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Chemical reviews, 2017-01, Vol.117 (2), p.796-837
2017

Details

Autor(en) / Beteiligte
Titel
Light Harvesting for Organic Photovoltaics
Ist Teil von
  • Chemical reviews, 2017-01, Vol.117 (2), p.796-837
Ort / Verlag
United States: American Chemical Society
Erscheinungsjahr
2017
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
  • The field of organic photovoltaics has developed rapidly over the last 2 decades, and small solar cells with power conversion efficiencies of 13% have been demonstrated. Light absorbed in the organic layers forms tightly bound excitons that are split into free electrons and holes using heterojunctions of electron donor and acceptor materials, which are then extracted at electrodes to give useful electrical power. This review gives a concise description of the fundamental processes in photovoltaic devices, with the main emphasis on the characterization of energy transfer and its role in dictating device architecture, including multilayer planar heterojunctions, and on the factors that impact free carrier generation from dissociated excitons. We briefly discuss harvesting of triplet excitons, which now attracts substantial interest when used in conjunction with singlet fission. Finally, we introduce the techniques used by researchers for characterization and engineering of bulk heterojunctions to realize large photocurrents, and examine the formed morphology in three prototypical blends.
Sprache
Englisch
Identifikatoren
ISSN: 0009-2665, 1520-6890
eISSN: 1520-6890
DOI: 10.1021/acs.chemrev.6b00215
Titel-ID: cdi_pubmedcentral_primary_oai_pubmedcentral_nih_gov_5269644

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