Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers: Effect of alkyl chain length

Derya Baran; Abidin Balan; Tobias Stubhan; Tayebeh Ameri; Levent Toppare; Christoph J. Brabec

doi:10.1016/j.synthmet.2012.09.017

Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers: Effect of alkyl chain length

Derya Baran^*, Abidin Balan, Tobias Stubhan, Tayebeh Ameri, Levent Toppare, Christoph J. Brabec

^*Corresponding author for this work

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

15 Scopus citations

Abstract

A series of variable alkyl chain length substituted donor-acceptor (D-A) conjugated polymers with thiophene ring as the donor and benzotriazole moiety as the acceptor has been investigated in bulk heterojunction solar cells. The optical and electrochemical properties showed that the absorption onsets and the energy levels of the copolymers were not affected by alkyl substitution revealing 1.9 eV of optical band gap. The morphologies of the blend film can be fine-tuned by increasing the chain length attached to the benzotriazole unit. Photovoltaic devices were fabricated using (6,6)-phenyl-C₆₁-butyric acid methyl ester (PC₆₀BM) and (6,6)-phenyl-C₇₁-butyric acid methyl ester (PC₇₀BM) as the acceptors. The maximum performance was achieved with a V_oc of 0.75 V, J_sc of 3.70 mA/cm ², FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC₇₀BM device using 1:4 w/w ratio in chlorobenzene (CB).

Original language	English (US)
Pages (from-to)	2047-2051
Number of pages	5
Journal	Synthetic Metals
Volume	162
Issue number	23
DOIs	https://doi.org/10.1016/j.synthmet.2012.09.017
State	Published - Dec 2012
Externally published	Yes

Keywords

Benzotriazole
Donor-acceptor polymers
Effect of chain length
Organic photovoltaics
Solar cell

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.synthmet.2012.09.017

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@article{cdb95e05a5484396a497155fc0ebcb70,

title = "Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers: Effect of alkyl chain length",

abstract = "A series of variable alkyl chain length substituted donor-acceptor (D-A) conjugated polymers with thiophene ring as the donor and benzotriazole moiety as the acceptor has been investigated in bulk heterojunction solar cells. The optical and electrochemical properties showed that the absorption onsets and the energy levels of the copolymers were not affected by alkyl substitution revealing 1.9 eV of optical band gap. The morphologies of the blend film can be fine-tuned by increasing the chain length attached to the benzotriazole unit. Photovoltaic devices were fabricated using (6,6)-phenyl-C61-butyric acid methyl ester (PC60BM) and (6,6)-phenyl-C71-butyric acid methyl ester (PC70BM) as the acceptors. The maximum performance was achieved with a Voc of 0.75 V, Jsc of 3.70 mA/cm 2, FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).",

keywords = "Benzotriazole, Donor-acceptor polymers, Effect of chain length, Organic photovoltaics, Solar cell",

author = "Derya Baran and Abidin Balan and Tobias Stubhan and Tayebeh Ameri and Levent Toppare and Brabec, {Christoph J.}",

year = "2012",

month = dec,

doi = "10.1016/j.synthmet.2012.09.017",

language = "English (US)",

volume = "162",

pages = "2047--2051",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier",

number = "23",

}

TY - JOUR

T1 - Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers

T2 - Effect of alkyl chain length

AU - Baran, Derya

AU - Balan, Abidin

AU - Stubhan, Tobias

AU - Ameri, Tayebeh

AU - Toppare, Levent

AU - Brabec, Christoph J.

PY - 2012/12

Y1 - 2012/12

N2 - A series of variable alkyl chain length substituted donor-acceptor (D-A) conjugated polymers with thiophene ring as the donor and benzotriazole moiety as the acceptor has been investigated in bulk heterojunction solar cells. The optical and electrochemical properties showed that the absorption onsets and the energy levels of the copolymers were not affected by alkyl substitution revealing 1.9 eV of optical band gap. The morphologies of the blend film can be fine-tuned by increasing the chain length attached to the benzotriazole unit. Photovoltaic devices were fabricated using (6,6)-phenyl-C61-butyric acid methyl ester (PC60BM) and (6,6)-phenyl-C71-butyric acid methyl ester (PC70BM) as the acceptors. The maximum performance was achieved with a Voc of 0.75 V, Jsc of 3.70 mA/cm 2, FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).

AB - A series of variable alkyl chain length substituted donor-acceptor (D-A) conjugated polymers with thiophene ring as the donor and benzotriazole moiety as the acceptor has been investigated in bulk heterojunction solar cells. The optical and electrochemical properties showed that the absorption onsets and the energy levels of the copolymers were not affected by alkyl substitution revealing 1.9 eV of optical band gap. The morphologies of the blend film can be fine-tuned by increasing the chain length attached to the benzotriazole unit. Photovoltaic devices were fabricated using (6,6)-phenyl-C61-butyric acid methyl ester (PC60BM) and (6,6)-phenyl-C71-butyric acid methyl ester (PC70BM) as the acceptors. The maximum performance was achieved with a Voc of 0.75 V, Jsc of 3.70 mA/cm 2, FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).

KW - Benzotriazole

KW - Donor-acceptor polymers

KW - Effect of chain length

KW - Organic photovoltaics

KW - Solar cell

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U2 - 10.1016/j.synthmet.2012.09.017

DO - 10.1016/j.synthmet.2012.09.017

M3 - Article

AN - SCOPUS:84868518996

SN - 0379-6779

VL - 162

SP - 2047

EP - 2051

JO - Synthetic Metals

JF - Synthetic Metals

IS - 23

ER -

Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers: Effect of alkyl chain length

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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