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A Near-IR Organic Sensitizer with Squaraine and Phenothiazine Unit for Dye-Sensitized Solar Cells

Authors
Bae, Seong HeeSeo, Kang DeukKim, Hwan Kyu
Issue Date
2-9월-2014
Publisher
TAYLOR & FRANCIS LTD
Keywords
panchromatic dye; squaraine; phenothiazine; dye-sensitized solar cells; near-IR dye
Citation
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.600, no.1, pp.116 - 122
Indexed
SCIE
SCOPUS
Journal Title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
Volume
600
Number
1
Start Page
116
End Page
122
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/97420
DOI
10.1080/15421406.2014.936798
ISSN
1542-1406
Abstract
A new unsymmetrical squaraine-based near-IR sensitizer (SGT-202), where electron-rich bithiophene conjugated fragment was used to link to the squaraine core and phenothiazine unit as electron-donating group, was synthesized and applied for dye-sensitized solar cells. The SGT-202 dye exhibits the lambda(max) of 667nm and a strong luminescence maximum wavelength at 765nm. The photovoltaic performance based on a newly developed squaraine dye shows a short-circuit photocurrent density (J(SC)) of 8.6mA/cm(2), an open-circuit voltage (V-OC) of 435V, and a fill factor (FF) of 0.68 corresponding to an overall conversion efficiency (eta) of 2.6%.
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