Search: id:"swepub:oai:lup.lub.lu.se:e66a35b3-1fc2-4db1-9a21-6089c1f05206" >
Sandwiched confinem...
Sandwiched confinement of quantum dots in graphene matrix for efficient electron transfer and photocurrent production.
- Article/chapterEnglish2015
Publisher, publication year, extent ...
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2015-05-21
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Springer Science and Business Media LLC,2015
Numbers
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LIBRIS-ID:oai:lup.lub.lu.se:e66a35b3-1fc2-4db1-9a21-6089c1f05206
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https://lup.lub.lu.se/record/5442718URI
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https://doi.org/10.1038/srep09860DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Quantum dots (QDs) and graphene are both promising materials for the development of new-generation optoelectronic devices. Towards this end, synergic assembly of these two building blocks is a key step but remains a challenge. Here, we show a one-step strategy for organizing QDs in a graphene matrix via interfacial self-assembly, leading to the formation of sandwiched hybrid QD-graphene nanofilms. We have explored structural features, electron transfer kinetics and photocurrent generation capacity of such hybrid nanofilms using a wide variety of advanced techniques. Graphene nanosheets interlink QDs and significantly improve electronic coupling, resulting in fast electron transfer from photoexcited QDs to graphene with a rate constant of 1.3 × 10(9) s(-1). Efficient electron transfer dramatically enhances photocurrent generation in a liquid-junction QD-sensitized solar cell where the hybrid nanofilm acts as a photoanode. We thereby demonstrate a cost-effective method to construct large-area QD-graphene hybrid nanofilms with straightforward scale-up potential for optoelectronic applications.
Subject headings and genre
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Zheng, KaiboLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-kbz
(author)
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Karki, Khadga JungLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-kdk
(author)
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Qenawy, MohamedLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-mea
(author)
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Zhu, QiushiLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-qzu
(author)
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Carlson, StefanLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)inor-sca
(author)
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Haase, DörtheLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)maxl-deh
(author)
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Zidek, KarelLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chem-kzd
(author)
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Ulstrup, Jens
(author)
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Canton, SophieLund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory(Swepub:lu)chem-sca
(author)
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Pullerits, TönuLund University,Lunds universitet,Kemisk fysik,Enheten för fysikalisk och teoretisk kemi,Kemiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Chemical Physics,Physical and theoretical chemistry,Department of Chemistry,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)chph-tp
(author)
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Chi, Qijin
(author)
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Kemisk fysikEnheten för fysikalisk och teoretisk kemi
(creator_code:org_t)
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In:Scientific Reports: Springer Science and Business Media LLC52045-2322
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Zhu, Nan
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Zheng, Kaibo
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Karki, Khadga Ju ...
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Qenawy, Mohamed
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Zhu, Qiushi
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Carlson, Stefan
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Haase, Dörthe
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Zidek, Karel
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Ulstrup, Jens
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Canton, Sophie
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Pullerits, Tönu
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Chi, Qijin
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Lund University