2024-03-29T14:05:38Zhttps://repositori.uji.es/oai/requestoai:repositori.uji.es:10234/1823572023-09-11T11:42:52Zcom_10234_160292com_10234_9col_10234_160293
Repositori UJI
author
Suárez, Isaac
author
Vallés Pelarda, Marta
author
Gualdrón Reyes, Andrés Fabián
author
Mora-Sero, Ivan
author
Ferrando, Albert
author
Michinel, Humberto
author
Salgueiro, José Ramón
author
Martínez-Pastor, Juan P.
2019-04-23T10:00:31Z
2019-04-23T10:00:31Z
2019
SUÁREZ, I., VALLÉS-PELARDA, M., GUALDRÓN-REYES, A.F., MORA-SERÓ, I., FERRANDO, A., MICHINEL, H., SALGUEIRO, J.R. y PASTOR, J.P.M., 2019. Outstanding nonlinear optical properties of methylammonium- and Cs-PbX 3 (X = Br, I, and Br–I) perovskites: Polycrystalline thin films and nanoparticles. APL Materials, vol. 7, no. 4, pp. 041106. ISSN 2166-532X. DOI 10.1063/1.5090926
2166-532X
http://hdl.handle.net/10234/182357
https://doi.org/10.1063/1.5090926
Metal Halide Perovskites (MHPs) have arisen as promising materials to construct cost-effective photovoltaic and light emission devices. The
study of nonlinear optical properties of MHPs is necessary to get similar success in nonlinear photonic devices, which is practically absent in
the literature. The determination of the third order nonlinear coefficients is typically done by the Z-scan technique, which is limited by the
scattering of polycrystalline thin films. In this work, we have studied nonlinear optical properties of polycrystalline CH3NH3PbX3 (MAPbX3)
thin films and colloidal CsPbX3 nanoparticles with three different bandgaps (X3 = I3, Br3, and Br1.5I1.5). Their bright generation of photoluminescence
under infrared illumination demonstrates an excellent efficiency of multiphoton absorption. The nonlinear absorption coefficient
( ) was studied by analyzing the transmitted light through the samples, observing the expected Eg
−3 dependence with values as high as
= 1500 cm/GW. In addition, we proposed the use of a modified Z-scan technique with imaging processing to analyze the nonlinear refraction
coefficient (n2) under the laser damage threshold. Our experimental data agree quite well with theoretical predictions, demonstrating the
accuracy of the method and potential applications to other thin films. Moreover, n2 parameter reaches values of 3.5 cm2/GW, indicating the
suitability of MHPs for nonlinear photonics.
eng
© Author(s) 2019 Atribución 4.0 Internacional
Outstanding nonlinear optical properties of methylammonium- and Cs-PbX3 (X = Br, I, and Br–I) perovskites: Polycrystalline thin films and nanoparticles
info:eu-repo/semantics/article
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URL
https://repositori.uji.es/xmlui/bitstream/10234/182357/1/171_PS-NonLinear_Properties.pdf
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URL
https://repositori.uji.es/xmlui/bitstream/10234/182357/4/171_PS-NonLinear_Properties.pdf.txt
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171_PS-NonLinear_Properties.pdf.txt