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

H. Löslein; T. Ameri; G.J. Matt; M. Koppe; H.J. Egelhaaf; A. Troeger; V. Sgobba; D.M. Guldi; C.J. Brabec

doi:10.1002/marc.201300354

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

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

School of Engineering

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

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.

Original language	English
Pages (from-to)	1090-1097
Number of pages	8
Journal	Macromolecular Rapid Communications
Volume	34
Issue number	13
DOIs	https://doi.org/10.1002/marc.201300354
Publication status	Published - 2013

Keywords / Materials (for Non-textual outputs)

Bulk heterojunction
Light-harvesting
Low-bandgap polymers
Operation mechanism
Organic electronics
Organic solar cell
Polymer-based solar cells
Transient absorption spectroscopies
Conjugated polymers
Energy gap
Fullerenes
Heterojunctions
Photochemical reactions
Polarons
Solar cells
Thin films
Polymer films
fullerene derivative
polymer
polythiophene
thiophene derivative
article
chemistry
conjugated polymers
electrochemical analysis
organic electronics
photochemistry
polymerization
solar cells
solar energy
spectroscopy
thin films
Electrochemical Techniques
Polymerization
Polymers
Solar Energy
Spectrum Analysis
Thiophenes

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

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

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 {\textcopyright} 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

keywords = "Bulk heterojunction, Light-harvesting, Low-bandgap polymers, Operation mechanism, Organic electronics, Organic solar cell, Polymer-based solar cells, Transient absorption spectroscopies, Conjugated polymers, Energy gap, Fullerenes, Heterojunctions, Photochemical reactions, Polarons, Solar cells, Thin films, Polymer films, fullerene derivative, polymer, polythiophene, thiophene derivative, article, chemistry, conjugated polymers, electrochemical analysis, organic electronics, photochemistry, polymerization, solar cells, solar energy, spectroscopy, thin films, Electrochemical Techniques, Polymerization, Polymers, Solar Energy, Spectrum Analysis, Thiophenes",

author = "H. L{\"o}slein and T. Ameri and G.J. Matt and M. Koppe and H.J. Egelhaaf and A. Troeger and V. Sgobba and D.M. Guldi and C.J. Brabec",

note = "cited By 23",

year = "2013",

doi = "10.1002/marc.201300354",

language = "English",

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pages = "1090--1097",

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AU - Löslein, H.

AU - Ameri, T.

AU - Matt, G.J.

AU - Koppe, M.

AU - Egelhaaf, H.J.

AU - Troeger, A.

AU - Sgobba, V.

AU - Guldi, D.M.

AU - Brabec, C.J.

N1 - cited By 23

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

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KW - Light-harvesting

KW - Low-bandgap polymers

KW - Operation mechanism

KW - Organic electronics

KW - Organic solar cell

KW - Polymer-based solar cells

KW - Transient absorption spectroscopies

KW - Conjugated polymers

KW - Energy gap

KW - Fullerenes

KW - Heterojunctions

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KW - Polarons

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KW - electrochemical analysis

KW - organic electronics

KW - photochemistry

KW - polymerization

KW - solar cells

KW - solar energy

KW - spectroscopy

KW - thin films

KW - Electrochemical Techniques

KW - Polymerization

KW - Polymers

KW - Solar Energy

KW - Spectrum Analysis

KW - Thiophenes

U2 - 10.1002/marc.201300354

DO - 10.1002/marc.201300354

M3 - Article

SN - 1022-1336

VL - 34

SP - 1090

EP - 1097

JO - Macromolecular Rapid Communications

JF - Macromolecular Rapid Communications

IS - 13

ER -

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

Abstract

Keywords / Materials (for Non-textual outputs)

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