Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Derya Baran; Michelle S. Vezie; Nicola Gasparini; Florent Deledalle; Jizhong Yao; Bob C. Schroeder; Hugo Bronstein; Tayebeh Ameri; Thomas Kirchartz; Iain McCulloch; Jenny Nelson; Christoph J. Brabec

doi:10.1021/acs.jpcc.5b05709

Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

Derya Baran, Michelle S. Vezie, Nicola Gasparini, Florent Deledalle, Jizhong Yao, Bob C. Schroeder, Hugo Bronstein, Tayebeh Ameri, Thomas Kirchartz, Iain McCulloch, Jenny Nelson, Christoph J. Brabec

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

20 Scopus citations

Abstract

Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).

Original language	English (US)
Pages (from-to)	19668-19673
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	119
Issue number	34
DOIs	https://doi.org/10.1021/acs.jpcc.5b05709
State	Published - Aug 27 2015
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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10.1021/acs.jpcc.5b05709

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Baran, D., Vezie, M. S., Gasparini, N., Deledalle, F., Yao, J., Schroeder, B. C., Bronstein, H., Ameri, T., Kirchartz, T., McCulloch, I., Nelson, J., & Brabec, C. J. (2015). Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells. Journal of Physical Chemistry C, 119(34), 19668-19673. https://doi.org/10.1021/acs.jpcc.5b05709

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title = "Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells",

abstract = "Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).",

author = "Derya Baran and Vezie, {Michelle S.} and Nicola Gasparini and Florent Deledalle and Jizhong Yao and Schroeder, {Bob C.} and Hugo Bronstein and Tayebeh Ameri and Thomas Kirchartz and Iain McCulloch and Jenny Nelson and Brabec, {Christoph J.}",

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Baran, D, Vezie, MS, Gasparini, N, Deledalle, F, Yao, J, Schroeder, BC, Bronstein, H, Ameri, T, Kirchartz, T, McCulloch, I, Nelson, J & Brabec, CJ 2015, 'Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells', Journal of Physical Chemistry C, vol. 119, no. 34, pp. 19668-19673. https://doi.org/10.1021/acs.jpcc.5b05709

TY - JOUR

T1 - Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer

T2 - Fullerene Solar Cells

AU - Baran, Derya

AU - Vezie, Michelle S.

AU - Gasparini, Nicola

AU - Deledalle, Florent

AU - Yao, Jizhong

AU - Schroeder, Bob C.

AU - Bronstein, Hugo

AU - Ameri, Tayebeh

AU - Kirchartz, Thomas

AU - McCulloch, Iain

AU - Nelson, Jenny

AU - Brabec, Christoph J.

PY - 2015/8/27

Y1 - 2015/8/27

N2 - Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).

AB - Nonradiative recombination reduces the open-circuit voltage relative to its theoretical limit and leads to reduced luminescence emission at a given excitation. Therefore, it is possible to correlate changes in luminescence emission with changes in open-circuit voltage and in the charge carrier lifetime. Here we use luminescence studies combined with transient photovoltage and differential charging analyses to study the effect of polymer fractionation in indacenoedithiophene-co-benzothiadiazole (IDTBT):fullerene solar cells. In this system, polymer fractionation increases electroluminescence emission at the same injection current and reduces nonradiative recombination. High-molecular-weight and fractionated IDTBT polymers exhibit higher carrier lifetime-mobility product compared to that of their nonfractionated analogues, resulting in improved solar cell performance. (Graph Presented).

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Role of Polymer Fractionation in Energetic Losses and Charge Carrier Lifetimes of Polymer: Fullerene Solar Cells

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