Chloride-Based Additive Engineering for Efficient and Stable Wide-Bandgap Perovskite Solar Cells
(2023) In Advanced Materials 35(30).- Abstract
Metal halide perovskite based tandem solar cells are promising to achieve power conversion efficiency beyond the theoretical limit of their single-junction counterparts. However, overcoming the significant open-circuit voltage deficit present in wide-bandgap perovskite solar cells remains a major hurdle for realizing efficient and stable perovskite tandem cells. Here, a holistic approach to overcoming challenges in 1.8 eV perovskite solar cells is reported by engineering the perovskite crystallization pathway by means of chloride additives. In conjunction with employing a self-assembled monolayer as the hole-transport layer, an open-circuit voltage of 1.25 V and a power conversion efficiency of 17.0% are achieved. The key role of... (More)
Metal halide perovskite based tandem solar cells are promising to achieve power conversion efficiency beyond the theoretical limit of their single-junction counterparts. However, overcoming the significant open-circuit voltage deficit present in wide-bandgap perovskite solar cells remains a major hurdle for realizing efficient and stable perovskite tandem cells. Here, a holistic approach to overcoming challenges in 1.8 eV perovskite solar cells is reported by engineering the perovskite crystallization pathway by means of chloride additives. In conjunction with employing a self-assembled monolayer as the hole-transport layer, an open-circuit voltage of 1.25 V and a power conversion efficiency of 17.0% are achieved. The key role of methylammonium chloride addition is elucidated in facilitating the growth of a chloride-rich intermediate phase that directs crystallization of the desired cubic perovskite phase and induces more effective halide homogenization. The as-formed 1.8 eV perovskite demonstrates suppressed halide segregation and improved optoelectronic properties.
(Less)
- author
- organization
- publishing date
- 2023-07-27
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- additive engineering, crystallization mechanism, halide homogenization, perovskite solar cells, suppressed halide segregation
- in
- Advanced Materials
- volume
- 35
- issue
- 30
- article number
- 2211742
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:37191054
- scopus:85161254517
- ISSN
- 0935-9648
- DOI
- 10.1002/adma.202211742
- language
- English
- LU publication?
- yes
- id
- 5d86730f-7bd6-4a5a-96c4-f4d875e64498
- date added to LUP
- 2023-08-30 14:11:34
- date last changed
- 2024-04-20 03:16:37
@article{5d86730f-7bd6-4a5a-96c4-f4d875e64498,
abstract = {{<p>Metal halide perovskite based tandem solar cells are promising to achieve power conversion efficiency beyond the theoretical limit of their single-junction counterparts. However, overcoming the significant open-circuit voltage deficit present in wide-bandgap perovskite solar cells remains a major hurdle for realizing efficient and stable perovskite tandem cells. Here, a holistic approach to overcoming challenges in 1.8 eV perovskite solar cells is reported by engineering the perovskite crystallization pathway by means of chloride additives. In conjunction with employing a self-assembled monolayer as the hole-transport layer, an open-circuit voltage of 1.25 V and a power conversion efficiency of 17.0% are achieved. The key role of methylammonium chloride addition is elucidated in facilitating the growth of a chloride-rich intermediate phase that directs crystallization of the desired cubic perovskite phase and induces more effective halide homogenization. The as-formed 1.8 eV perovskite demonstrates suppressed halide segregation and improved optoelectronic properties.</p>}},
author = {{Shen, Xinyi and Gallant, Benjamin M. and Holzhey, Philippe and Smith, Joel A. and Elmestekawy, Karim A. and Yuan, Zhongcheng and Rathnayake, P. V.G.M. and Bernardi, Stefano and Dasgupta, Akash and Kasparavicius, Ernestas and Malinauskas, Tadas and Caprioglio, Pietro and Shargaieva, Oleksandra and Lin, Yen Hung and McCarthy, Melissa M. and Unger, Eva and Getautis, Vytautas and Widmer-Cooper, Asaph and Herz, Laura M. and Snaith, Henry J.}},
issn = {{0935-9648}},
keywords = {{additive engineering; crystallization mechanism; halide homogenization; perovskite solar cells; suppressed halide segregation}},
language = {{eng}},
month = {{07}},
number = {{30}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Advanced Materials}},
title = {{Chloride-Based Additive Engineering for Efficient and Stable Wide-Bandgap Perovskite Solar Cells}},
url = {{http://dx.doi.org/10.1002/adma.202211742}},
doi = {{10.1002/adma.202211742}},
volume = {{35}},
year = {{2023}},
}