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Optimizing performance in photovoltaic devices based on conjugated poly(phenylene vinylenes)

Warren, Jeremy T.
http://rave.ohiolink.edu/etdc/view?acc_num=akron1144257019

Abstract Details

2006, Doctor of Philosophy, University of Akron, Polymer Science.
A comprehensive model for understanding and optimizing the rate of charge transfer in non-fullerene based polymer photovoltaic (PV) devices has been designed, developed, and implemented. Solution fluorescence quenching experiments involving a series of electron donors and electron acceptor molecules were first used to gather the data used to build the model. The validity of the model was then tested by constructing a series of PV devices, using the combinations of conjugated poly(alkoxy-phenylene vinylene) (PPV) donors and acceptors used in the solution fluorescence quenching experiments. The device results clearly indicate that in non-fullerene polymer PV devices, short circuit current output is limited by the rate of charge transfer. The results also correlate with the model obtained from the fluorescence quenching results obtained in solution. The model suggests that when acting as an electron donor (as in the case of a PV device), a PPV must be coupled with an electron acceptor with a ground state oxidation potential of +0.3 V versus the Neutral Hydrogen Electrode (NHE). If the PPV acts as an electron acceptor (which is the case when it is used in an organic LED), the ground state reduction potential of the electron donor paired with the PPV should be +0.4 V versus NHE. It is at these points that optimal charge transfer occurs, leading to the greatest observed short circuit current (Isc). This has important consequences in the design of new acceptors for non-fullerene systems.
Frank Harris (Advisor)
325 p.
photovoltaics; charge transfer; Marcus theory

Recommended Citations

Citations

  • Warren, J. T. (2006). Optimizing performance in photovoltaic devices based on conjugated poly(phenylene vinylenes) [Doctoral dissertation, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1144257019

    APA Style (7th edition)

  • Warren, Jeremy. Optimizing performance in photovoltaic devices based on conjugated poly(phenylene vinylenes). 2006. University of Akron, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1144257019.

    MLA Style (8th edition)

  • Warren, Jeremy. "Optimizing performance in photovoltaic devices based on conjugated poly(phenylene vinylenes)." Doctoral dissertation, University of Akron, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1144257019

    Chicago Manual of Style (17th edition)

akron1144257019
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© 2006, all rights reserved.
This open access ETD is published by University of Akron and OhioLINK.