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Article: Diketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavior

TitleDiketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavior
Authors
KeywordsConversion Efficiency
Copolymerization
Copolymers
Energy Gap
Heterojunctions
Nanostructured Materials
Nitrogen Compounds
Open Circuit Voltage
Solar Power Generation
Issue Date2011
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/
Citation
Journal Of Physical Chemistry C, 2011, v. 115 n. 22, p. 11282-11292 How to Cite?
AbstractTwo diketo-pyrrolo-pyrrole-based donor-acceptor copolymers, PCPDT-PDPP and PDTP-PDPP, were synthesized and applied as p-type component for bulk heterojunction solar cells. Using a facile molecular engineering of the main chain linking bridge, we have successfully tuned the band gap of the materials from low to medium level, which results in an improved balance between the device open circuit voltage and short circuit current. The power conversion efficiencies of the polymer/PC 70BM combinations achieve 2.03% (PCPDT-PDPP) and 1.32% (PDTP-PDPP) without any interface engineering or post-treatment. A totally different composition-dependent photovoltaic behavior was also discovered for each of the two materials, although they share similar donor-acceptor (D-A) structure. Morphological and photophysical studies reveal a phase structure dominated, light harvesting subordinated mechanism, in which some nonkernel molecular level factors, such as the branch chain density and the molecular weight, are found to play important roles. © 2011 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/141691
ISSN
2014 Impact Factor: 4.772
ISI Accession Number ID
Funding AgencyGrant Number
National Natural Science Foundation of China50990063
20774083
51011130028
HKSAR Research Grant CouncilPolyU 5117/09E
PolyU 5112/08E
Funding Information:

We wish to thank the National Natural Science Foundation of China (Grants 50990063, 20774083, and 51011130028) and the HKSAR Research Grant Council (Grants, PolyU 5117/09E and PolyU 5112/08E) for financial support.

References

 

DC FieldValueLanguage
dc.contributor.authorChen, Len_HK
dc.contributor.authorDeng, Den_HK
dc.contributor.authorNan, Yen_HK
dc.contributor.authorShi, Men_HK
dc.contributor.authorChan, PKLen_HK
dc.contributor.authorChen, Hen_HK
dc.date.accessioned2011-09-27T02:58:14Z-
dc.date.available2011-09-27T02:58:14Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Physical Chemistry C, 2011, v. 115 n. 22, p. 11282-11292en_HK
dc.identifier.issn1932-7447en_HK
dc.identifier.urihttp://hdl.handle.net/10722/141691-
dc.description.abstractTwo diketo-pyrrolo-pyrrole-based donor-acceptor copolymers, PCPDT-PDPP and PDTP-PDPP, were synthesized and applied as p-type component for bulk heterojunction solar cells. Using a facile molecular engineering of the main chain linking bridge, we have successfully tuned the band gap of the materials from low to medium level, which results in an improved balance between the device open circuit voltage and short circuit current. The power conversion efficiencies of the polymer/PC 70BM combinations achieve 2.03% (PCPDT-PDPP) and 1.32% (PDTP-PDPP) without any interface engineering or post-treatment. A totally different composition-dependent photovoltaic behavior was also discovered for each of the two materials, although they share similar donor-acceptor (D-A) structure. Morphological and photophysical studies reveal a phase structure dominated, light harvesting subordinated mechanism, in which some nonkernel molecular level factors, such as the branch chain density and the molecular weight, are found to play important roles. © 2011 American Chemical Society.en_HK
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journals/jpccck/en_HK
dc.relation.ispartofJournal of Physical Chemistry Cen_HK
dc.subjectConversion Efficiencyen_US
dc.subjectCopolymerizationen_US
dc.subjectCopolymersen_US
dc.subjectEnergy Gapen_US
dc.subjectHeterojunctionsen_US
dc.subjectNanostructured Materialsen_US
dc.subjectNitrogen Compoundsen_US
dc.subjectOpen Circuit Voltageen_US
dc.subjectSolar Power Generationen_US
dc.titleDiketo-pyrrolo-pyrrole-based medium band gap copolymers for efficient plastic solar cells: Morphology, transport, and composition-dependent photovoltaic behavioren_HK
dc.typeArticleen_HK
dc.identifier.emailChan, PKL:pklc@hku.hken_HK
dc.identifier.authorityChan, PKL=rp01532en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/jp201104sen_HK
dc.identifier.scopuseid_2-s2.0-79958748184en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79958748184&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume115en_HK
dc.identifier.issue22en_HK
dc.identifier.spage11282en_HK
dc.identifier.epage11292en_HK
dc.identifier.eissn1932-7455-
dc.identifier.isiWOS:000291079900043-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, L=35797917300en_HK
dc.identifier.scopusauthoridDeng, D=35798265600en_HK
dc.identifier.scopusauthoridNan, Y=36198634800en_HK
dc.identifier.scopusauthoridShi, M=7201371015en_HK
dc.identifier.scopusauthoridChan, PKL=35742829700en_HK
dc.identifier.scopusauthoridChen, H=35228831300en_HK

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