Compositional and Interfacial Engineering Yield High-Performance and Stable p-i-n Perovskite Solar Cells and Mini-Modules
(2021) In ACS applied materials & interfaces 13(11). p.13022-13033- Abstract
Through the optimization of the perovskite precursor composition and interfaces to selective contacts, we achieved a p-i-n-type perovskite solar cell (PSC) with a 22.3% power conversion efficiency (PCE). This is a new performance record for a PSC with an absorber bandgap of 1.63 eV. We demonstrate that the high device performance originates from a synergy between (1) an improved perovskite absorber quality when introducing formamidinium chloride (FACl) as an additive in the "triple cation" Cs0.05FA0.79MA0.16PbBr0.51I2.49 (Cs-MAFA) perovskite precursor ink, (2) an increased open-circuit voltage, VOC, due to reduced recombination losses when using a lithium fluoride (LiF) interfacial buffer layer, and (3) high-quality hole-selective... (More)
Through the optimization of the perovskite precursor composition and interfaces to selective contacts, we achieved a p-i-n-type perovskite solar cell (PSC) with a 22.3% power conversion efficiency (PCE). This is a new performance record for a PSC with an absorber bandgap of 1.63 eV. We demonstrate that the high device performance originates from a synergy between (1) an improved perovskite absorber quality when introducing formamidinium chloride (FACl) as an additive in the "triple cation" Cs0.05FA0.79MA0.16PbBr0.51I2.49 (Cs-MAFA) perovskite precursor ink, (2) an increased open-circuit voltage, VOC, due to reduced recombination losses when using a lithium fluoride (LiF) interfacial buffer layer, and (3) high-quality hole-selective contacts with a self-assembled monolayer (SAM) of [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) on ITO electrodes. While all devices exhibit a high performance after fabrication, as determined from current-density voltage, J-V, measurements, substantial differences in device performance become apparent when considering longer-term stability data. A reduced long-term stability of devices with the introduction of a LiF interlayer is compensated for by using FACl as an additive in the metal-halide perovskite thin-film deposition. Optimized devices maintained about 80% of the initial average PCE during maximum power point (MPP) tracking for >700 h. We scaled the optimized device architecture to larger areas and achieved fully laser patterned series-interconnected mini-modules with a PCE of 19.4% for a 2.2 cm2 active area. A robust device architecture and reproducible deposition methods are fundamental for high performance and stable large-area single junction and tandem modules based on PSCs.
(Less)
- author
- organization
- publishing date
- 2021
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- FACl additive, interface modification, laser-interconnection, module, p-i-n solar cell, self-assembled monolayer, triple cation perovskite
- in
- ACS applied materials & interfaces
- volume
- 13
- issue
- 11
- pages
- 12 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85103606514
- pmid:33721995
- ISSN
- 1944-8244
- DOI
- 10.1021/acsami.0c17893
- language
- English
- LU publication?
- yes
- id
- 5f86dec6-4235-4aea-ab7c-4ab5a1d2d71e
- date added to LUP
- 2021-04-12 14:32:48
- date last changed
- 2025-03-23 13:38:04
@article{5f86dec6-4235-4aea-ab7c-4ab5a1d2d71e,
abstract = {{<p>Through the optimization of the perovskite precursor composition and interfaces to selective contacts, we achieved a p-i-n-type perovskite solar cell (PSC) with a 22.3% power conversion efficiency (PCE). This is a new performance record for a PSC with an absorber bandgap of 1.63 eV. We demonstrate that the high device performance originates from a synergy between (1) an improved perovskite absorber quality when introducing formamidinium chloride (FACl) as an additive in the "triple cation" Cs0.05FA0.79MA0.16PbBr0.51I2.49 (Cs-MAFA) perovskite precursor ink, (2) an increased open-circuit voltage, VOC, due to reduced recombination losses when using a lithium fluoride (LiF) interfacial buffer layer, and (3) high-quality hole-selective contacts with a self-assembled monolayer (SAM) of [2-(9H-carbazol-9-yl)ethyl]phosphonic acid (2PACz) on ITO electrodes. While all devices exhibit a high performance after fabrication, as determined from current-density voltage, J-V, measurements, substantial differences in device performance become apparent when considering longer-term stability data. A reduced long-term stability of devices with the introduction of a LiF interlayer is compensated for by using FACl as an additive in the metal-halide perovskite thin-film deposition. Optimized devices maintained about 80% of the initial average PCE during maximum power point (MPP) tracking for >700 h. We scaled the optimized device architecture to larger areas and achieved fully laser patterned series-interconnected mini-modules with a PCE of 19.4% for a 2.2 cm2 active area. A robust device architecture and reproducible deposition methods are fundamental for high performance and stable large-area single junction and tandem modules based on PSCs.</p>}},
author = {{Dagar, Janardan and Fenske, Markus and Al-Ashouri, Amran and Schultz, Christof and Li, Bor and Köbler, Hans and Munir, Rahim and Parmasivam, Gopinath and Li, Jinzhao and Levine, Igal and Merdasa, Aboma and Kegelmann, Lukas and Näsström, Hampus and Marquez, Jose A. and Unold, Thomas and Többens, Daniel M. and Schlatmann, Rutger and Stegemann, Bert and Abate, Antonio and Albrecht, Steve and Unger, Eva}},
issn = {{1944-8244}},
keywords = {{FACl additive; interface modification; laser-interconnection; module; p-i-n solar cell; self-assembled monolayer; triple cation perovskite}},
language = {{eng}},
number = {{11}},
pages = {{13022--13033}},
publisher = {{The American Chemical Society (ACS)}},
series = {{ACS applied materials & interfaces}},
title = {{Compositional and Interfacial Engineering Yield High-Performance and Stable p-i-n Perovskite Solar Cells and Mini-Modules}},
url = {{http://dx.doi.org/10.1021/acsami.0c17893}},
doi = {{10.1021/acsami.0c17893}},
volume = {{13}},
year = {{2021}},
}