Universität zu Köln

Pyeon, Myeongwhun, Wang, Meng, Goenuellue, Yakup, Kaouk, Ali, Jaeckle, Sara, Christiansen, Silke, Hwang, Taejin, Moon, KyoungIl and Mathur, Sanjay (2016). Design of multi-layered TiO2-Fe2O3 photoanodes for photoelectrochemical water splitting: patterning effects on photocurrent density. MRS Commun., 6 (4). S. 442 - 449. NEW YORK: CAMBRIDGE UNIV PRESS. ISSN 2159-6867

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Abstract

We report the effect of patterning on photoelectrochemical (PEC) water-splitting performance. Oxide-oxide heterostructures based on horizontal and vertical heterojunctions were fabricated on transparent conductive oxide glass by sequential plasma enhanced chemical vapor deposition (PECVD) of individual metal oxide. Featured masks were employed to enable three-dimensional patternings of stripes and cross-bars structures formed by Fe2O3 and TiO2 layers. PEC measurement was carried out by a three-electrode cell. It was found that double layered TiO2//Fe2O3: FTO showed a decrease in PEC performance when compared with single Fe2O3: FTO layer, whereas triple-layered Fe2O3//TiO2//Fe2O3: FTO (both patterned and unpatterned samples) displayed enhanced photocurrent density. The results show that the existence of multiple phase boundaries does not always add up to PEC enhancement observed in single heterojunction.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Pyeon, Myeongwhun UNSPECIFIED UNSPECIFIED UNSPECIFIED Wang, Meng UNSPECIFIED UNSPECIFIED UNSPECIFIED Goenuellue, Yakup UNSPECIFIED UNSPECIFIED UNSPECIFIED Kaouk, Ali UNSPECIFIED UNSPECIFIED UNSPECIFIED Jaeckle, Sara UNSPECIFIED UNSPECIFIED UNSPECIFIED Christiansen, Silke UNSPECIFIED UNSPECIFIED UNSPECIFIED Hwang, Taejin UNSPECIFIED UNSPECIFIED UNSPECIFIED Moon, KyoungIl UNSPECIFIED UNSPECIFIED UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-253540
DOI:	10.1557/mrc.2016.54
Journal or Publication Title:	MRS Commun.
Volume:	6
Number:	4
Page Range:	S. 442 - 449
Date:	2016
Publisher:	CAMBRIDGE UNIV PRESS
Place of Publication:	NEW YORK
ISSN:	2159-6867
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language HEMATITE THIN-FILMS; HYDROGEN-PRODUCTION; OXIDE PHOTOANODES; NANOTUBE ARRAYS; TI; PERFORMANCE; NANOSTRUCTURES; PHOTOOXIDATION; ELECTRODES; PYROLYSIS Multiple languages Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/25354