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Jang, Ji-Hyun
Nano Crystal Lab (NCL)
Research Interests
  • Graphene, photoelectrochemical (PEC) H2 generation, ORR/OER, SERS,3D-Nanostructures, supercapacitors, thermoelectric materials

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MoSx supported hematite with enhanced photoelectrochemical performance

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Title
MoSx supported hematite with enhanced photoelectrochemical performance
Author
Ahn, Hyo-JinYoon, Ki-YongKwak, Myung-JunLee, Jung-SooThiyagarajan, PradheepJang, Ji-Hyun
Issue Date
2015-10
Publisher
ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.3, no.43, pp.21444 - 21450
Abstract
By creating a p-n heterojunction of molybdenum sulfide (MoSx)/Ti-doped Fe2O3 (Ti-Fe2O3), we successfully addressed electron-hole transfer problems of hematite and thus achieved the enhanced photoelectrochemical (PEC) performance. MoSx/Ti-Fe2O3 with a thin MoSx layer on the surface of Ti-Fe2O3 fabricated a p-n junction that provided facile charge transfer pathways due to an internal electric field between Ti-Fe2O3 and MoSx, and achieved suppressed charge recombination. The optimized MoSx/Ti-Fe2O3 sample showed a 240% increased photocurrent density (3.03 mA cm(-2)) over pristine Fe2O3 at RHE 1.50 V. All our data including IPCE, PL, and EIS clearly confirmed the improved PEC performance of MoSx/Ti-Fe2O3 achieved by the formation of a p-n junction with a facile electron-hole transport pathway.
URI
https://scholarworks.unist.ac.kr/handle/201301/17872
URL
http://pubs.rsc.org/en/Content/ArticleLanding/2015/TA/C5TA06743J#!divAbstract
DOI
10.1039/c5ta06743j
ISSN
2050-7488
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