Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films
In this work, we studied, at low temperature, the coherent evolution of the localized electron and hole spins in a polycrystalline film of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPI) by using a picosecond-photo-induced Faraday rotation technique in an obliq...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/9/1399 |
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| author | Guadalupe Garcia-Arellano Gaëlle Trippé-Allard Thomas Campos Frédérick Bernardot Laurent Legrand Damien Garrot Emmanuelle Deleporte Christophe Testelin Maria Chamarro |
| author_facet | Guadalupe Garcia-Arellano Gaëlle Trippé-Allard Thomas Campos Frédérick Bernardot Laurent Legrand Damien Garrot Emmanuelle Deleporte Christophe Testelin Maria Chamarro |
| author_sort | Guadalupe Garcia-Arellano |
| collection | DOAJ |
| description | In this work, we studied, at low temperature, the coherent evolution of the localized electron and hole spins in a polycrystalline film of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPI) by using a picosecond-photo-induced Faraday rotation technique in an oblique magnetic field. We observed an unexpected anisotropy for the electron and hole spin. We determined the electron and hole Landé factors when the magnetic field was applied in the plane of the film and perpendicular to the exciting light, denoted as transverse <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>⊥</mo><mo> </mo></mrow></semantics></math></inline-formula> factors, and when the magnetic field was applied perpendicular to the film and parallel to the exciting light, denoted as parallel <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo> </mo><mo>∥</mo><mo> </mo></mrow></semantics></math></inline-formula> factors. We obtained <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>e</mi><mo>,</mo><mo>⊥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>2.600</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.004</mn></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>e</mi><mo>,</mo><mo>∥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>1.604</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.033</mn></mrow></semantics></math></inline-formula> for the electron and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>h</mi><mo>,</mo><mo>⊥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>0.406</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.002</mn></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>h</mi><mo>,</mo><mo>∥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>0.299</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.007</mn></mrow></semantics></math></inline-formula> for the hole. Possible origins of this anisotropy are discussed herein. |
| first_indexed | 2024-03-10T03:52:27Z |
| format | Article |
| id | doaj.art-27fd1695b93e4e199eaf11b3d87a6db6 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T03:52:27Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-27fd1695b93e4e199eaf11b3d87a6db62023-11-23T08:53:36ZengMDPI AGNanomaterials2079-49912022-04-01129139910.3390/nano12091399Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline FilmsGuadalupe Garcia-Arellano0Gaëlle Trippé-Allard1Thomas Campos2Frédérick Bernardot3Laurent Legrand4Damien Garrot5Emmanuelle Deleporte6Christophe Testelin7Maria Chamarro8Institut des NanoSciences de Paris, CNRS, Sorbonne Université, F-75005 Paris, FranceLuMIn (Laboratoire Lumière, Matière et Interfaces), CentraleSupélec, CNRS, ENS Paris-Saclay, Université Paris-Saclay, F-91190 Gif-sur-Yvette, FranceLuMIn (Laboratoire Lumière, Matière et Interfaces), CentraleSupélec, CNRS, ENS Paris-Saclay, Université Paris-Saclay, F-91190 Gif-sur-Yvette, FranceInstitut des NanoSciences de Paris, CNRS, Sorbonne Université, F-75005 Paris, FranceInstitut des NanoSciences de Paris, CNRS, Sorbonne Université, F-75005 Paris, FranceGEMaC (Groupe d’Etude de la Matière Condensée), CNRS, UVSQ, Université Paris-Saclay, F-78000 Versailles, FranceLuMIn (Laboratoire Lumière, Matière et Interfaces), CentraleSupélec, CNRS, ENS Paris-Saclay, Université Paris-Saclay, F-91190 Gif-sur-Yvette, FranceInstitut des NanoSciences de Paris, CNRS, Sorbonne Université, F-75005 Paris, FranceInstitut des NanoSciences de Paris, CNRS, Sorbonne Université, F-75005 Paris, FranceIn this work, we studied, at low temperature, the coherent evolution of the localized electron and hole spins in a polycrystalline film of CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> (MAPI) by using a picosecond-photo-induced Faraday rotation technique in an oblique magnetic field. We observed an unexpected anisotropy for the electron and hole spin. We determined the electron and hole Landé factors when the magnetic field was applied in the plane of the film and perpendicular to the exciting light, denoted as transverse <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo>⊥</mo><mo> </mo></mrow></semantics></math></inline-formula> factors, and when the magnetic field was applied perpendicular to the film and parallel to the exciting light, denoted as parallel <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mo> </mo><mo>∥</mo><mo> </mo></mrow></semantics></math></inline-formula> factors. We obtained <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>e</mi><mo>,</mo><mo>⊥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>2.600</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.004</mn></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>e</mi><mo>,</mo><mo>∥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>1.604</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.033</mn></mrow></semantics></math></inline-formula> for the electron and <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>h</mi><mo>,</mo><mo>⊥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>0.406</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.002</mn></mrow></semantics></math></inline-formula>, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mrow><mo>|</mo><mrow><msub><mi>g</mi><mrow><mi>h</mi><mo>,</mo><mo>∥</mo></mrow></msub></mrow><mo>|</mo></mrow><mo>=</mo><mn>0.299</mn><mo> </mo><mo>±</mo><mo> </mo><mn>0.007</mn></mrow></semantics></math></inline-formula> for the hole. Possible origins of this anisotropy are discussed herein.https://www.mdpi.com/2079-4991/12/9/1399halide perovskiteCH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>g-factorpolycrystalline filmphoto-induced Faraday rotation |
| spellingShingle | Guadalupe Garcia-Arellano Gaëlle Trippé-Allard Thomas Campos Frédérick Bernardot Laurent Legrand Damien Garrot Emmanuelle Deleporte Christophe Testelin Maria Chamarro Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films Nanomaterials halide perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> g-factor polycrystalline film photo-induced Faraday rotation |
| title | Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films |
| title_full | Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films |
| title_fullStr | Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films |
| title_full_unstemmed | Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films |
| title_short | Unexpected Anisotropy of the Electron and Hole Landé g-Factors in Perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Polycrystalline Films |
| title_sort | unexpected anisotropy of the electron and hole lande g factors in perovskite ch sub 3 sub nh sub 3 sub pbi sub 3 sub polycrystalline films |
| topic | halide perovskite CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> g-factor polycrystalline film photo-induced Faraday rotation |
| url | https://www.mdpi.com/2079-4991/12/9/1399 |
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