Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence
One-photon up-conversion, also called anti-Stokes photoluminescence (ASPL), is the process whereby photoexcited carriers scavenge thermal energy and are promoted into a higher energy excited state before emitting a photon of greater energy than initially absorbed. Here, we examine how ASPL from CsPb...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2019-01-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2018-0196 |
| _version_ | 1819026744781307904 |
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| author | Roman Benjamin J. Sheldon Matthew T. |
| author_facet | Roman Benjamin J. Sheldon Matthew T. |
| author_sort | Roman Benjamin J. |
| collection | DOAJ |
| description | One-photon up-conversion, also called anti-Stokes photoluminescence (ASPL), is the process whereby photoexcited carriers scavenge thermal energy and are promoted into a higher energy excited state before emitting a photon of greater energy than initially absorbed. Here, we examine how ASPL from CsPbBr3 nanoparticles is modified by coupling with plasmonically active gold nanoparticles deposited on a substrate. Two coupling regimes are examined using confocal fluorescence microscopy: three to four Au nanoparticles per diffraction limited region and monolayer Au nanoparticle coverage of the substrate. In both regimes, CsPbBr3 ASPL is blue-shifted relative to CsPbBr3 deposited on a bare substrate, corresponding to an increase in the thermal energy scavenged per emitted photon. However, with monolayer Au nanoparticle coverage, ASPL is enhanced relative to the conventional Stokes-shifted PL. Together, these phenomena result in a 6.7-fold increase in the amount of thermal energy extracted from the system during optical absorption and reemission. |
| first_indexed | 2024-12-21T05:31:27Z |
| format | Article |
| id | doaj.art-2467714becd143d4af6b6d077fc6f11a |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-21T05:31:27Z |
| publishDate | 2019-01-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-2467714becd143d4af6b6d077fc6f11a2022-12-21T19:14:32ZengDe GruyterNanophotonics2192-86062192-86142019-01-018459960510.1515/nanoph-2018-0196nanoph-2018-0196Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescenceRoman Benjamin J.0Sheldon Matthew T.1Department of Chemistry, Texas A&M University, College Station, TX, USADepartment of Chemistry, Department of Materials Science & Engineering, Texas A&M University, College Station, TX, USAOne-photon up-conversion, also called anti-Stokes photoluminescence (ASPL), is the process whereby photoexcited carriers scavenge thermal energy and are promoted into a higher energy excited state before emitting a photon of greater energy than initially absorbed. Here, we examine how ASPL from CsPbBr3 nanoparticles is modified by coupling with plasmonically active gold nanoparticles deposited on a substrate. Two coupling regimes are examined using confocal fluorescence microscopy: three to four Au nanoparticles per diffraction limited region and monolayer Au nanoparticle coverage of the substrate. In both regimes, CsPbBr3 ASPL is blue-shifted relative to CsPbBr3 deposited on a bare substrate, corresponding to an increase in the thermal energy scavenged per emitted photon. However, with monolayer Au nanoparticle coverage, ASPL is enhanced relative to the conventional Stokes-shifted PL. Together, these phenomena result in a 6.7-fold increase in the amount of thermal energy extracted from the system during optical absorption and reemission.https://doi.org/10.1515/nanoph-2018-0196optical coolingplasmonperovskiteup-conversionanti-stokes photoluminescence |
| spellingShingle | Roman Benjamin J. Sheldon Matthew T. Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence Nanophotonics optical cooling plasmon perovskite up-conversion anti-stokes photoluminescence |
| title | Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence |
| title_full | Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence |
| title_fullStr | Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence |
| title_full_unstemmed | Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence |
| title_short | Six-fold plasmonic enhancement of thermal scavenging via CsPbBr3 anti-Stokes photoluminescence |
| title_sort | six fold plasmonic enhancement of thermal scavenging via cspbbr3 anti stokes photoluminescence |
| topic | optical cooling plasmon perovskite up-conversion anti-stokes photoluminescence |
| url | https://doi.org/10.1515/nanoph-2018-0196 |
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