Photoelectrochemical hydrogen evolution of tapered silicon nanowires

Title
Photoelectrochemical hydrogen evolution of tapered silicon nanowires
Author
이정호
Keywords
METALLURGICAL SILICON; SURFACES; ARRAY
Issue Date
2015-01
Publisher
ROYAL SOC CHEMISTRY
Citation
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, v. 17, No. 2, Page. 800-804
Abstract
The origin of the photocurrent enhancement and the overpotential reduction in solar water splitting employing nanostructured silicon is still a matter of debate. A set of tapered Si nanowires (SiNWs) has been designed for clarifying the impact of nanostructured Si on the hydrogen evolution reaction (HER) while precisely tailoring several interference factors such as surface area, light absorption and surface defect density. We find that defect passivation by KOH achieved by tapering is much more beneficial than the optical gain. Surfactant-mediated modification of SiNWs is capable of engineering the band structure. As a result, we suggest a guideline for nanostructured Si photoelectrodes optimized for the HER.
URI
http://pubs.rsc.org/-/content/articlehtml/2015/cp/c4cp04396khttp://repository.hanyang.ac.kr/handle/20.500.11754/100621
ISSN
1463-9076; 1463-9084
DOI
10.1039/c4cp04396k
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE