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

D. Baran, A. Balan, T. Stubhan, T. Ameri, L. Toppare, C.J. Brabec

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

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/cm2, 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 languageEnglish
Pages (from-to)2047-2051
Number of pages5
JournalSynthetic Metals
Volume162
Issue number23
DOIs
Publication statusPublished - 2012

Fingerprint

Butyric acid
butyric acid
Chain length
esters
copolymers
Esters
Copolymers
Thiophenes
chlorobenzenes
Butyric Acid
Conjugated polymers
Optical band gaps
Thiophene
thiophenes
Electrochemical properties
Electron energy levels
Heterojunctions
heterojunctions
Solar cells
Substitution reactions

Cite this

Baran, D. ; Balan, A. ; Stubhan, T. ; Ameri, T. ; Toppare, L. ; Brabec, C.J. / Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers : effect of alkyl chain length. In: Synthetic Metals. 2012 ; Vol. 162, No. 23. pp. 2047-2051.
@article{55804959469345dbb5cdbed275aa94e0,
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/cm2, FF of 45{\%} and a PCE of 1.23{\%} for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).",
author = "D. Baran and A. Balan and T. Stubhan and T. Ameri and L. Toppare and C.J. Brabec",
year = "2012",
doi = "10.1016/j.synthmet.2012.09.017",
language = "English",
volume = "162",
pages = "2047--2051",
journal = "Synthetic Metals",
issn = "0379-6779",
publisher = "Elsevier",
number = "23",

}

Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers : effect of alkyl chain length. / Baran, D.; Balan, A.; Stubhan, T.; Ameri, T.; Toppare, L.; Brabec, C.J.

In: Synthetic Metals, Vol. 162, No. 23, 2012, p. 2047-2051.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Photovoltaic properties of benzotriazole containing alternating donor-acceptor copolymers : effect of alkyl chain length

AU - Baran, D.

AU - Balan, A.

AU - Stubhan, T.

AU - Ameri, T.

AU - Toppare, L.

AU - Brabec, C.J.

PY - 2012

Y1 - 2012

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/cm2, 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/cm2, FF of 45% and a PCE of 1.23% for the PTBT-DA10:PC70BM device using 1:4 w/w ratio in chlorobenzene (CB).

U2 - 10.1016/j.synthmet.2012.09.017

DO - 10.1016/j.synthmet.2012.09.017

M3 - Article

VL - 162

SP - 2047

EP - 2051

JO - Synthetic Metals

JF - Synthetic Metals

SN - 0379-6779

IS - 23

ER -