Transient absorption spectroscopy studies on polythiophene-fullerene bulk heterojunction organic blend films sensitized with a low-bandgap polymer

Löslein H, Ameri T, Matt G, Koppe M, Egelhaaf HJ, Troeger A, Sgobba V, Guldi DM, Brabec C (2013)

Publication Type: Journal article, Original article

Publication year: 2013

Journal

Macromolecular Rapid Communications Wiley-VCH Verlag

Original Authors: Löslein H., Ameri T., Matt G.J., Koppe M., Egelhaaf H.J., Troeger A., Sgobba V., Guldi D.M., Brabec C.J.

Publisher: Wiley-VCH Verlag

Book Volume: 34

Pages Range: 1090-1097

Journal Issue: 13

DOI: 10.1002/marc.201300354

Abstract

Recently, the concept of near-infrared sensitization is successfully employed to increase the light harvesting in large-bandgap polymer-based solar cells. To gain deeper insights into the operation mechanism of ternary organic solar cells, a comprehensive understanding of charge transfer-charge transport in ternary blends is a necessity. Herein, P3HT:PCPDTBT:PCBM ternary blend films are investigated by transient absorption spectroscopy. Hole transfer from PCPDTBT-positive polarons to P3HT in the P3HT:PCPDTBT:PCBM 0.9:0.1:1 blend film can be visualized. This process evolves within 140 ps and is discussed with respect to the proposed charge-generation mechanisms. Polythiophene-fullerene bulk heterojunction ternary blend films are investigated by transient absorption spectroscopy. Hole transfer from PCPDTBT-positive polarons to P3HT in the blend film can be visualized. This process evolves within 140 ps and is discussed with respect to the proposed charge-generation mechanisms. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Authors with CRIS profile

Heiko Löslein Institute Materials for Electronics and Energy Technology (i-MEET) Tayebeh Ameri Institute Materials for Electronics and Energy Technology (i-MEET) Gebhard Matt Institute Materials for Electronics and Energy Technology (i-MEET) Anna Troeger Lehrstuhl für Physikalische Chemie I Vito Sgobba Lehrstuhl für Physikalische Chemie I Dirk Michael Guldi Lehrstuhl für Physikalische Chemie I Christoph Brabec Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Konarka Austria Forschungs und Entwicklungs GmbH AT Austria (AT) Johannes Kepler Universität (JKU) Linz AT Austria (AT)

How to cite

APA:

Löslein, H., Ameri, T., Matt, G., Koppe, M., Egelhaaf, H.J., Troeger, A.,... Brabec, C. (2013). Transient absorption spectroscopy studies on polythiophene-fullerene bulk heterojunction organic blend films sensitized with a low-bandgap polymer. Macromolecular Rapid Communications, 34(13), 1090-1097. https://doi.org/10.1002/marc.201300354

MLA:

Löslein, Heiko, et al. "Transient absorption spectroscopy studies on polythiophene-fullerene bulk heterojunction organic blend films sensitized with a low-bandgap polymer." Macromolecular Rapid Communications 34.13 (2013): 1090-1097.

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