Benzo[1,2-b:4,5-b′]dithiophene and benzo[1,2-b:4,5-b′]difuran based organic dipolar compounds for sensitized solar cells

Yan Zuo Lin; Chia Wei Yeh; Po Ting Chou; Motonori Watanabe; Yu Hsuan Chang; Yuan Jay Chang; Tahsin J. Chow

doi:10.1016/j.dyepig.2014.04.043

Benzo[1,2-b:4,5-b′]dithiophene and benzo[1,2-b:4,5-b′]difuran based organic dipolar compounds for sensitized solar cells

Yan Zuo Lin, Chia Wei Yeh, Po Ting Chou, Motonori Watanabe, Yu Hsuan Chang, Yuan Jay Chang, Tahsin J. Chow

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

14 Citations (Scopus)

Abstract

Novel organic dyes that consist of either a benzo[1,2-b:4,5-b′] dithiophene or a benzo[1,2-b:4,5-b′]difuran core exhibited remarkable solar-to-energy conversion efficiency in dye-sensitized solar cells. The planar geometry of bridge moiety and its bulky substituents helped the dyes to form a high quality monolayer on the surface of titanium oxide. A typical device displayed photon-to-current conversion efficiency 60% in the region of 380-575 nm, a short-circuit photocurrent density 13.45 mA cm^-2, an open-circuit photovoltage 0.72 V, and a fill factor 0.63, corresponding to an overall conversion efficiency 6.12%. In a test of using deoxycholic acid as a co-absorbent, an improvement of quantum efficiencies 8.37% was observed for certain compounds. However, for others the quantum efficiency decreased in 6.60-7.91%. The latter result indicated that the quality of some films cannot be further improved by the addition of deoxycholic acid. The photophysical properties were analyzed with the aid of TDDFT.

Original language	English
Pages (from-to)	81-89
Number of pages	9
Journal	Dyes and Pigments
Volume	109
DOIs	https://doi.org/10.1016/j.dyepig.2014.04.043
Publication status	Published - Oct 2014

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Process Chemistry and Technology

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@article{48e57de738c74e08801a4513380cbfe2,

title = "Benzo[1,2-b:4,5-b′]dithiophene and benzo[1,2-b:4,5-b′]difuran based organic dipolar compounds for sensitized solar cells",

abstract = "Novel organic dyes that consist of either a benzo[1,2-b:4,5-b′] dithiophene or a benzo[1,2-b:4,5-b′]difuran core exhibited remarkable solar-to-energy conversion efficiency in dye-sensitized solar cells. The planar geometry of bridge moiety and its bulky substituents helped the dyes to form a high quality monolayer on the surface of titanium oxide. A typical device displayed photon-to-current conversion efficiency 60% in the region of 380-575 nm, a short-circuit photocurrent density 13.45 mA cm-2, an open-circuit photovoltage 0.72 V, and a fill factor 0.63, corresponding to an overall conversion efficiency 6.12%. In a test of using deoxycholic acid as a co-absorbent, an improvement of quantum efficiencies 8.37% was observed for certain compounds. However, for others the quantum efficiency decreased in 6.60-7.91%. The latter result indicated that the quality of some films cannot be further improved by the addition of deoxycholic acid. The photophysical properties were analyzed with the aid of TDDFT.",

author = "Lin, {Yan Zuo} and Yeh, {Chia Wei} and Chou, {Po Ting} and Motonori Watanabe and Chang, {Yu Hsuan} and Chang, {Yuan Jay} and Chow, {Tahsin J.}",

note = "Funding Information: Financial supports from the National Science Council Taiwan ( NSC 101-2113-M-035-001-MY2 ) and Academia Sinica are gratefully acknowledged. Special thanks to Professor Hsu CP in the Institute of Chemistry, Academia Sinica, for the assistance on Quantum chemistry computations. ",

year = "2014",

month = oct,

doi = "10.1016/j.dyepig.2014.04.043",

language = "English",

volume = "109",

pages = "81--89",

journal = "Dyes and Pigments",

issn = "0143-7208",

publisher = "Elsevier BV",

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TY - JOUR

T1 - Benzo[1,2-b:4,5-b′]dithiophene and benzo[1,2-b:4,5-b′]difuran based organic dipolar compounds for sensitized solar cells

AU - Lin, Yan Zuo

AU - Yeh, Chia Wei

AU - Chou, Po Ting

AU - Watanabe, Motonori

AU - Chang, Yu Hsuan

AU - Chang, Yuan Jay

AU - Chow, Tahsin J.

N1 - Funding Information: Financial supports from the National Science Council Taiwan ( NSC 101-2113-M-035-001-MY2 ) and Academia Sinica are gratefully acknowledged. Special thanks to Professor Hsu CP in the Institute of Chemistry, Academia Sinica, for the assistance on Quantum chemistry computations.

PY - 2014/10

Y1 - 2014/10

N2 - Novel organic dyes that consist of either a benzo[1,2-b:4,5-b′] dithiophene or a benzo[1,2-b:4,5-b′]difuran core exhibited remarkable solar-to-energy conversion efficiency in dye-sensitized solar cells. The planar geometry of bridge moiety and its bulky substituents helped the dyes to form a high quality monolayer on the surface of titanium oxide. A typical device displayed photon-to-current conversion efficiency 60% in the region of 380-575 nm, a short-circuit photocurrent density 13.45 mA cm-2, an open-circuit photovoltage 0.72 V, and a fill factor 0.63, corresponding to an overall conversion efficiency 6.12%. In a test of using deoxycholic acid as a co-absorbent, an improvement of quantum efficiencies 8.37% was observed for certain compounds. However, for others the quantum efficiency decreased in 6.60-7.91%. The latter result indicated that the quality of some films cannot be further improved by the addition of deoxycholic acid. The photophysical properties were analyzed with the aid of TDDFT.

AB - Novel organic dyes that consist of either a benzo[1,2-b:4,5-b′] dithiophene or a benzo[1,2-b:4,5-b′]difuran core exhibited remarkable solar-to-energy conversion efficiency in dye-sensitized solar cells. The planar geometry of bridge moiety and its bulky substituents helped the dyes to form a high quality monolayer on the surface of titanium oxide. A typical device displayed photon-to-current conversion efficiency 60% in the region of 380-575 nm, a short-circuit photocurrent density 13.45 mA cm-2, an open-circuit photovoltage 0.72 V, and a fill factor 0.63, corresponding to an overall conversion efficiency 6.12%. In a test of using deoxycholic acid as a co-absorbent, an improvement of quantum efficiencies 8.37% was observed for certain compounds. However, for others the quantum efficiency decreased in 6.60-7.91%. The latter result indicated that the quality of some films cannot be further improved by the addition of deoxycholic acid. The photophysical properties were analyzed with the aid of TDDFT.

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ER -

Benzo[1,2-b:4,5-b′]dithiophene and benzo[1,2-b:4,5-b′]difuran based organic dipolar compounds for sensitized solar cells

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