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원자제어 저차원 전자계 연구단
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Directly Assembled 3D Molybdenum Disulfide on Silicon Wafer for Efficient Photoelectrochemical Water Reduction

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Title
Directly Assembled 3D Molybdenum Disulfide on Silicon Wafer for Efficient Photoelectrochemical Water Reduction
Author(s)
Dinsefa Mensur Andoshe; Gangtae Jin; Chang-Soo Lee; Changyeon Kim; Ki Chang Kwon; Seokhoon Choi; Woonbae Sohn; Cheon Woo Moon; Seung Hee Lee; Jun Min Suh; Sungwoo Kang; Jaehyun Park; Hoseok Heo; Jong Kyu Kim; Seungwu Han; Moon-Ho Jo; Ho Won Jang
Publication Date
2018-03
Journal
ADVANCED SUSTAINABLE SYSTEMS, v.2, no.3, pp.1700142 -
Publisher
WILEY-VCH Verlag GmbH & Co. KGaA
Abstract
MoS2 composed of earth-abundant elements is considered as a promising hydrogen evolution reaction (HER) catalyst for p-type Si photocathode owing to its appropriate hydrogen adsorption free energy for the edge sites and high photochemical stability in acidic electrolytes. However, the direct synthesis of uniform and atomically thin MoS2 on Si by usual chemical vapor deposition techniques remains challenging because of the weak van der Waals interaction between Si and MoS2. Herein, by controlling the gas phase kinetics during metal–organic chemical vapor deposition, wafer-scale direct synthesis of 3D MoS2 films on TiO2-coated p-type Si substrates is demonstrated. The 3D MoS2 layer with a number of edge sites exposed to ambient substantially reduces the HER overpotential of Si photocathode and simultaneously increases the saturation current density due to the antire-flection effect. Directly grown 3D MoS2 thin films are stable under extended water reduction duration. The strategy paves the way for efficient assembly of transition metal disulfide HER catalysts on the p-type photocathode.
URI
https://pr.ibs.re.kr/handle/8788114/5293
ISSN
2366-7486
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > Journal Papers (저널논문)
Files in This Item:
2018_Advanced Science News조문호(공동교신)_Directly Assembled 3D Molybdenum Disulfide on Silicon Wafer for Efficient Photoelectrochemical Water Reduction.pdfDownload

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