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
Comparing the device physics, dynamics and morphology of polymer solar cells employing conventional PCBM and non-fullerene polymer acceptor N2200
Soochow University, Peoples R China.
Fudan University, Peoples R China.
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.
University of Calif Santa Barbara, CA 93106 USA; University of Calif Santa Barbara, CA 93106 USA.
Show others and affiliations
2017 (English)In: Nano Energy, ISSN 2211-2855, E-ISSN 2211-3282, Vol. 35, 251-262 p.Article in journal (Refereed) Published
Abstract [en]

Current all polymer solar cells still suffer from low fill factors (FF) and short-circuit current density (J(sc)) compared with the conventional polymer/fullerene system. Herein in this work, devices using PTP8 as the electron donor and [70]PCBM as well as widely used polymer N2200 as the electron acceptor were systematically studied and compared. The major loss mechanisms in the all polymer solar cells were investigated to understand their relatively lower performance than the PTP8/fullerene system. By performing in-depth analysis on ultrafast transient transmission spectroscopy results, we estimated that in PTP8/N2200 device nearly half of the charges recombine geminately, which is confirmed as the major factor hindering the device performance of all polymer solar cells compared with polymer/fullerene system. Through thorough morphology analysis, the low charge generation efficiency is attributed to the reduced crystallinity of N2200 in the blend film and the unfavorable face-to-edge orientation at the donor/acceptor heterojunction. Coupling these results with knowledge from efficient polymer/fullerene systems, the future design of new polymers can devote to increase the attraction between the pi face of donor and acceptor, leading to enhanced face-to-face orientation at the heterojunction, while maintaining a high pi-pi stacking order for each polymer.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2017. Vol. 35, 251-262 p.
Keyword [en]
All-polymer solar cells; Geminate recombination; Energy loss; Morphology; Orientation
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-137601DOI: 10.1016/j.nanoen.2017.03.050ISI: 000400647900029OAI: oai:DiVA.org:liu-137601DiVA: diva2:1097370
Note

Funding Agencies|U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]; National Natural Science Foundation of China [61222401, 61674111]; National Key Research Projects [2016YFA0202402]

Available from: 2017-05-22 Created: 2017-05-22 Last updated: 2017-05-22

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Xia, YuxinInganäs, Olle
By organisation
Biomolecular and Organic ElectronicsFaculty of Science & Engineering
In the same journal
Nano Energy
Materials Chemistry

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 223 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