Investigating the effect of heteroatom substitution in 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole compounds for organic photovoltaics

Joseph Cameron; Mahmoud Matar Abed; Steven J. Chapman; Neil J. Findlay; Peter J. Skabara; Peter N. Horton; Simon J. Coles

doi:10.1039/c7tc05075e

Investigating the effect of heteroatom substitution in 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole compounds for organic photovoltaics

Joseph Cameron
, Mahmoud Matar Abed
, Steven J. Chapman
, Neil J. Findlay
, Peter J. Skabara
, Peter N. Horton
, Simon J. Coles

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

15 Scopus citations

Abstract

Two new donor-acceptor-donor molecules, featuring either 2,1,3-benzothiadiazole (BT) or 2,1,3-benzoxadiazole (BO) and capped by benzofuranyl-thienyl groups, are presented. The structures of these novel compounds differ only in the identity of one heteroatom in the acceptor unit. Replacement of the sulfur atom in BT with oxygen results in a marked improvement in the performance of PC₆₁BM blends in bulk heterojunction organic photovoltaic (BHJ OPV) devices: a 10-fold increase in PCE is observed when switching to the BO analogue. This is partly due to a preferable morphology in the donor-fullerene blends formed upon spin-coating from chlorinated solvents.

Original language	English (US)
Pages (from-to)	3709-3714
Number of pages	6
Journal	Journal of Materials Chemistry C
Volume	6
Issue number	14
DOIs	https://doi.org/10.1039/c7tc05075e
State	Published - 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2018 The Royal Society of Chemistry.

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10.1039/c7tc05075e

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title = "Investigating the effect of heteroatom substitution in 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole compounds for organic photovoltaics",

abstract = "Two new donor-acceptor-donor molecules, featuring either 2,1,3-benzothiadiazole (BT) or 2,1,3-benzoxadiazole (BO) and capped by benzofuranyl-thienyl groups, are presented. The structures of these novel compounds differ only in the identity of one heteroatom in the acceptor unit. Replacement of the sulfur atom in BT with oxygen results in a marked improvement in the performance of PC61BM blends in bulk heterojunction organic photovoltaic (BHJ OPV) devices: a 10-fold increase in PCE is observed when switching to the BO analogue. This is partly due to a preferable morphology in the donor-fullerene blends formed upon spin-coating from chlorinated solvents.",

author = "Joseph Cameron and Abed, \{Mahmoud Matar\} and Chapman, \{Steven J.\} and Findlay, \{Neil J.\} and Skabara, \{Peter J.\} and Horton, \{Peter N.\} and Coles, \{Simon J.\}",

note = "Publisher Copyright: {\textcopyright} 2018 The Royal Society of Chemistry.",

year = "2018",

doi = "10.1039/c7tc05075e",

language = "English (US)",

volume = "6",

pages = "3709--3714",

journal = "Journal of Materials Chemistry C",

issn = "2050-7534",

publisher = "Royal Society of Chemistry",

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TY - JOUR

T1 - Investigating the effect of heteroatom substitution in 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole compounds for organic photovoltaics

AU - Cameron, Joseph

AU - Abed, Mahmoud Matar

AU - Chapman, Steven J.

AU - Findlay, Neil J.

AU - Skabara, Peter J.

AU - Horton, Peter N.

AU - Coles, Simon J.

PY - 2018

Y1 - 2018

N2 - Two new donor-acceptor-donor molecules, featuring either 2,1,3-benzothiadiazole (BT) or 2,1,3-benzoxadiazole (BO) and capped by benzofuranyl-thienyl groups, are presented. The structures of these novel compounds differ only in the identity of one heteroatom in the acceptor unit. Replacement of the sulfur atom in BT with oxygen results in a marked improvement in the performance of PC61BM blends in bulk heterojunction organic photovoltaic (BHJ OPV) devices: a 10-fold increase in PCE is observed when switching to the BO analogue. This is partly due to a preferable morphology in the donor-fullerene blends formed upon spin-coating from chlorinated solvents.

AB - Two new donor-acceptor-donor molecules, featuring either 2,1,3-benzothiadiazole (BT) or 2,1,3-benzoxadiazole (BO) and capped by benzofuranyl-thienyl groups, are presented. The structures of these novel compounds differ only in the identity of one heteroatom in the acceptor unit. Replacement of the sulfur atom in BT with oxygen results in a marked improvement in the performance of PC61BM blends in bulk heterojunction organic photovoltaic (BHJ OPV) devices: a 10-fold increase in PCE is observed when switching to the BO analogue. This is partly due to a preferable morphology in the donor-fullerene blends formed upon spin-coating from chlorinated solvents.

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DO - 10.1039/c7tc05075e

M3 - Article

AN - SCOPUS:85044986678

SN - 2050-7534

VL - 6

SP - 3709

EP - 3714

JO - Journal of Materials Chemistry C

JF - Journal of Materials Chemistry C

IS - 14

ER -

Investigating the effect of heteroatom substitution in 2,1,3-benzoxadiazole and 2,1,3-benzothiadiazole compounds for organic photovoltaics

Abstract

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