abstract

• The effects of annealing and fullerene loading in regioregular poly(3-hexylthiophene) (P3HT) and 1-(3-methoxycarbonyl)-propyl-1-phenyl- (6,6) C61 (PCBM) based bulk heterojunction photovoltaics have been investigated. Under specific loading and annealing conditions, a combination of morphological and electronic factors can be brought to play to achieve optimal filling factors, open-circuit voltage (Voc), and short-circuit current density (Jsc). We demonstrate that this occurs at surprisingly low loadings of PCBM and annealing temperatures nearing the melting point of the polymer. Further, we report power conversion efficiencies approaching 5%25 in the P3HT:PCBM system. © 2005 American Institute of Physics.

authors

• Carroll D.L.
• Kim K.
• Reyes Reyes Marisol

publication date

• 2005-01-01

funding provided via

• Air Force Office of Scientific Research, AFOSR  Grant
• Wake Forest University, WFU  Grant

published in

• Applied Physics Letters  Journal

keywords

• Open-circuit voltage (Voc); Power conversion; Short-circuit current density (Jsc); Specific loading; Annealing; Current density; Electric potential; Heterojunctions; Short circuit currents; Photovoltaic cells

Digital Object Identifier (DOI)

• 10.1063/1.2006986

start page

end page

volume

• 87

issue

• 8