The effect of poly(3-hexylthiophene) molecular weight on charge transport and the performance of polymer: Fullerene solar cells

Amy M. Ballantyne; Lichun Chen; Justin Dane; Thomas Hammant; Felix M. Braun; Martin Heeney; Warren Duffy; Iain McCulloch; Donal D.C. Bradley; Jenny Nelson

doi:10.1002/adfm.200800145

The effect of poly(3-hexylthiophene) molecular weight on charge transport and the performance of polymer: Fullerene solar cells

Amy M. Ballantyne, Lichun Chen, Justin Dane, Thomas Hammant, Felix M. Braun, Martin Heeney, Warren Duffy, Iain McCulloch, Donal D.C. Bradley, Jenny Nelson

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

249 Scopus citations

Abstract

The time-of-flight method has been used to study the effect of P3HT molecular weight (Mn = 13-121 kDa) on charge mobility in pristine and PCBM blend films using highly regioregular P3HT. Hole mobility was observed to remain constant at 10-4cm2V-1 s-1 as molecular weight was increased from 13-18 kDa, but then decreased by one order of magnitude as molecular weight was further increased from 34-121 kDa. The decrease in charge mobility observed in blend films is accompanied by a change in surface morphology, and leads to a decrease in the performance of photovoltaic devices made from these blend films. © 2008 WILEY-VCH Verlag GmbH & Co. KGaA.

Original language	English (US)
Pages (from-to)	2373-2380
Number of pages	8
Journal	Advanced Functional Materials
Volume	18
Issue number	16
DOIs	https://doi.org/10.1002/adfm.200800145
State	Published - Aug 22 2008
Externally published	Yes

ASJC Scopus subject areas

Biomaterials
Electrochemistry
Electronic, Optical and Magnetic Materials
Condensed Matter Physics

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/adfm.200800145

Cite this

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abstract = "The time-of-flight method has been used to study the effect of P3HT molecular weight (Mn = 13-121 kDa) on charge mobility in pristine and PCBM blend films using highly regioregular P3HT. Hole mobility was observed to remain constant at 10-4cm2V-1 s-1 as molecular weight was increased from 13-18 kDa, but then decreased by one order of magnitude as molecular weight was further increased from 34-121 kDa. The decrease in charge mobility observed in blend films is accompanied by a change in surface morphology, and leads to a decrease in the performance of photovoltaic devices made from these blend films. {\textcopyright} 2008 WILEY-VCH Verlag GmbH & Co. KGaA.",

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AU - Chen, Lichun

AU - Dane, Justin

AU - Hammant, Thomas

AU - Braun, Felix M.

AU - Heeney, Martin

AU - Duffy, Warren

AU - McCulloch, Iain

AU - Bradley, Donal D.C.

AU - Nelson, Jenny

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The effect of poly(3-hexylthiophene) molecular weight on charge transport and the performance of polymer: Fullerene solar cells

Abstract

ASJC Scopus subject areas

UN SDGs

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