Beyond universal volume scaling: tailoring two-photon absorption in nanomaterials by heterostructure design
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Show full item recordcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/7013
comunitat-uji-handle3:10234/8638
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INVESTIGACIONMetadata
Title
Beyond universal volume scaling: tailoring two-photon absorption in nanomaterials by heterostructure designAuthor (s)
Date
2023-07-28Publisher
ACS Publications (American Chemical Society)ISSN
1530-6984; 1530-6992Bibliographic citation
Alo, A., Barros, L. W., Nagamine, G., Lemus, J. C., Planelles, J., Movilla, J. L., ... & Padilha, L. A. (2023). Beyond Universal Volume Scaling: Tailoring Two-Photon Absorption in Nanomaterials by Heterostructure Design. Nano Letters 23 (15), 7180-7187Type
info:eu-repo/semantics/articleVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
Colloidal semiconductor nanomaterials present broadband, with large cross-section, two-photon absorption (2PA) spectra, which turn them into an important platform for applications that benefit from a high nonlinear ... [+]
Colloidal semiconductor nanomaterials present broadband, with large cross-section, two-photon absorption (2PA) spectra, which turn them into an important platform for applications that benefit from a high nonlinear optical response. Despite that, to date, the only means to control the magnitude of the 2PA cross-section is by changing the nanoparticle volume, as it follows a universal volume scale, independent of the material composition. As the emission spectrum is connected utterly to the nanomaterial dimensions, for a given material, the magnitude of the nonlinear optical response is also coupled to the emission spectra. Here, we demonstrate a means to decouple both effects by exploring the 2PA response of different types of heterostructures, tailoring the volume dependence of the 2PA cross-section due to the different dependence of the density of final states on the nanoparticle volume. By heterostructure engineering, one can obtain 1 order of magnitude enhancement of the 2PA cross-section with minimum emission spectra shift. [-]
Is part of
Nano Letters, Vol. 23 (15) (2023)Funder Name
São Paulo Research Foundation, FAPESP | Generalitat Valenciana | Universitat Jaume I
Project code
grants 2018/15574-6, 2018/25339-4, 2019/22823-5 | Prometeo project 22I235-CIPROM/2021/078 | UJI-B2021-06
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info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
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