Near-infrared sensitization of polymer/fullerene solar cells: Controlling the morphology and transport in ternary blends

T. Ameri, M. Forster, U. Scherf, C.J. Brabec

Research output: Chapter in Book/Report/Conference proceedingChapter (peer-reviewed)peer-review

Abstract

The concept of near-infrared (NIR) sensitization can be used as an alternative strategy to extend the spectral sensitivity of wide-bandgap polymers in polymer/fullerene solar cells. In ternary systems consisting of a conjugated polymer donor, a fullerene acceptor, and a sensitizer, the fullerene needs to act as an electron acceptor as well as an electron-transport matrix, the polymeric donor should provide a sufficiently high hole mobility, and the sensitizers should sensitize the bulk heterojunction solar cell in the red/NIR region. So far we have used various optoelectrical and structural techniques to investigate the possible mechanisms of the charge transfer and charge transport among the three components and microstructure of the ternary blends. In this review-like chapter, we present our recent achievements on developing the concept of NIR sensitization for polymer/fullerene solar cells by mainly addressing the important aspect of the relationship between morphology and transport. © Springer International Publishing Switzerland 2017.
Original languageEnglish
Title of host publicationElementary Processes in Organic Photovoltaics
PublisherSpringer
Pages311-326
Number of pages16
Volume272
DOIs
Publication statusPublished - 21 Dec 2017

Publication series

NameAdvances in Polymer Science
PublisherSpringer New York LLC

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