NDLI: In situ growth of double-layer MoO3/MoS2 film from MoS2 for hole-transport layers in organic solar cell

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Back cover

Journal of Materials Chemistry A Vol - 2 Issue - 7

Journal of Materials Chemistry A Vol - 2 Issue - 6

Journal of Materials Chemistry A Vol - 2 Issue - 5

Journal of Materials Chemistry A Vol -1

In situ growth of double-layer MoO₃/MoS₂ film from MoS₂ for hole-transport layers in organic solar cell

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhao, Xingzhong Fang, Guojia Ke, Weijun Qin, Pingli Zheng, Qiao Cheng, Fei Wan, Jiawei Lei, Hongwei
Copyright Year	2014
Abstract	Efficient organic solar cells (OSCs) based on regioregular poly(3-hexylthiophene):fullerene derivative [6,6]-phenyl-C61butyric acid methyl ester composites have been fabricated on fluorine-doped tin oxide (FTO) coated glass substrates by a radio frequency (RF) sputtered and ultraviolet ozone (UVO) treated MoS2 film as the hole-transport layer (HTL). With the help of X-ray photoelectron spectroscopy, ultraviolet photoelectron spectroscopy, Raman spectroscopy, transmission spectra and the Hall-effect system, we find that the deposition temperature can modulate the contents of the various valence states of molybdenum, which can result in changes of the energy level, and the optical and electrical properties of the MoS2 films. MoS2 has been oxidized to a double-layered MoO3–MoS2 film by UVO treatment. Due to the presence of the molybdenum oxidation states Mo5+ and Mo6+, the MoS2 film shows p-type conductive behavior, and its smaller electron affinity can effectively block electron from exciton dissociation. By optimizing the HTL thickness and sputtering deposition temperature, a power conversion efficiency up to 4.15% has been achieved for an OSC that used a double-layered MoO3–MoS2 film as the HTL. Its JSC is bigger than that of the OSC with a pure MoO3 film as the HTL. This shows that this double layer MoO3–MoS2 interface is more favorable for hole-transfer.
Starting Page	2742
Ending Page	2756
Page Count	15
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	8
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta13579a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	FTO OSC JSC Raman Polythiophene Fullerene chemistry Carboxylic acid Ester Tin Radio frequency Ultraviolet Ozone X-ray photoelectron spectroscopy Photoemission spectroscopy Ultraviolet photoelectron spectroscopy Raman spectroscopy Molybdenum Extrinsic semiconductor Electron affinity Exciton Dissociative Sputtering
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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