A structure-property-performance investigation of perylenediimides as electron accepting materials in organic solar cells.

TitleA structure-property-performance investigation of perylenediimides as electron accepting materials in organic solar cells.
Publication TypeJournal Article
Year of Publication2013
AuthorsGuide M, Pla S, Sharenko A, Zalar P, Fernández-Lázaro F, Sastre-Santos A, Nguyen T‐Q
JournalPhysical Chemistry Chemical Physics
Volume15
Pagination18894–18899
Date Publishedoct
ISSN1463-9084
KeywordsCPOS, CSC, DOE, Dreyfus, GSR, IGERT, MCCAM, Nguyen, Sloan Foundation, SSRL, Wudl
Abstract

Solution-processed perylenediimides (PDIs) with varying peri and bay substituents are characterized in order to better understand the relationships between molecular structure, solid state order, charge transport, and photovoltaic performance. It was found that bulky bay substituents interfere with molecular packing, leading to low charge transport and photovoltaic efficiencies compared to PDIs with fewer or less disruptive substituents. We assessed the potential of PDIs as acceptors for organic photovoltaics (OPVs) by utilizing a solution-processed bilayer OPV device architecture with the donor benzoporphyrin. At AM1.5G illumination, power conversion efficiencies (PCEs) up to 2.0{%} are obtained for solution-processed bilayer OPVs employing PDIs as acceptors. These results demonstrate the potential of PDIs as photovoltaic acceptor materials while elucidating the relationships between molecular structure and material properties.

URLhttp://pubs.rsc.org/en/content/articlehtml/2013/cp/c3cp53552e
DOI10.1039/c3cp53552e
Grant: 
CSC