2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells
Abstract The incorporation of large organic ammonium ions renders the crystallization dynamics and layer formation process of halide perovskites complex, difficult to control, and leads to problems of suppressed charge transport with the formation of tiny‐sized grains. In this paper, the use of meth...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2024-02-01
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| Series: | Advanced Materials Interfaces |
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| Online Access: | https://doi.org/10.1002/admi.202300773 |
| _version_ | 1797296311284793344 |
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| author | Min Liu Daming Zheng Tao Zhu Karol Vegso Peter Siffalovic Thierry Pauporté |
| author_facet | Min Liu Daming Zheng Tao Zhu Karol Vegso Peter Siffalovic Thierry Pauporté |
| author_sort | Min Liu |
| collection | DOAJ |
| description | Abstract The incorporation of large organic ammonium ions renders the crystallization dynamics and layer formation process of halide perovskites complex, difficult to control, and leads to problems of suppressed charge transport with the formation of tiny‐sized grains. In this paper, the use of methylammonium chloride (MACl) and an excess of PbI2 is introduced as a co‐additives in the precursor solution for the control of phenylmethylammonium or benzylammonium (PMA+ spacer) and formamidinium (FA+)‐based quasi‐2D PMA2FAn−1PbnI3n+1 (n = 5) perovskite layers formation. By this method, the morphology of the layer, the inner phase distribution, and the charge transport properties are improved. By employing glow discharge‐optical emission spectroscopy (GD‐OES) and other techniques, it is revealed that the quasi‐2D perovskites prepared in the presence of co‐additives exhibit uniform removal dynamics of the solvent across the film. Furthermore, the grain growth mode, upon thermal annealing, is lateral. It results in large, monolithic grains with low‐trap state density and excellent substrate coverage. Particularly, co‐additives improve the cations dispersion upon the crystallization process, thus suppressing the low‐n phase formed through the aggregation of spacer cations and accelerating the formation of the high‐n phase. |
| first_indexed | 2024-03-07T22:01:40Z |
| format | Article |
| id | doaj.art-f6a5278da441421f838fee4f35fab201 |
| institution | Directory Open Access Journal |
| issn | 2196-7350 |
| language | English |
| last_indexed | 2024-03-07T22:01:40Z |
| publishDate | 2024-02-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj.art-f6a5278da441421f838fee4f35fab2012024-02-24T04:11:01ZengWiley-VCHAdvanced Materials Interfaces2196-73502024-02-01116n/an/a10.1002/admi.2023007732D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar CellsMin Liu0Daming Zheng1Tao Zhu2Karol Vegso3Peter Siffalovic4Thierry Pauporté5Chimie ParisTech PSL Research University CNRS Institut de Recherche de Chimie Paris (IRCP) UMR8247, 11 rue P. et M. Curie Paris F‐75005 FranceChimie ParisTech PSL Research University CNRS Institut de Recherche de Chimie Paris (IRCP) UMR8247, 11 rue P. et M. Curie Paris F‐75005 FranceChimie ParisTech PSL Research University CNRS Institut de Recherche de Chimie Paris (IRCP) UMR8247, 11 rue P. et M. Curie Paris F‐75005 FranceInstitute of Physics Slovak Academy of Sciences Dubravska cesta 9 Bratislava 84511 SlovakiaInstitute of Physics Slovak Academy of Sciences Dubravska cesta 9 Bratislava 84511 SlovakiaChimie ParisTech PSL Research University CNRS Institut de Recherche de Chimie Paris (IRCP) UMR8247, 11 rue P. et M. Curie Paris F‐75005 FranceAbstract The incorporation of large organic ammonium ions renders the crystallization dynamics and layer formation process of halide perovskites complex, difficult to control, and leads to problems of suppressed charge transport with the formation of tiny‐sized grains. In this paper, the use of methylammonium chloride (MACl) and an excess of PbI2 is introduced as a co‐additives in the precursor solution for the control of phenylmethylammonium or benzylammonium (PMA+ spacer) and formamidinium (FA+)‐based quasi‐2D PMA2FAn−1PbnI3n+1 (n = 5) perovskite layers formation. By this method, the morphology of the layer, the inner phase distribution, and the charge transport properties are improved. By employing glow discharge‐optical emission spectroscopy (GD‐OES) and other techniques, it is revealed that the quasi‐2D perovskites prepared in the presence of co‐additives exhibit uniform removal dynamics of the solvent across the film. Furthermore, the grain growth mode, upon thermal annealing, is lateral. It results in large, monolithic grains with low‐trap state density and excellent substrate coverage. Particularly, co‐additives improve the cations dispersion upon the crystallization process, thus suppressing the low‐n phase formed through the aggregation of spacer cations and accelerating the formation of the high‐n phase.https://doi.org/10.1002/admi.202300773additive compoundscrystallization mechanismphase distributionRudlesden–Popper 2D perovskitesolar cells |
| spellingShingle | Min Liu Daming Zheng Tao Zhu Karol Vegso Peter Siffalovic Thierry Pauporté 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells Advanced Materials Interfaces additive compounds crystallization mechanism phase distribution Rudlesden–Popper 2D perovskite solar cells |
| title | 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells |
| title_full | 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells |
| title_fullStr | 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells |
| title_full_unstemmed | 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells |
| title_short | 2D Halide Perovskite Phase Formation Dynamics and Their Regulation by Co‐Additives for Efficient Solar Cells |
| title_sort | 2d halide perovskite phase formation dynamics and their regulation by co additives for efficient solar cells |
| topic | additive compounds crystallization mechanism phase distribution Rudlesden–Popper 2D perovskite solar cells |
| url | https://doi.org/10.1002/admi.202300773 |
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