MoSx supported hematite with enhanced photoelectrochemical performance

被引：30

作者：

Ahn, Hyo-Jin ^{[1
]}

Yoon, Ki-Yong ^{[1
]}

Kwak, Myung-Jun ^{[1
]}

Lee, Jung-Soo ^{[1
]}

Thiyagarajan, Pradheep ^{[1
]}

Jang, Ji-Hyun ^{[1
,2
]}

机构：

[1] UNIST, Sch Energy & Chem Engn, Ulsan 689798, South Korea

[2] Inst Basic Sci, Ctr Multidimens Carbon Mat, Ulsan 689798, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 43期

关键词：

P-N-JUNCTION; VISIBLE-LIGHT; WATER OXIDATION; HYDROGEN-GENERATION; AMORPHOUS MOS3; GRAPHENE OXIDE; H-2; EVOLUTION; THIN-LAYERS; FILMS; HETEROJUNCTION;

D O I：

10.1039/c5ta06743j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：21444 / 21450

页数：7

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