Molecular Engineering of D−π–A
Type of Blue-Colored Dyes for Highly Efficient Solid-State Dye-Sensitized
Solar Cells through Co-Sensitization
Version 2 2018-11-08, 18:21
Version 1 2018-10-12, 11:20
Posted on 2018-11-08 - 18:21
A novel
blue-colored organic donor-π-acceptor sensitizer,
the so-called MKA16 dye, has been employed to construct solid-state
dye-sensitized solar cells (ssDSSCs). Using 2,2′,7-,7′-tetrakis(N,N-di-p-methoxyphenyl-amine)
9,9′-spirobifuorene (Spiro-OMeTAD) as hole-transport material,
a good conversion efficiency of 5.8% was recorded for cells based
on the MKA16 dye and a high photovoltage of 840 mV in comparison with
5.6% efficiency using the known (Dyenamo Blue) dye. By co-sensitization
using the orange-colored D35 dye and MKA16 together, the solid-state
solar cells showed an excellent efficiency of 7.5%, with a high photocurrent
of 12.41 mA cm–2 and open-circuit voltage of 850
mV. The results show that the photocurrent of ssDSSCs can be significantly
improved by co-sensitization mainly attributed to the wider light
absorption range contributing to the photocurrent. In addition, results
from photo-induced absorption spectroscopy show that the dye regeneration
is efficient in co-sensitized solar cells. The current results possible
routes of improving the design of aesthetic and highly efficient ssDSSCs.
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Liu, Peng; Wang, Linqin; Karlsson, Karl Martin; Hao, Yan; Gao, Jiajia; Xu, Bo; et al. (2018). Molecular Engineering of D−π–A
Type of Blue-Colored Dyes for Highly Efficient Solid-State Dye-Sensitized
Solar Cells through Co-Sensitization. ACS Publications. Collection. https://doi.org/10.1021/acsami.8b11405
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AUTHORS (9)
PL
Peng Liu
LW
Linqin Wang
KK
Karl Martin Karlsson
YH
Yan Hao
JG
Jiajia Gao
BX
Bo Xu
GB
Gerrit Boschloo
LS
Licheng Sun
LK
Lars Kloo
KEYWORDS
MKA 16results showopen-circuit voltagehole-transport materialdye regenerationnovel blue-coloreddonor -π-acceptor sensitizerMKA 16 dye850 mVMolecular EngineeringDyenamo BluessDSSCBlue-Colored Dyeslight absorption rangeEfficient Solid-State Dye-Sensitized Solar Cellsconversion efficiencyphoto-induced absorption spectroscopy showphotocurrentco-sensitizationorange-colored D 35 dye840 mV