Charge carrier generation and exciton quenching at M3EH-PPV/small-molecule and M3EH-PPV/oxide interfaces

Author

Brown, K.E. ; Breeze, A.J. ; Rumbles, G. ; Gregg, B.A. ; Parilla, P.A. ; Perkins, J.D. ; Tillman, H. ; Hörhold, H.H. ; Ginley, D.S.

Author_Institution

Dept. of Phys., Colorado Sch. of Mines, Golden, CO, USA

fYear

2002

fDate

19-24 May 2002

Firstpage

1186

Lastpage

1189

Abstract

The need for efficient exciton dissociation is one of the most important factors limiting improved efficiencies in organic photovoltaic devices. Using luminescence as a probe, we studied the quenching of excitons in semiconducting polymers for a variety of quenching materials, including transparent conducting oxides (TCOs) and small molecule perylene diimide thin films. Perylene benzimidazole (PBI) is shown to be the best quencher of those studied. This result is consistent with the improved conversion efficiencies demonstrated when this material is used in a polymer bilayer photovoltaic device.

Keywords

conducting polymers; excitons; organic semiconductors; photovoltaic effects; radiation quenching; solar cells; M3EH-PPV/oxide interfaces; M3EH-PPV/small-molecule interface; PBI; TCOs; charge carrier generation; conversion efficiency; efficiency; exciton dissociation; exciton quenching; organic photovoltaic devices; perylene benzimidazole; polymer bilayer photovoltaic device; semiconducting polymers; small molecule perylene diimide thin films; transparent conducting oxides; Charge carriers; Conducting materials; Excitons; Luminescence; Photovoltaic systems; Polymer films; Probes; Semiconductivity; Semiconductor materials; Solar power generation;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 2002. Conference Record of the Twenty-Ninth IEEE

ISSN

1060-8371

Print_ISBN

0-7803-7471-1

Type

conf

DOI

10.1109/PVSC.2002.1190819

Filename

1190819