Micrometer-Resolution Fluorescence and Lifetime Mappings of CsPbBr 3 Nanocrystal Films Coupled with a TiO 2 Grating
Enhancing light emission from perovskite nanocrystal (NC) films is essential in light-emitting devices, as their conventional stacks often restrict the escape of emitted light. This work addresses this challenge by employing a TiO grating to enhance light extraction and shape the emission of CsPbBr...
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| Veröffentlicht in: | The journal of physical chemistry letters 2024-11, Vol.15 (45), p.11291-11299 |
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| creator | Nguyen, Viet Anh Wu, Ye Ha Do, Thi Thu Dieu Nguyen, Linh Thi Sergeev, Aleksandr A Zhu, Ding Valuckas, Vytautas Pham, Duong Son Bui, Hai Xuan Hoang, Duy Mai Tung, Bui Son Khuyen, Bui Xuan Nguyen, Thanh Binh Nguyen, Hai Son Lam, Vu Dinh Rogach, Andrey L Ha, Son Tung Le-Van, Quynh |
| description | Enhancing light emission from perovskite nanocrystal (NC) films is essential in light-emitting devices, as their conventional stacks often restrict the escape of emitted light. This work addresses this challenge by employing a TiO
grating to enhance light extraction and shape the emission of CsPbBr
nanocrystal films. Angle-resolved photoluminescence (PL) demonstrated a 10-fold increase in emission intensity by coupling the Bloch resonances of the grating with the spontaneous emission of the perovskite NCs. Fluorescence lifetime imaging microscopy (FLIM) provided micrometer-resolution mapping of both PL intensity and lifetime across a large area, revealing a decrease in PL lifetime from 8.2 ns for NC films on glass to 6.1 ns on the TiO
grating. Back focal plane (BFP) spectroscopy confirmed how the Bloch resonances transformed the unpolarized, spatially incoherent emission of NCs into polarized and directed light. These findings provide further insights into the interactions between dielectric nanostructures and perovskite NC films, offering possible pathways for designing better performing perovskite optoelectronic devices. |
| doi_str_mv | 10.1021/acs.jpclett.4c02546 |
| format | Article |
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grating to enhance light extraction and shape the emission of CsPbBr
nanocrystal films. Angle-resolved photoluminescence (PL) demonstrated a 10-fold increase in emission intensity by coupling the Bloch resonances of the grating with the spontaneous emission of the perovskite NCs. Fluorescence lifetime imaging microscopy (FLIM) provided micrometer-resolution mapping of both PL intensity and lifetime across a large area, revealing a decrease in PL lifetime from 8.2 ns for NC films on glass to 6.1 ns on the TiO
grating. Back focal plane (BFP) spectroscopy confirmed how the Bloch resonances transformed the unpolarized, spatially incoherent emission of NCs into polarized and directed light. These findings provide further insights into the interactions between dielectric nanostructures and perovskite NC films, offering possible pathways for designing better performing perovskite optoelectronic devices.</description><identifier>ISSN: 1948-7185</identifier><identifier>EISSN: 1948-7185</identifier><identifier>DOI: 10.1021/acs.jpclett.4c02546</identifier><identifier>PMID: 39495752</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Physics</subject><ispartof>The journal of physical chemistry letters, 2024-11, Vol.15 (45), p.11291-11299</ispartof><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c1012-be975ef72607f6acdf0a1c9cabb9fa8267020ff55713385b9eedb8d9b4a0206d3</cites><orcidid>0000-0002-5475-8365 ; 0009-0000-1636-2020 ; 0000-0002-1638-2272 ; 0000-0002-9623-7437 ; 0000-0002-8263-8141</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,777,781,882,2752,27905,27906</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/39495752$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-04838751$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Nguyen, Viet Anh</creatorcontrib><creatorcontrib>Wu, Ye</creatorcontrib><creatorcontrib>Ha Do, Thi Thu</creatorcontrib><creatorcontrib>Dieu Nguyen, Linh Thi</creatorcontrib><creatorcontrib>Sergeev, Aleksandr A</creatorcontrib><creatorcontrib>Zhu, Ding</creatorcontrib><creatorcontrib>Valuckas, Vytautas</creatorcontrib><creatorcontrib>Pham, Duong</creatorcontrib><creatorcontrib>Son Bui, Hai Xuan</creatorcontrib><creatorcontrib>Hoang, Duy Mai</creatorcontrib><creatorcontrib>Tung, Bui Son</creatorcontrib><creatorcontrib>Khuyen, Bui Xuan</creatorcontrib><creatorcontrib>Nguyen, Thanh Binh</creatorcontrib><creatorcontrib>Nguyen, Hai Son</creatorcontrib><creatorcontrib>Lam, Vu Dinh</creatorcontrib><creatorcontrib>Rogach, Andrey L</creatorcontrib><creatorcontrib>Ha, Son Tung</creatorcontrib><creatorcontrib>Le-Van, Quynh</creatorcontrib><title>Micrometer-Resolution Fluorescence and Lifetime Mappings of CsPbBr 3 Nanocrystal Films Coupled with a TiO 2 Grating</title><title>The journal of physical chemistry letters</title><addtitle>J Phys Chem Lett</addtitle><description>Enhancing light emission from perovskite nanocrystal (NC) films is essential in light-emitting devices, as their conventional stacks often restrict the escape of emitted light. This work addresses this challenge by employing a TiO
grating to enhance light extraction and shape the emission of CsPbBr
nanocrystal films. Angle-resolved photoluminescence (PL) demonstrated a 10-fold increase in emission intensity by coupling the Bloch resonances of the grating with the spontaneous emission of the perovskite NCs. Fluorescence lifetime imaging microscopy (FLIM) provided micrometer-resolution mapping of both PL intensity and lifetime across a large area, revealing a decrease in PL lifetime from 8.2 ns for NC films on glass to 6.1 ns on the TiO
grating. Back focal plane (BFP) spectroscopy confirmed how the Bloch resonances transformed the unpolarized, spatially incoherent emission of NCs into polarized and directed light. These findings provide further insights into the interactions between dielectric nanostructures and perovskite NC films, offering possible pathways for designing better performing perovskite optoelectronic devices.</description><subject>Physics</subject><issn>1948-7185</issn><issn>1948-7185</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><recordid>eNpNkMtOwzAQRS0EoqXwBUjIWxYpdhLH8bJEtEVKKUJlHTnOmLrKS3YC6t-TqqViNaO598ziIHRPyZQSnz5J5aa7VpXQddNQEZ-F0QUaUxHGHqcxu_y3j9CNcztCIkFifo1GgQgF48wfI7cyyjYVdGC9D3BN2XemqfG87BsLTkGtAMu6wKnR0JkK8Eq2ram_HG40Ttx7_mxxgN9k3Si7d50s8dyUlcNJ07clFPjHdFss8cassY8XVnYDe4uutCwd3J3mBH3OXzbJ0kvXi9dklnqKEup7OQjOQHM_IlxHUhWaSKqEknkutIz9iBOfaM0Yp0EQs1wAFHlciDyUQxAVwQQ9Hv9uZZm11lTS7rNGmmw5S7PDjYRxEHNGv-nQDY7dwYZzFvQZoCQ76M4G3dlJd3bSPVAPR6rt8wqKM_PnN_gF3CF_Qw</recordid><startdate>20241114</startdate><enddate>20241114</enddate><creator>Nguyen, Viet Anh</creator><creator>Wu, Ye</creator><creator>Ha Do, Thi Thu</creator><creator>Dieu Nguyen, Linh Thi</creator><creator>Sergeev, Aleksandr A</creator><creator>Zhu, Ding</creator><creator>Valuckas, Vytautas</creator><creator>Pham, Duong</creator><creator>Son Bui, Hai Xuan</creator><creator>Hoang, Duy Mai</creator><creator>Tung, Bui Son</creator><creator>Khuyen, Bui Xuan</creator><creator>Nguyen, Thanh Binh</creator><creator>Nguyen, Hai Son</creator><creator>Lam, Vu Dinh</creator><creator>Rogach, Andrey L</creator><creator>Ha, Son Tung</creator><creator>Le-Van, Quynh</creator><general>American Chemical Society</general><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>1XC</scope><scope>VOOES</scope><orcidid>https://orcid.org/0000-0002-5475-8365</orcidid><orcidid>https://orcid.org/0009-0000-1636-2020</orcidid><orcidid>https://orcid.org/0000-0002-1638-2272</orcidid><orcidid>https://orcid.org/0000-0002-9623-7437</orcidid><orcidid>https://orcid.org/0000-0002-8263-8141</orcidid></search><sort><creationdate>20241114</creationdate><title>Micrometer-Resolution Fluorescence and Lifetime Mappings of CsPbBr 3 Nanocrystal Films Coupled with a TiO 2 Grating</title><author>Nguyen, Viet Anh ; 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grating to enhance light extraction and shape the emission of CsPbBr
nanocrystal films. Angle-resolved photoluminescence (PL) demonstrated a 10-fold increase in emission intensity by coupling the Bloch resonances of the grating with the spontaneous emission of the perovskite NCs. Fluorescence lifetime imaging microscopy (FLIM) provided micrometer-resolution mapping of both PL intensity and lifetime across a large area, revealing a decrease in PL lifetime from 8.2 ns for NC films on glass to 6.1 ns on the TiO
grating. Back focal plane (BFP) spectroscopy confirmed how the Bloch resonances transformed the unpolarized, spatially incoherent emission of NCs into polarized and directed light. These findings provide further insights into the interactions between dielectric nanostructures and perovskite NC films, offering possible pathways for designing better performing perovskite optoelectronic devices.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>39495752</pmid><doi>10.1021/acs.jpclett.4c02546</doi><tpages>9</tpages><orcidid>https://orcid.org/0000-0002-5475-8365</orcidid><orcidid>https://orcid.org/0009-0000-1636-2020</orcidid><orcidid>https://orcid.org/0000-0002-1638-2272</orcidid><orcidid>https://orcid.org/0000-0002-9623-7437</orcidid><orcidid>https://orcid.org/0000-0002-8263-8141</orcidid><oa>free_for_read</oa></addata></record> |
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| title | Micrometer-Resolution Fluorescence and Lifetime Mappings of CsPbBr 3 Nanocrystal Films Coupled with a TiO 2 Grating |
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