Effect of Different Bromine Sources on the Dual Cation Mixed Halide Perovskite Solar Cells

Damian Głowienka; Francesco Di Giacomo; Mehrdad Najafi; Ilker Dogan; Alfredo Mameli; Fallon J.M. Colberts; Jȩdrzej Szmytkowski; Yulia Galagan

doi:10.1021/acsaem.0c00767

Effect of Different Bromine Sources on the Dual Cation Mixed Halide Perovskite Solar Cells

Damian Głowienka (Corresponding author), Francesco Di Giacomo, Mehrdad Najafi, Ilker Dogan, Alfredo Mameli, Fallon J.M. Colberts, Jȩdrzej Szmytkowski, Yulia Galagan (Corresponding author)

Research output: Contribution to journal › Article › Academic › peer-review

10 Citations (Scopus)

Abstract

Recent research has shown that perovskite solar cells with a mixed dual A-cation have much better structural stability without loss of efficiency than single cation devices. Mixed cation perovskites create a lot of questions about the salts being used for the formation of the best-quality layer. Here, we have investigated three sources of bromide in the perovskite absorption layer, using lead bromide (PbBr2), formamidinium bromide (FABr), and cesium bromide (CsBr). The experimental results have shown better performance for FABr and CsBr sources of bromide in comparison to the regularly used PbBr2. This effect has been explained with the complex species present in the not-annealed perovskite films which changes the defect states during the crystallization of the absorber layer. It has been found with numerical simulations that the observed phenomenon directly impacts the rates of the trap-assisted recombination. The results of this study are one more step forward in understanding the physics behind the crystallization process which is crucial in further improvement of the perovskite solar cells.

Original language	English
Pages (from-to)	8285-8294
Number of pages	10
Journal	ACS Applied Energy Materials
Volume	3
Issue number	9
DOIs	https://doi.org/10.1021/acsaem.0c00767
Publication status	Published - 28 Sept 2020

Funding

The work has been supported by Solliance, a partnership of R&D organizations from the Netherlands, Belgium, and Germany working in thin film photovoltaic solar energy. This work is part of the research program CLEARPV, grant M-ERA.NET 2017 CW with project number 732.017.105, which is (partly) financed by the Netherlands Organisation for Scientific Research (NWO). The numerical part has also been supported by National Science Centre, Poland 2018/29/N/ST7/02326. Calculations were carried out at the Academic Computer Centre (CI TASK) in Gdańsk. The authors are grateful for the financial support for this work carried out in the “ALLSUN” project (TEUE117074) from the Dutch Ministry of Economic Affairs, via the Top-consortia Knowledge and Innovation (TKI) Program.

Funders	Funder number
Top consortia for Knowledge and Innovation
Ministerie van Economische Zaken en Klimaat
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Narodowe Centrum Nauki	TEUE117074, 2018/29/N/ST7/02326

Keywords

bromide
bulk recombination
complex species
perovskite
solar cell

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10.1021/acsaem.0c00767

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title = "Effect of Different Bromine Sources on the Dual Cation Mixed Halide Perovskite Solar Cells",

abstract = "Recent research has shown that perovskite solar cells with a mixed dual A-cation have much better structural stability without loss of efficiency than single cation devices. Mixed cation perovskites create a lot of questions about the salts being used for the formation of the best-quality layer. Here, we have investigated three sources of bromide in the perovskite absorption layer, using lead bromide (PbBr2), formamidinium bromide (FABr), and cesium bromide (CsBr). The experimental results have shown better performance for FABr and CsBr sources of bromide in comparison to the regularly used PbBr2. This effect has been explained with the complex species present in the not-annealed perovskite films which changes the defect states during the crystallization of the absorber layer. It has been found with numerical simulations that the observed phenomenon directly impacts the rates of the trap-assisted recombination. The results of this study are one more step forward in understanding the physics behind the crystallization process which is crucial in further improvement of the perovskite solar cells. ",

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author = "Damian G{\l}owienka and {Di Giacomo}, Francesco and Mehrdad Najafi and Ilker Dogan and Alfredo Mameli and Colberts, {Fallon J.M.} and Jȩdrzej Szmytkowski and Yulia Galagan",

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AU - Mameli, Alfredo

AU - Colberts, Fallon J.M.

AU - Szmytkowski, Jȩdrzej

AU - Galagan, Yulia

PY - 2020/9/28

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Effect of Different Bromine Sources on the Dual Cation Mixed Halide Perovskite Solar Cells

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