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Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles

Ultrafast relaxation dynamics of diamond-like carbon (DLC) films with embedded Ag nanoparticles (DLC:Ag) and photovoltaic properties of heterojunctions consisting of DLC:Ag and crystalline silicon (DLC:Ag/Si) were investigated by means of transient absorption (TAS) spectroscopy and photovoltaic meas...

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Autores principales: Meškinis, Šarūnas, Peckus, Domantas, Vasiliauskas, Andrius, Čiegis, Arvydas, Gudaitis, Rimantas, Tamulevičius, Tomas, Yaremchuk, Iryna, Tamulevičius, Sigitas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5398965/
https://www.ncbi.nlm.nih.gov/pubmed/28431465
http://dx.doi.org/10.1186/s11671-017-2065-1
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author Meškinis, Šarūnas
Peckus, Domantas
Vasiliauskas, Andrius
Čiegis, Arvydas
Gudaitis, Rimantas
Tamulevičius, Tomas
Yaremchuk, Iryna
Tamulevičius, Sigitas
author_facet Meškinis, Šarūnas
Peckus, Domantas
Vasiliauskas, Andrius
Čiegis, Arvydas
Gudaitis, Rimantas
Tamulevičius, Tomas
Yaremchuk, Iryna
Tamulevičius, Sigitas
author_sort Meškinis, Šarūnas
collection PubMed
description Ultrafast relaxation dynamics of diamond-like carbon (DLC) films with embedded Ag nanoparticles (DLC:Ag) and photovoltaic properties of heterojunctions consisting of DLC:Ag and crystalline silicon (DLC:Ag/Si) were investigated by means of transient absorption (TAS) spectroscopy and photovoltaic measurements. The heterojunctions using both p type and n type silicon were studied. It was found that TAS spectra of DLC:Ag films were dependent on the used excitation wavelength. At wavelengths where Ag nanoparticles absorbed light most intensively, only DLC signal was registered. This result is in good accordance with an increase of the DLC:Ag/Si heterojunction short circuit current and open circuit voltage with the excitation wavelength in the photovoltaic measurements. The dependence of the TAS spectra of DLC:Ag films and photovoltaic properties of DLC:Ag/Si heterostructures on the excitation wavelength was explained as a result of trapping of the photoexcited hot charge carriers in DLC matrix. The negative photovoltaic effect was observed for DLC:Ag/p-Si heterostructures and positive (“conventional”) for DLC:Ag/n-Si ones. It was explained by the excitation of hot plasmonic holes in the Ag nanoparticles embedded into DLC matrix. Some decrease of DLC:Ag/Si heterostructures photovoltage as well as photocurrent with DLC:Ag film thickness was observed, indicating role of the interface in the charge transfer process of photocarriers excited in Ag nanoparticles.
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spelling pubmed-53989652017-05-05 Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles Meškinis, Šarūnas Peckus, Domantas Vasiliauskas, Andrius Čiegis, Arvydas Gudaitis, Rimantas Tamulevičius, Tomas Yaremchuk, Iryna Tamulevičius, Sigitas Nanoscale Res Lett Nano Express Ultrafast relaxation dynamics of diamond-like carbon (DLC) films with embedded Ag nanoparticles (DLC:Ag) and photovoltaic properties of heterojunctions consisting of DLC:Ag and crystalline silicon (DLC:Ag/Si) were investigated by means of transient absorption (TAS) spectroscopy and photovoltaic measurements. The heterojunctions using both p type and n type silicon were studied. It was found that TAS spectra of DLC:Ag films were dependent on the used excitation wavelength. At wavelengths where Ag nanoparticles absorbed light most intensively, only DLC signal was registered. This result is in good accordance with an increase of the DLC:Ag/Si heterojunction short circuit current and open circuit voltage with the excitation wavelength in the photovoltaic measurements. The dependence of the TAS spectra of DLC:Ag films and photovoltaic properties of DLC:Ag/Si heterostructures on the excitation wavelength was explained as a result of trapping of the photoexcited hot charge carriers in DLC matrix. The negative photovoltaic effect was observed for DLC:Ag/p-Si heterostructures and positive (“conventional”) for DLC:Ag/n-Si ones. It was explained by the excitation of hot plasmonic holes in the Ag nanoparticles embedded into DLC matrix. Some decrease of DLC:Ag/Si heterostructures photovoltage as well as photocurrent with DLC:Ag film thickness was observed, indicating role of the interface in the charge transfer process of photocarriers excited in Ag nanoparticles. Springer US 2017-04-20 /pmc/articles/PMC5398965/ /pubmed/28431465 http://dx.doi.org/10.1186/s11671-017-2065-1 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Nano Express
Meškinis, Šarūnas
Peckus, Domantas
Vasiliauskas, Andrius
Čiegis, Arvydas
Gudaitis, Rimantas
Tamulevičius, Tomas
Yaremchuk, Iryna
Tamulevičius, Sigitas
Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title_full Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title_fullStr Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title_full_unstemmed Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title_short Photovoltaic Properties and Ultrafast Plasmon Relaxation Dynamics of Diamond-Like Carbon Nanocomposite Films with Embedded Ag Nanoparticles
title_sort photovoltaic properties and ultrafast plasmon relaxation dynamics of diamond-like carbon nanocomposite films with embedded ag nanoparticles
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5398965/
https://www.ncbi.nlm.nih.gov/pubmed/28431465
http://dx.doi.org/10.1186/s11671-017-2065-1
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