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Anisotropic exciton–polaritons in 2D single-crystalline PEA 2 PbBr 4 perovskites at room temperature
Abstract Two-dimensional (2D) single-crystalline perovskites are a suitable material for investigating the strong exciton–photon interaction due to the large exciton binding energy. Here, we grow high-quality 2D single-crystalline PEA 2 PbBr 4 thin film in situ in between a pair of distributed Bragg...
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Published in: | Journal of physics. D, Applied physics Applied physics, 2023-02, Vol.56 (10), p.105301 |
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container_issue | 10 |
container_start_page | 105301 |
container_title | Journal of physics. D, Applied physics |
container_volume | 56 |
creator | Chu, Zihao Chen, Huanqing Mao, Xinrui Li, Yanping Xu, Wanjin Ran, Guangzhao |
description | Abstract
Two-dimensional (2D) single-crystalline perovskites are a suitable material for investigating the strong exciton–photon interaction due to the large exciton binding energy. Here, we grow high-quality 2D single-crystalline PEA
2
PbBr
4
thin film
in situ
in between a pair of distributed Bragg reflectors and construct an anisotropic exciton–polariton microcavity. Clear evidence for strong exciton–photon coupling is observed and represented by a large coupling strength of 211.8 meV. The observed transverse electric–transverse magnetic splitting at the point where the in-plane wave vector is zero indicates crystal birefringence. The effective refractive indices for these two orthogonal polarization directions are derived to have a large difference, corresponding to a material index difference of 0.28, and then an in-plane refractive index ellipse is built for the material. This work shows that the 2D anisotropic perovskite microcavity can not only behave as a platform for characterizing the anisotropic properties of a material but also as a promising room-temperature polaritonic device. |
doi_str_mv | 10.1088/1361-6463/acb783 |
format | article |
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Two-dimensional (2D) single-crystalline perovskites are a suitable material for investigating the strong exciton–photon interaction due to the large exciton binding energy. Here, we grow high-quality 2D single-crystalline PEA
2
PbBr
4
thin film
in situ
in between a pair of distributed Bragg reflectors and construct an anisotropic exciton–polariton microcavity. Clear evidence for strong exciton–photon coupling is observed and represented by a large coupling strength of 211.8 meV. The observed transverse electric–transverse magnetic splitting at the point where the in-plane wave vector is zero indicates crystal birefringence. The effective refractive indices for these two orthogonal polarization directions are derived to have a large difference, corresponding to a material index difference of 0.28, and then an in-plane refractive index ellipse is built for the material. This work shows that the 2D anisotropic perovskite microcavity can not only behave as a platform for characterizing the anisotropic properties of a material but also as a promising room-temperature polaritonic device.</description><identifier>ISSN: 0022-3727</identifier><identifier>EISSN: 1361-6463</identifier><identifier>DOI: 10.1088/1361-6463/acb783</identifier><language>eng</language><ispartof>Journal of physics. D, Applied physics, 2023-02, Vol.56 (10), p.105301</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c883-7c96c2e93ca5281c75538b23d5c12f9089d033775092038b1621e8f48f24ff843</citedby><cites>FETCH-LOGICAL-c883-7c96c2e93ca5281c75538b23d5c12f9089d033775092038b1621e8f48f24ff843</cites><orcidid>0000-0003-4054-5614 ; 0000-0002-8241-8165 ; 0000-0001-7521-9179</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,786,790,27957,27958</link.rule.ids></links><search><creatorcontrib>Chu, Zihao</creatorcontrib><creatorcontrib>Chen, Huanqing</creatorcontrib><creatorcontrib>Mao, Xinrui</creatorcontrib><creatorcontrib>Li, Yanping</creatorcontrib><creatorcontrib>Xu, Wanjin</creatorcontrib><creatorcontrib>Ran, Guangzhao</creatorcontrib><title>Anisotropic exciton–polaritons in 2D single-crystalline PEA 2 PbBr 4 perovskites at room temperature</title><title>Journal of physics. D, Applied physics</title><description>Abstract
Two-dimensional (2D) single-crystalline perovskites are a suitable material for investigating the strong exciton–photon interaction due to the large exciton binding energy. Here, we grow high-quality 2D single-crystalline PEA
2
PbBr
4
thin film
in situ
in between a pair of distributed Bragg reflectors and construct an anisotropic exciton–polariton microcavity. Clear evidence for strong exciton–photon coupling is observed and represented by a large coupling strength of 211.8 meV. The observed transverse electric–transverse magnetic splitting at the point where the in-plane wave vector is zero indicates crystal birefringence. The effective refractive indices for these two orthogonal polarization directions are derived to have a large difference, corresponding to a material index difference of 0.28, and then an in-plane refractive index ellipse is built for the material. This work shows that the 2D anisotropic perovskite microcavity can not only behave as a platform for characterizing the anisotropic properties of a material but also as a promising room-temperature polaritonic device.</description><issn>0022-3727</issn><issn>1361-6463</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNo9kE1OwzAYRC0EEqWwZ-kLmH62E9tZhlJ-pEp00X3kuDYyJHFkG0R33IEbchIaFbGa0RtpFg-hawo3FJRaUC4oEYXgC21aqfgJmv2jUzQDYIxwyeQ5ukjpFQBKoegMuXrwKeQYRm-w_TQ-h-Hn63sMnY5TT9gPmN3h5IeXzhIT9ynrrvODxZtVjRnetLcRF3i0MXykN59twjrjGEKPs-0PWOf3aC_RmdNdsld_OUfb-9V2-UjWzw9Py3pNjFKcSFMJw2zFjS6ZokaWJVct47vSUOYqUNUOOJeyhIrBYaGCUatcoRwrnFMFnyM43poYUorWNWP0vY77hkIzaWomJ83kpDlq4r8Ntlwb</recordid><startdate>20230216</startdate><enddate>20230216</enddate><creator>Chu, Zihao</creator><creator>Chen, Huanqing</creator><creator>Mao, Xinrui</creator><creator>Li, Yanping</creator><creator>Xu, Wanjin</creator><creator>Ran, Guangzhao</creator><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0003-4054-5614</orcidid><orcidid>https://orcid.org/0000-0002-8241-8165</orcidid><orcidid>https://orcid.org/0000-0001-7521-9179</orcidid></search><sort><creationdate>20230216</creationdate><title>Anisotropic exciton–polaritons in 2D single-crystalline PEA 2 PbBr 4 perovskites at room temperature</title><author>Chu, Zihao ; Chen, Huanqing ; Mao, Xinrui ; Li, Yanping ; Xu, Wanjin ; Ran, Guangzhao</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c883-7c96c2e93ca5281c75538b23d5c12f9089d033775092038b1621e8f48f24ff843</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chu, Zihao</creatorcontrib><creatorcontrib>Chen, Huanqing</creatorcontrib><creatorcontrib>Mao, Xinrui</creatorcontrib><creatorcontrib>Li, Yanping</creatorcontrib><creatorcontrib>Xu, Wanjin</creatorcontrib><creatorcontrib>Ran, Guangzhao</creatorcontrib><collection>CrossRef</collection><jtitle>Journal of physics. D, Applied physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chu, Zihao</au><au>Chen, Huanqing</au><au>Mao, Xinrui</au><au>Li, Yanping</au><au>Xu, Wanjin</au><au>Ran, Guangzhao</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Anisotropic exciton–polaritons in 2D single-crystalline PEA 2 PbBr 4 perovskites at room temperature</atitle><jtitle>Journal of physics. D, Applied physics</jtitle><date>2023-02-16</date><risdate>2023</risdate><volume>56</volume><issue>10</issue><spage>105301</spage><pages>105301-</pages><issn>0022-3727</issn><eissn>1361-6463</eissn><abstract>Abstract
Two-dimensional (2D) single-crystalline perovskites are a suitable material for investigating the strong exciton–photon interaction due to the large exciton binding energy. Here, we grow high-quality 2D single-crystalline PEA
2
PbBr
4
thin film
in situ
in between a pair of distributed Bragg reflectors and construct an anisotropic exciton–polariton microcavity. Clear evidence for strong exciton–photon coupling is observed and represented by a large coupling strength of 211.8 meV. The observed transverse electric–transverse magnetic splitting at the point where the in-plane wave vector is zero indicates crystal birefringence. The effective refractive indices for these two orthogonal polarization directions are derived to have a large difference, corresponding to a material index difference of 0.28, and then an in-plane refractive index ellipse is built for the material. This work shows that the 2D anisotropic perovskite microcavity can not only behave as a platform for characterizing the anisotropic properties of a material but also as a promising room-temperature polaritonic device.</abstract><doi>10.1088/1361-6463/acb783</doi><orcidid>https://orcid.org/0000-0003-4054-5614</orcidid><orcidid>https://orcid.org/0000-0002-8241-8165</orcidid><orcidid>https://orcid.org/0000-0001-7521-9179</orcidid></addata></record> |
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title | Anisotropic exciton–polaritons in 2D single-crystalline PEA 2 PbBr 4 perovskites at room temperature |
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