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Chaotic signatures of photoconductive Cu2ZnSnS4 nanostructures explored by Lorenz attractors

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Title Chaotic signatures of photoconductive Cu2ZnSnS4 nanostructures explored by Lorenz attractors
Title of Series New Journal of Physics, Volume 20, 2018
Author Hernández-Acosta, M. A.
Trejo-Valdez, M.
Castro-Chacón, J. H.
Torres-San Miguel, C. R.
Martínez-Gutiérrez, H.
Torres-Torres, Carlos
License CC Attribution 3.0 Unported:
You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.5446/38885
Publisher Institute of Physics (IOP), Deutsche Physikalische Gesellschaft (DPG)
Release Date 2018
Language English

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Subject Area Physics
Abstract Photoconductive and third-order nonlinear optical properties exhibited by Cu2ZnSnS4 nanostructures are presented. The samples were synthetized in thin film form by a spray pyrolysis processing route. Distinctions in the photoconductive behavior throughout the samples were clearly noted by modulating their optoelectronic response dependent on electrical frequency. Vectorial two-wave mixing experiments were carried out at a 532 nm wavelength provided by a Nd:YAG laser system to study the optical nonlinearities in the samples. An induced transparency effect was observed during nanosecond single-beam experiments in the nanostructures reported. Quantum and thermal processes were considered to be the main physical mechanism responsible for the photo-electrical phenomena and nonlinear refraction in the nanostructures. Potential applications for developing nanophotonic and nanoelectronic instrumentation systems can be contemplated.

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the uncertainties that invariably existing characterizing the properties of composite materials have their origin in their micro and nano of structural scale the phenomenal processes responsible for the
uncertainties which range from the micro scale to the macro scale are involved in required the development of
complex models for the
characterization of the sample scanning electron microscopy and EDS analysis were undertaken
from the studies can be observed in inhomogeneous
morphology with randomly distributed needle like particles
due to the nature of the study it was required to obtain the optical absorption spectrum as well as
electrochemical impedance spectrum of the film the optical transmittance of the sample was monitored during the photo
electrical studies in order to exploring the potential non-linear optical absorption phenomenon
moreover a
vectorial two-wave mixing experiment was implemented to analyze the 3rd order optical
nonlinearities in the structures we
identified that electrical signals presented a dependence on electrical frequency and then the study was performed by using an electronic modulation that followed a chaotic behavior to facilitate the processes for the measurement of nonlinear optical effects we used the advantages of high sensitivity related to initial
conditions inherent in chaotic systems for the simulation of a
chaotic attractor the Lorenzo equations related to a choice circuit were used initially the chaotic attractor can be observed in a stable state however when increasing the power of the laser beam clearly increase response can be observed for the behavior of the chaotic in this work
is highlighted the potential of a chaotic signal modulation for evaluating
photo electrical properties exhibited by structures
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