Roles of Au and Ag nanoparticles in efficiency enhancement of poly(3-octylthiophene)/C 60 bulk heterojunction photovoltaic devices

Kyungkon Kim; David L. Carroll

doi:10.1063/1.2128062

Roles of Au and Ag nanoparticles in efficiency enhancement of poly(3-octylthiophene)/C ₆₀ bulk heterojunction photovoltaic devices

Kyungkon Kim, David L. Carroll

Department of Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

168 Scopus citations

Abstract

We obtained improved poly(3-octylthiophene) (P3OT)/ C60 bulk heterojunction photovoltaic devices by doping with stable and highly electrically conductive Au and Ag nanoparticles. Doped devices showed 50-70% improved efficiency, with the Ag nanoparticles exhibiting the greatest increase in efficiency. We suggest that a dominate mechanism for the efficiency enhancement of doped photovoltaic device is the improved electrical conductivity through the introduction of "dopant" levels within the band gap of the P3OT.

Original language	English
Article number	203113
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics Letters
Volume	87
Issue number	20
DOIs	https://doi.org/10.1063/1.2128062
State	Published - 14 Nov 2005

Bibliographical note

Funding Information:
This work was supported at Wake Forest University by the Air Force Office of Sponsored Research ( AFOSR) under Grant No. FA9550-04-1-0161.

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10.1063/1.2128062

Cite this

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abstract = "We obtained improved poly(3-octylthiophene) (P3OT)/ C60 bulk heterojunction photovoltaic devices by doping with stable and highly electrically conductive Au and Ag nanoparticles. Doped devices showed 50-70\% improved efficiency, with the Ag nanoparticles exhibiting the greatest increase in efficiency. We suggest that a dominate mechanism for the efficiency enhancement of doped photovoltaic device is the improved electrical conductivity through the introduction of {"}dopant{"} levels within the band gap of the P3OT.",

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AB - We obtained improved poly(3-octylthiophene) (P3OT)/ C60 bulk heterojunction photovoltaic devices by doping with stable and highly electrically conductive Au and Ag nanoparticles. Doped devices showed 50-70% improved efficiency, with the Ag nanoparticles exhibiting the greatest increase in efficiency. We suggest that a dominate mechanism for the efficiency enhancement of doped photovoltaic device is the improved electrical conductivity through the introduction of "dopant" levels within the band gap of the P3OT.

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