Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F17%3A73582010" target="_blank" >RIV/61989592:15310/17:73582010 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/17:43914922

Výsledek na webu

<a href="http://www.mdpi.com/1420-3049/22/5/775/htm" target="_blank" >http://www.mdpi.com/1420-3049/22/5/775/htm</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/molecules22050775" target="_blank" >10.3390/molecules22050775</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates

Popis výsledku v původním jazyce

This work describes the preparation of transparent TiO2 nanotube (TNT) arrays on fluorine-doped tin oxide (FTO) substrates. An optimized electrolyte composition (0.2 mol dm(-3) NH4F and 4 mol dm(-3) H2O in ethylene glycol) was used for the anodization of Ti films with different thicknesses (from 100 to 1300 nm) sputtered on the FTO glass substrates. For Ti thicknesses 600 nm and higher, anodization resulted in the formation of TNT arrays with an outer nanotube diameter around 180 nm and a wall thickness around 45 nm, while for anodized Ti thicknesses of 100 nm, the produced nanotubes were not well defined. The transmittance in the visible region (lambda = 500 nm) varied from 90% for the thinnest TNT array to 65% for the thickest TNT array. For the fabrication of transparent TNT arrays by anodization, the optimal Ti thickness on FTO was around 1000 nm. Such fabricated TNT arrays with a length of 2500 nm exhibit stable photocurrent densities in aqueous electrolytes (similar to 300 mu A cm(-2) at potential 0.5 V vs. Ag/AgCl). The stability of the photocurrent response and a sufficient transparency (&gt;= 65%) enables the use of transparent TNT arrays in photoelectrochemical applications when the illumination from the support/semiconductor interface is a necessary condition and the transmitted light can be used for another purpose (photocathode or photochemical reaction in the electrolyte).

Název v anglickém jazyce

Transparent Nanotubular TiO2 Photoanodes Grown Directly on FTO Substrates

Popis výsledku anglicky

This work describes the preparation of transparent TiO2 nanotube (TNT) arrays on fluorine-doped tin oxide (FTO) substrates. An optimized electrolyte composition (0.2 mol dm(-3) NH4F and 4 mol dm(-3) H2O in ethylene glycol) was used for the anodization of Ti films with different thicknesses (from 100 to 1300 nm) sputtered on the FTO glass substrates. For Ti thicknesses 600 nm and higher, anodization resulted in the formation of TNT arrays with an outer nanotube diameter around 180 nm and a wall thickness around 45 nm, while for anodized Ti thicknesses of 100 nm, the produced nanotubes were not well defined. The transmittance in the visible region (lambda = 500 nm) varied from 90% for the thinnest TNT array to 65% for the thickest TNT array. For the fabrication of transparent TNT arrays by anodization, the optimal Ti thickness on FTO was around 1000 nm. Such fabricated TNT arrays with a length of 2500 nm exhibit stable photocurrent densities in aqueous electrolytes (similar to 300 mu A cm(-2) at potential 0.5 V vs. Ag/AgCl). The stability of the photocurrent response and a sufficient transparency (&gt;= 65%) enables the use of transparent TNT arrays in photoelectrochemical applications when the illumination from the support/semiconductor interface is a necessary condition and the transmitted light can be used for another purpose (photocathode or photochemical reaction in the electrolyte).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA15-19705S" target="_blank" >GA15-19705S: Pokročilé uspořádané nanostruktury, připravené z magnetrony deponovaných kovových slitin, pro fotonické aplikace</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Molecules

ISSN

1420-3049

e-ISSN

—

Svazek periodika

20

Číslo periodika v rámci svazku

5

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

11

Strana od-do

"775-1"-"775-11"

Kód UT WoS článku

000404522900097

EID výsledku v databázi Scopus

2-s2.0-85020193293