Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/ Ti O2 solar cells

T. Ishwara; D. D.C. Bradley; J. Nelson; P. Ravirajan; I. Vanseveren; T. Cleij; D. Vanderzande; L. Lutsen; S. Tierney; M. Heeney; I. McCulloch

doi:10.1063/1.2840608

Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/ Ti O2 solar cells

T. Ishwara, D. D.C. Bradley, J. Nelson, P. Ravirajan, I. Vanseveren, T. Cleij, D. Vanderzande, L. Lutsen, S. Tierney, M. Heeney, I. McCulloch

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41 Scopus citations

Abstract

We report studies of the dependence of the open-circuit voltage (VOC) of polymer/titanium dioxide hybrid devices on the ionization potential of the polymer (IP). Once corrected for differences in photocarrier generation by the polymers, the measured VOC values vary linearly with the polymer IP, with a slope of 0.8±0.1. This behavior agrees with recent studies of polymer/fullerene photovoltaic devices and is consistent with the hypothesis that VOC of an organic donor-acceptor solar cell is limited by the energy difference between the highest occupied molecular orbital of the donor (in this case, the polymer) and the lowest unoccupied electronic level of the acceptor (in this case, the conduction band edge of the Ti O2). © 2008 American Institute of Physics.

Original language	English (US)
Journal	Applied Physics Letters
Volume	92
Issue number	5
DOIs	https://doi.org/10.1063/1.2840608
State	Published - Feb 15 2008
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.2840608

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title = "Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/ Ti O2 solar cells",

abstract = "We report studies of the dependence of the open-circuit voltage (VOC) of polymer/titanium dioxide hybrid devices on the ionization potential of the polymer (IP). Once corrected for differences in photocarrier generation by the polymers, the measured VOC values vary linearly with the polymer IP, with a slope of 0.8±0.1. This behavior agrees with recent studies of polymer/fullerene photovoltaic devices and is consistent with the hypothesis that VOC of an organic donor-acceptor solar cell is limited by the energy difference between the highest occupied molecular orbital of the donor (in this case, the polymer) and the lowest unoccupied electronic level of the acceptor (in this case, the conduction band edge of the Ti O2). {\textcopyright} 2008 American Institute of Physics.",

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T1 - Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/ Ti O2 solar cells

AU - Ishwara, T.

AU - Bradley, D. D.C.

AU - Nelson, J.

AU - Ravirajan, P.

AU - Vanseveren, I.

AU - Cleij, T.

AU - Vanderzande, D.

AU - Lutsen, L.

AU - Tierney, S.

AU - Heeney, M.

AU - McCulloch, I.

N1 - Generated from Scopus record by KAUST IRTS on 2023-02-14

PY - 2008/2/15

Y1 - 2008/2/15

N2 - We report studies of the dependence of the open-circuit voltage (VOC) of polymer/titanium dioxide hybrid devices on the ionization potential of the polymer (IP). Once corrected for differences in photocarrier generation by the polymers, the measured VOC values vary linearly with the polymer IP, with a slope of 0.8±0.1. This behavior agrees with recent studies of polymer/fullerene photovoltaic devices and is consistent with the hypothesis that VOC of an organic donor-acceptor solar cell is limited by the energy difference between the highest occupied molecular orbital of the donor (in this case, the polymer) and the lowest unoccupied electronic level of the acceptor (in this case, the conduction band edge of the Ti O2). © 2008 American Institute of Physics.

AB - We report studies of the dependence of the open-circuit voltage (VOC) of polymer/titanium dioxide hybrid devices on the ionization potential of the polymer (IP). Once corrected for differences in photocarrier generation by the polymers, the measured VOC values vary linearly with the polymer IP, with a slope of 0.8±0.1. This behavior agrees with recent studies of polymer/fullerene photovoltaic devices and is consistent with the hypothesis that VOC of an organic donor-acceptor solar cell is limited by the energy difference between the highest occupied molecular orbital of the donor (in this case, the polymer) and the lowest unoccupied electronic level of the acceptor (in this case, the conduction band edge of the Ti O2). © 2008 American Institute of Physics.

UR - http://aip.scitation.org/doi/10.1063/1.2840608

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

ER -

Influence of polymer ionization potential on the open-circuit voltage of hybrid polymer/ Ti O2 solar cells

Abstract

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