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

Direct link
Cite
Citation style
  • apa
  • 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
Reduced Nonradiative Voltage Loss in Terpolymer Solar Cells
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-5276-7172
Chalmers Univ Technol, Sweden; Addis Ababa Univ, Ethiopia; Wollo Univ, Ethiopia.
Chalmers Univ Technol, Sweden.
Chalmers Univ Technol, Sweden.
Show others and affiliations
2020 (English)In: The Journal of Physical Chemistry Letters, E-ISSN 1948-7185, Vol. 11, no 10, p. 3796-3802Article in journal (Refereed) Published
Abstract [en]

The dissociation of hybrid local exciton and charge transfer excitons (LECT) in efficient bulk-heterojunction nonfullerene solar cells contributes to reduced nonradiative photovoltage loss, a mechanism that still remains unclear. Herein we studied the energetic and entropic contribution in the hybrid LE-CT exciton dissociation in devices based on a conjugated terpolymer. Compared with reference devices based on ternary blends, the terpolymer devices demonstrated a significant reduction in the nonradiative photovoltage loss, regardless of the acceptor molecule, be it fullerene or nonfullerene. Fourier transform photocurrent spectroscopy revealed a significant LE-CT character in the terpolymer-based solar cells. Temperature-dependent hole mobility and photovoltage confirm that entropic and energetic effects contribute to the efficient LE-CT dissociation. The energetic disorder value measured in the fullerene- or nonfullerene-based terpolymer devices suggested that this entropic contribution came from the terpolymer, a signature of higher disorder in copolymers with multiple aromatic groups. This gives new insight into the fundamental physics of efficient LE-CT exciton dissociation with smaller nonradiative recombination loss.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2020. Vol. 11, no 10, p. 3796-3802
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-166853DOI: 10.1021/acs.jpclett.0c00915ISI: 000537432500007PubMedID: 32338006Scopus ID: 2-s2.0-85085263563OAI: oai:DiVA.org:liu-166853DiVA, id: diva2:1444638
Note

Funding Agencies|Knut and Alice Wallenberg Foundation (KAW) through a Wallenberg Scholar grant; China Scholarship Council (CSC)China Scholarship Council [201508320244]; International Science Programme (ISP), Uppsala University, Sweden

Available from: 2020-06-22 Created: 2020-06-22 Last updated: 2024-07-04Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Search in DiVA

By author/editor
Bian, QingzhenInganäs, Olle
By organisation
Biomolecular and Organic ElectronicsFaculty of Science & Engineering
In the same journal
The Journal of Physical Chemistry Letters
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 138 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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