liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Simultaneously Achieved High Open-Circuit Voltage and Efficient Charge Generation by Fine-Tuning Charge-Transfer Driving Force in Nonfullerene Polymer Solar Cells
Natl Ctr Nanosci and Technol, Peoples R China.
Natl Ctr Nanosci and Technol, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2582-1740
Show others and affiliations
2018 (English)In: Advanced Functional Materials, ISSN 1616-301X, E-ISSN 1616-3028, Vol. 28, no 6, article id 1704507Article in journal (Refereed) Published
Abstract [en]

To maximize the short-circuit current density (J(SC)) and the open circuit voltage (V-OC) simultaneously is a highly important but challenging issue in organic solar cells (OSCs). In this study, a benzotriazole-based p-type polymer (J61) and three benzotriazole-based nonfullerene small molecule acceptors (BTA1-3) are chosen to investigate the energetic driving force for the efficient charge transfer. The lowest unoccupied molecular orbital (LUMO) energy levels of small molecule acceptors can be fine-tuned by modifying the end-capping units, leading to high V-OC (1.15-1.30 V) of OSCs. Particularly, the LUMO energy level of BTA3 satisfies the criteria for efficient charge generation, which results in a high V-OC of 1.15 V, nearly 65% external quantum efficiency, and a high power conversion efficiency (PCE) of 8.25%. This is one of the highest V-OC in the high-performance OSCs reported to date. The results imply that it is promising to achieve both high J(SC) and V-OC to realize high PCE with the carefully designed nonfullerene acceptors.

Place, publisher, year, edition, pages
WILEY-V C H VERLAG GMBH , 2018. Vol. 28, no 6, article id 1704507
Keywords [en]
benzotriazole; charge generation; driving force; nonfullerene acceptor; voltage loss
National Category
Other Physics Topics
Identifiers
URN: urn:nbn:se:liu:diva-145236DOI: 10.1002/adfm.201704507ISI: 000424152900004OAI: oai:DiVA.org:liu-145236DiVA, id: diva2:1188349
Note

Funding Agencies|National Key Research and Development Program of China [2017YFA0206600]; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSW-SLH033]; National Natural Science Foundation of China [51673048, 51473040, 21602040]; National Natural Science Foundation of Beijing [2162045]

Available from: 2018-03-07 Created: 2018-03-07 Last updated: 2018-04-13

Open Access in DiVA

The full text will be freely available from 2018-12-07 10:14
Available from 2018-12-07 10:14

Other links

Publisher's full text

Search in DiVA

By author/editor
Wang, YumingGao, Feng
By organisation
Biomolecular and Organic ElectronicsFaculty of Science & Engineering
In the same journal
Advanced Functional Materials
Other Physics Topics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 109 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf