Light management in TiO2 thin films integrated with Au plasmonic nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F20%3A73603919" target="_blank" >RIV/61989592:15310/20:73603919 - isvavai.cz</a>

Výsledek na webu

<a href="https://iopscience.iop.org/article/10.1088/1361-6641/ab6cea" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6641/ab6cea</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6641/ab6cea" target="_blank" >10.1088/1361-6641/ab6cea</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Light management in TiO2 thin films integrated with Au plasmonic nanoparticles

Popis výsledku v původním jazyce

The light-harvesting properties of metal oxide thin films can be remarkably increased by the introduction of plasmonic nanostructures, leading to higher efficiencies in photovoltaic or photoelectrochemical devices. In the prototypical material combination, Au-TiO2, nano- and mesoscale porosity of TiO2 is desirable to improve not only the light-harvesting, but also the available surface area for chemical reactions. Moreover, great attention has been given to the control of size and shape of Au nanoparticles (NPs) to tune the overall optical properties of the film. In this work, we investigate the optical properties of composite Au-TiO2 films exhibiting remarkable light scattering properties. TiO2 is characterized by a tree-like hierarchical morphology produced by pulsed laser deposition, and two different configurations for Au integration, namely Au on top and at the bottom of TiO2, are explored while varying the size of Au NPs. The hierarchical oxide morphology allows to achieve superior scattering properties after the combination with Au NPs with respect to films obtained from a commercial paste deposition. Both the Au-top and Au-bottom configurations enable to tune the plasmonic properties of Au NPs. Specifically, outstanding scattering properties are exhibited by the composite TiO2 filmgrown on top of large (similar to 100 nm) Au NPs. These results show the potential interest of employing such integrated films as photoanodes in dye-sensitized or perovskite-based solar cells, or in photoelectrochemical cells for water splitting. An analogous approach can be employed for alternative materials, both considering the plasmonic structures as well as the semiconductor layer

Název v anglickém jazyce

Light management in TiO2 thin films integrated with Au plasmonic nanoparticles

Popis výsledku anglicky

The light-harvesting properties of metal oxide thin films can be remarkably increased by the introduction of plasmonic nanostructures, leading to higher efficiencies in photovoltaic or photoelectrochemical devices. In the prototypical material combination, Au-TiO2, nano- and mesoscale porosity of TiO2 is desirable to improve not only the light-harvesting, but also the available surface area for chemical reactions. Moreover, great attention has been given to the control of size and shape of Au nanoparticles (NPs) to tune the overall optical properties of the film. In this work, we investigate the optical properties of composite Au-TiO2 films exhibiting remarkable light scattering properties. TiO2 is characterized by a tree-like hierarchical morphology produced by pulsed laser deposition, and two different configurations for Au integration, namely Au on top and at the bottom of TiO2, are explored while varying the size of Au NPs. The hierarchical oxide morphology allows to achieve superior scattering properties after the combination with Au NPs with respect to films obtained from a commercial paste deposition. Both the Au-top and Au-bottom configurations enable to tune the plasmonic properties of Au NPs. Specifically, outstanding scattering properties are exhibited by the composite TiO2 filmgrown on top of large (similar to 100 nm) Au NPs. These results show the potential interest of employing such integrated films as photoanodes in dye-sensitized or perovskite-based solar cells, or in photoelectrochemical cells for water splitting. An analogous approach can be employed for alternative materials, both considering the plasmonic structures as well as the semiconductor layer

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SEMICONDUCTOR SCIENCE AND TECHNOLOGY

ISSN

0268-1242

e-ISSN

—

Svazek periodika

35

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

"035016-1"-"035016-10"

Kód UT WoS článku

000537720600005

EID výsledku v databázi Scopus

2-s2.0-85082240807