Perylene diimide based low band gap copolymers: synthesis, characterization and their applications in perovskite solar cells
In this study, newly designed perylene diimide based polymers P1 and P2 were synthesized and were used as hole transporting materials in place of the more common spiro-OMeTAD in perovskite solar cells. The co-polymers P1 - P2 were synthesized by Suzuki and direct arylation polymerizations of 2,9-bis...
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Published in | Journal of polymer research Vol. 27; no. 8 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Dordrecht
Springer Netherlands
2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | In this study, newly designed perylene diimide based polymers
P1
and
P2
were synthesized and were used as hole transporting materials in place of the more common spiro-OMeTAD in perovskite solar cells. The co-polymers
P1
-
P2
were synthesized by Suzuki and direct arylation polymerizations of 2,9-bis(7-bromo-9,9-dioctyl-9
H
-fluoren-2-yl)anthra[2,1,9-def:6,5,10-
d
’
e
’
f
’]diisoquinoline-1,3,8,10(2
H
,9
H
)-tetrone
M1
with 5,11-bis(2-hexyldecyl)-3,9-bis(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5,11-dihydoindolo[3,2-b]carbazole
M2
and 3-octylthiophene
M3
, respectively.
P1
and
P2
exhibit broad absorption spectra in thin film and solution with the absorption extending from the ultraviolet to visible and near infrared region of the solar spectrum. The water contact angles of
P1
-
P2
were determined to be 100.8° and 122.9°, respectively, showing good hydrophobicity for the synthesized copolymers. Both polymers show steady state photoluminescence quenching when blended with perovskite. Perovskite solar cell devices fabricated using
P1-P2
in place of spiro-OMeTAD show power conversion efficiencies of 13.02% and 10.74%, respectively and manifest the potential of this class of materials as promising alternatives to conventionally used spiro-OMeTAD.
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ISSN: | 1022-9760 1572-8935 |
DOI: | 10.1007/s10965-020-02212-3 |