. 10.1038/s41586-021-03406-510.1038/s41586-021-03406-5 ↗
28. 10.1021/acs.chemmater.0c0418510.1021/acs.chemmater.0c04185 ↗
29. 10.1038/nenergy.2017.10210.1038/nenergy.2017.102 ↗
30. 10.1002/adma.20160454510.1002/adma.201604545 ↗
31. 10.1038/s41560-019-0400-810.1038/s41560-019-0400-8 ↗
32. 10.1039/C8EE01101J10.1039/C8EE01101J ↗
33. 10.1126/sciadv.aaw254310.1126/sciadv.aaw2543 ↗
34. 10.1016/j.joule.2019.04.00510.1016/j.joule.2019.04.005 ↗
35. 10.1016/j.mtener.2018.03.00610.1016/j.mtener.2018.03.006 ↗
36. 10.1038/s41467-019-10985-510.1038/s41467-019-10985-5 ↗
37. 10.1038/ncomms1230510.1038/ncomms12305 ↗
38. 10.1038/s41586-019-1357-210.1038/s41586-019-1357-2 ↗
39. 10.1002/aenm.20160076710.1002/aenm.201600767 ↗
40. 10.1021/acsenergylett.1c0175410.1021/acsenergylett.1c01754 ↗
41. 10.1038/s41578-019-0151-y10.1038/s41578-019-0151-y ↗
42. 10.1021/acs.jpcc.6b0802210.1021/acs.jpcc.6b08022 ↗
43. 10.1002/adma.1997009030810.1002/adma.19970090308 ↗