Efficient organic photovoltaic cells on a single layer graphene transparent conductive electrode using MoOx as an interfacial layer

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	Efficient organic photovoltaic cells on a single layer graphene transparent conductive electrode using MoOx as an interfacial layer
	Du, J. H.; Jin, H.; Zhang, Z. K.; Zhang, D. D.; Jia, S.; Ma, L. P.; Ren, W. C.; Cheng, H. M.; Burn, P. L.; Du, JH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
刊名	ROYAL SOC CHEMISTRY
	2017-01-07
卷号	9 期号:1 页码:251-257
ISSN号	2040-3364
英文摘要	The large surface roughness, low work function and high cost of transparent electrodes using multilayer graphene films can limit their application in organic photovoltaic (OPV) cells. Here, we develop single layer graphene (SLG) films as transparent anodes for OPV cells that contain light-absorbing layers comprised of the evaporable molecular organic semiconductor materials, zinc phthalocyanine (ZnPc)/fullerene (C60), as well as a molybdenum oxide (MoOx) interfacial layer. In addition to an increase in the optical transmittance, the SLG anodes had a significant decrease in surface roughness compared to two and four layer graphene (TLG and FLG) anodes fabricated by multiple transfer and stacking of SLGs. Importantly, the introduction of a MoOx interfacial layer not only reduced the energy barrier between the graphene anode and the active layer, but also decreased the resistance of the SLG by nearly ten times. The OPV cells with the structure of polyethylene terephthalate/SLG/MoOx/CuI/ZnPc/C60/bathocuproine/Al were flexible, and had a power conversion efficiency of up to 0.84%, which was only 17.6% lower than the devices with an equivalent structure but prepared on commercial indium tin oxide anodes. Furthermore, the devices with the SLG anode were 50% and 86.7% higher in efficiency than the cells with the TLG and FLG anodes. These results show the potential of SLG electrodes for flexible and wearable OPV cells as well as other organic optoelectronic devices.; The large surface roughness, low work function and high cost of transparent electrodes using multilayer graphene films can limit their application in organic photovoltaic (OPV) cells. Here, we develop single layer graphene (SLG) films as transparent anodes for OPV cells that contain light-absorbing layers comprised of the evaporable molecular organic semiconductor materials, zinc phthalocyanine (ZnPc)/fullerene (C60), as well as a molybdenum oxide (MoOx) interfacial layer. In addition to an increase in the optical transmittance, the SLG anodes had a significant decrease in surface roughness compared to two and four layer graphene (TLG and FLG) anodes fabricated by multiple transfer and stacking of SLGs. Importantly, the introduction of a MoOx interfacial layer not only reduced the energy barrier between the graphene anode and the active layer, but also decreased the resistance of the SLG by nearly ten times. The OPV cells with the structure of polyethylene terephthalate/SLG/MoOx/CuI/ZnPc/C60/bathocuproine/Al were flexible, and had a power conversion efficiency of up to 0.84%, which was only 17.6% lower than the devices with an equivalent structure but prepared on commercial indium tin oxide anodes. Furthermore, the devices with the SLG anode were 50% and 86.7% higher in efficiency than the cells with the TLG and FLG anodes. These results show the potential of SLG electrodes for flexible and wearable OPV cells as well as other organic optoelectronic devices.
学科主题	Chemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
语种	英语
资助机构	National Science Foundation of China [51572265, 51325205, 51521091]; Ministry of Science and Technology of China [2016YFA0200101]; Chinese Academy of Sciences [KGZD-EW-303-1, KGZD-EW-303-3]; Australian Government through the Australian Renewable Energy Agency (ARENA) Australian Centre for Advanced Photovoltaics
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79191]
专题	金属研究所_中国科学院金属研究所
通讯作者	Du, JH (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.; Jin, H (reprint author), Univ Queensland, Ctr Organ Photon & Elect, Brisbane, Qld 4072, Australia.
推荐引用方式 GB/T 7714	Du, J. H.,Jin, H.,Zhang, Z. K.,et al. Efficient organic photovoltaic cells on a single layer graphene transparent conductive electrode using MoOx as an interfacial layer[J]. ROYAL SOC CHEMISTRY,2017,9(1):251-257.
APA	Du, J. H..,Jin, H..,Zhang, Z. K..,Zhang, D. D..,Jia, S..,...&Jin, H .(2017).Efficient organic photovoltaic cells on a single layer graphene transparent conductive electrode using MoOx as an interfacial layer.ROYAL SOC CHEMISTRY,9(1),251-257.
MLA	Du, J. H.,et al."Efficient organic photovoltaic cells on a single layer graphene transparent conductive electrode using MoOx as an interfacial layer".ROYAL SOC CHEMISTRY 9.1(2017):251-257.