Solar-driven hydrogen evolution using a CuInS2/CdS/ZnO heterostructure nanowire array as an efficient photoanode
SCIE
SCOPUS
- Title
- Solar-driven hydrogen evolution using a CuInS2/CdS/ZnO heterostructure nanowire array as an efficient photoanode
- Authors
- Choi, Y; Beak, M; Yong, K
- Date Issued
- 2014-08-07
- Publisher
- Royal Society of Chemistry
- Abstract
- Photoanodes prepared using CuInS2/CdS/ZnO nanowires were fabricated by a solution-based process for constructing a photo-driven hydrogen generation system. For efficient light harvesting and photoexcited charge collection, ZnO nanowire (NW) photoanode arrays were co-sensitized with CdS and CuInS2 (CIS). A CdS layer was deposited on the ZnO NW via successive ion layer adsorption and reaction (SILAR), and the CIS layer was prepared by depositing a molecular precursor solution onto the CdS/ZnO NW. The generated anodic photocurrent was increased with the subsequent deposition of the CIS and CdS layers. Ultraviolet photoelectron spectroscopy analysis revealed cascade type-II band alignments for the CIS/CdS/ZnO NW photoanodes, which enabled efficient electron collection. Our heterostructure photoelectrode has generated a greatly improved photocurrent density of 13.8 mA cm(-2) at 0.3 V vs. SCE under 1 sun illumination.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/11746
- DOI
- 10.1039/C4NR01632G
- ISSN
- 2040-3364
- Article Type
- Article
- Citation
- NANOSCALE, vol. 6, no. 15, page. 8914 - 8918, 2014-08-07
- Files in This Item:
-
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.