Charge transfer state in highly efficient polymer-fullerene bulk heterojunction solar cells

Claudia Piliego, Maria Antonietta Loi*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

85 Citations (Scopus)

Abstract

In recent years, steady improvements in organic photovoltaic (OPV) performance have been reported with power conversion efficiency (PCE) reaching 9%. Despite this rapid improvement, the mechanisms limiting the existing performance are not completely known; therefore a better understanding of the loss processes is necessary. In this respect a crucial role may be played by the charge transfer (CT) state, which is the intermediate state between the excitons and the fully dissociated charges. In this review article we outline the dynamics of this intermediate state in light of their influence on the photovoltaic performance, with central emphasis on highly efficient polymer-fullerene bulk heterojunction solar cells.

Original languageEnglish
Pages (from-to)4141-4150
Number of pages10
JournalJournal of Materials Chemistry
Volume22
Issue number10
DOIs
Publication statusPublished - 2012

Keywords

  • OPEN-CIRCUIT VOLTAGE
  • LOW-BANDGAP POLYMER
  • TRANSFER EXCITONS
  • BLEND FILMS
  • PHOTOVOLTAIC DEVICES
  • PROCESSING ADDITIVES
  • ELECTRON-TRANSFER
  • PERFORMANCE
  • ABSORPTION
  • GENERATION

Cite this