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Autor(en) / Beteiligte
Titel
Benzochalcogenodiazole-Based Donor-Acceptor-Acceptor Molecular Donors for Organic Solar Cells
Ist Teil von
  • ChemSusChem, 2014-02, Vol.7 (2), p.457-465
Ort / Verlag
Weinheim: WILEY-VCH Verlag
Erscheinungsjahr
2014
Quelle
Wiley Online Library - AutoHoldings Journals
Beschreibungen/Notizen
  • Four new molecules with a donor–acceptor–acceptor (D‐A‐A) configuration, in which 2,1,3‐benzoxadiazole or 2,1,3‐benzoselenodiazole were adopted as the central bridging acceptor, were synthesized as electron donors for small‐molecule organic solar cells. In conjunction with two previously reported 2,1,3‐benzothiadiazole‐based compounds, the influences of the benzochalcogenodiazole acceptor unit and the ditolylarylamine donor moiety on the molecular structure, electrochemical behavior, and optical properties of the materials were investigated systematically to obtain a clear structure–property relationship. Vacuum‐deposited hybrid planar mixed‐heterojunction devices fabricated with the new donors and C70 as the acceptor showed power conversion efficiencies in the range of 2.9–4.3 % under 1 sun (100 mW cm−2) AM 1.5 G simulated solar illumination. The current density–voltage characteristics of solar cells at various light intensities were measured, which revealed a high bimolecular recombination. Put a chalcogen in it: Four new molecules with a donor–acceptor–acceptor configuration in which 2,1,3‐benzoxadiazole or 2,1,3‐benzoselenodiazole are adopted as the central bridging acceptor are synthesized as electron donors for small‐molecule organic solar cells.
Sprache
Englisch
Identifikatoren
ISSN: 1864-5631
eISSN: 1864-564X
DOI: 10.1002/cssc.201301090
Titel-ID: cdi_proquest_miscellaneous_1494305198

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