Increasing Polymer Solar Cell Fill Factor by Trap-Filling with F4-TCNQ at Parts Per Thousand Concentration

Han Yan; Joseph G Manion; Mingjian Yuan; F Pelayo García de Arquer; George R McKeown; Serge Beaupré; Mario Leclerc; Edward H Sargent; Dwight S Seferos

doi:10.1002/adma.201601553

Increasing Polymer Solar Cell Fill Factor by Trap-Filling with F4-TCNQ at Parts Per Thousand Concentration

Adv Mater. 2016 Aug;28(30):6491-6. doi: 10.1002/adma.201601553. Epub 2016 May 12.

Authors

Han Yan¹, Joseph G Manion¹, Mingjian Yuan², F Pelayo García de Arquer², George R McKeown¹, Serge Beaupré³, Mario Leclerc³, Edward H Sargent², Dwight S Seferos¹

Affiliations

¹ Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, M5S 3H6, Canada.
² The Edward S. Rogers Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada.
³ Department of Chemistry, Université Laval, Avenue de la Médecine, Québec City, Québec, G1V 0A6, Canada.

PMID: 27171655
DOI: 10.1002/adma.201601553

Abstract

Intrinsic traps in organic semiconductors can be eliminated by trap-filling with F4-TCNQ. Photovoltaic tests show that devices with F4-TCNQ at parts per thousand concentration outperform control devices due to an improved fill factor. Further studies confirm the trap-filling pathway and demonstrate the general nature of this finding.

Keywords: fill factor; organic solar cells; trap-assisted recombination; trap-filling.