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Ethanedithiol Treat...
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Bai, SaiZhejiang University, Peoples R China; Zhejiang University, Peoples R China
(author)
Ethanedithiol Treatment of Solution-Processed ZnO Thin Films: Controlling the Intragap States of Electron Transporting Interlayers for Efficient and Stable Inverted Organic Photovoltaics
- Article/chapterEnglish2015
Publisher, publication year, extent ...
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2014-11-22
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Wiley-VCH Verlag,2015
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electronicrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:liu-116817
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-116817URI
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https://doi.org/10.1002/aenm.201401606DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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Funding Agencies|National High Technology Research and Development Program of China [2011AA050520]; National Basic Research Program of China (973 Program) [2012CB932402]; National Natural Science Foundation of China [51172203]; Natural Science Funds for Distinguished Young Scholar of Zhejiang Province [R4110189]; Public Welfare Project of Zhejiang Province [2013C31057]; Swedish Energy Agency (Energimyndigheten); Swedish Research Council (VR); European Commission under a Marie Curie Intra-European Fellowship for Career Development
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The surface defects of solution-processed ZnO films lead to various intragap states. When the solution-processed ZnO films are used as electron transport interlayers (ETLs) in inverted organic solar cells, the intragap states act as interfacial recombination centers for photogenerated charges and thereby degrade the device performance. Here, a simple passivation method based on ethanedithiol (EDT) treatment is demonstrated, which effectively removes the surface defects of the ZnO nanocrystal films by forming zinc ethanedithiolates. The passivation by EDT treatment modulates the intragap states of the ZnO films and introduces a new intragap band. When the EDT-treated ZnO nanocrystal films are used as ETLs in inverted organic solar cells, both the power conversion efficiency and stability of the devices are improved. The control studies show that the solar cells with EDT-treated ZnO films exhibit reduced charge recombination rates and enhanced charge extraction properties. These features are consistent with the fact that the modulation of the intragap states results in reduction of interfacial recombination as well as the improved charge selectivity and electron transport properties of the ETLs. It is further demonstrated that the EDT treatment-based passivation method can be extended to ZnO films deposited from sol-gel precursors.
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Jin, YizhengZhejiang University, Peoples R China; Zhejiang University, Peoples R China
(author)
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Liang, XiaoyongZhejiang University, Peoples R China; Zhejiang University, Peoples R China
(author)
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Ye, ZhizhenZhejiang University, Peoples R China; Zhejiang University, Peoples R China
(author)
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Wu, ZhongweiSoochow University, Peoples R China
(author)
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Sun, BaoquanSoochow University, Peoples R China
(author)
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Ma, ZaifeiLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan(Swepub:liu)zaima15
(author)
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Tang, ZhengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan(Swepub:liu)zheta23
(author)
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Wang, JianpuNanjing Technical University, Peoples R China
(author)
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Wuerfel, UliFraunhofer Institute Solar Energy Syst ISE, Germany; University of Freiburg, Germany
(author)
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Gao, FengLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan(Swepub:liu)fenga88
(author)
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Zhang, FenglingLinköpings universitet,Biomolekylär och Organisk Elektronik,Tekniska högskolan(Swepub:liu)fenzh60
(author)
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Zhejiang University, Peoples R China; Zhejiang University, Peoples R ChinaSoochow University, Peoples R China
(creator_code:org_t)
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In:Advanced Energy Materials: Wiley-VCH Verlag5:5, s. 1401606-1614-68321614-6840
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Bai, Sai
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Jin, Yizheng
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Liang, Xiaoyong
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Ye, Zhizhen
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Wu, Zhongwei
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Sun, Baoquan
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Ma, Zaifei
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Tang, Zheng
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Wang, Jianpu
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Wuerfel, Uli
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Gao, Feng
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Zhang, Fengling
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Linköping University