Number of the records: 1
Facile fabrication of tin-doped hematite photoelectrodes - effect of doping on magnetic properties and performance for light-induced water splitting
- 1.
SYSNO ASEP 0387442 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Facile fabrication of tin-doped hematite photoelectrodes - effect of doping on magnetic properties and performance for light-induced water splitting Author(s) Frydrych, J. (CZ)
Machala, L. (CZ)
Tuček, J. (CZ)
Šišková, K. (CZ)
Filip, J. (CZ)
Pechoušek, J. (CZ)
Šafářová, K. (CZ)
Vondráček, Martin (FZU-D) RID, ORCID
Seo, J. H. (KR)
Schneeweiss, Oldřich (UFM-A) RID, ORCID
Grätzel, M. (CH)
Sivula, K. (CH)
Zbořil, R. (CZ)Number of authors 13 Source Title Journal of Materials Chemistry. - : ROYAL SOC CHEMISTRY - ISSN 0959-9428
Roč. 22, č. 43 (2012), s. 23232-23239Number of pages 8 s. Language eng - English Country GB - United Kingdom Keywords Alpha-Fe203 thin-films ; photoanodes ; electrodes ; nanostructures ; oxides Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GA106/08/1440 GA ČR - Czech Science Foundation (CSF) LC06058 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UFM-A - RVO:68081723 ; FZU-D - RVO:68378271 UT WOS 000310721400056 DOI 10.1039/c2jm34639g Annotation We present a new, easily scalable method for the deposition of nanocrystalline hematite photoelectrodes based on the spin-coating of a mixed solution containing tin(II) and iron(III) chlorides followed by thermal treatment. Our facile approach does not require any additional film-forming organic species and allows simple control of the photoelectrochemical performance of the electrode by adjusting the degree of tin doping. When annealed at 650 degrees C a strong increase in the water oxidation photocurrent is observed with increasing tin concentration. The maximum performance (0.45 mA cm(-2) at 1.43 V vs. RHE) was found at the highest possible tin loading (20 : 100, Sn : Fe). The contrasting performance of electrodes annealed at 650 degrees C and 800 degrees C suggests different activation processes for dopant diffusion and activation. The doping of tin into the crystal structure of hematite thin films is directly evidenced by X-ray photoelectron spectroscopy and indirectly by changes in the intrinsic magnetic parameters (Morin temperature, Neel temperature) of the hematite films. The magnetization measurements thus represent a potential technique to quantify doping amounts in hematite. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2013
Number of the records: 1