Localized surface plasmon effects on the photophysics of perovskite thin films embedding metal nanoparticles
Entity
UAM. Departamento de Física de MaterialesPublisher
Royal Society of ChemistryDate
2020-01-01Citation
10.1039/C9TC05785D
Journal of Materials Chemistry C 2020.8 (2020): 916-921
ISSN
2050-7526 (print); 2050-7534 (online)DOI
10.1039/C9TC05785DFunded by
The research leading to these results has received funding from the Spanish Ministry of Economy and Competitiveness under grant MAT2017-88584-R (AEI/FEDER,UE). A. B. was supported by the U. S. Department of State through the Fulbright Program. S. C. P. is grateful for the support of the AEI under the Juan de la Cierva Incorporación programme (IJCI-2016-28549)Project
Gobierno de España. MAT2017-88584-R; Gobierno de España. IJCI-2016-28549Editor's Version
http://dx.doi.org/10.1039/C9TC05785DSubjects
Methylammonium lead iodide perovskite films; Surface plasmon resonances (SPRs); Plasmonic scattering; FísicaRights
© 2020 The Royal Society of ChemistryAbstract
Herein we provide direct experimental evidence that proves that the photophysical properties of thin methylammonium lead iodide perovskite films are significantly enhanced by localized surface plasmon resonances (SPRs). Observations are well supported by rigorous calculations that prove that improved light harvesting can be unequivocally attributed to plasmonic scattering and near field reinforcement effects around silver nanoparticles embedded within the semiconductor layer. Adequate design of the localized SPR allows raising the absorptance of a 300 nm thick film at well-defined spectral regions while minimizing the parasitic absorption from the metallic inclusions. Measured enhancements can be as large as 80% at specific wavelengths and 20% when integrated over the whole range at which SPR occurs, in agreement with theoretical estimations. Simultaneously, the characteristic quenching effect that the vicinity of metals has on the photoluminescence of semiconductors is largely compensated for by the combined effect of the enhanced photoexcitation and the higher local density of photon states occurring at SPR frequencies, with a two fold increase of the perovskite photoemission efficiency being measured
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Google Scholar:Bayles, Aaron
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Carretero Palacios, Sol
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Calió, Laura
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Lozano, Gabriel
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Calvo, Mauricio E.
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Míguez, Hernán
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