Synthesis of conjugated organic dyes containing alkyl substituted thiophene for solar cell

Three organic dyes, JK-41, JK-42, and JK-43 containing bis-dimethylfluoreneaniline and alkyl substituted thiophene unit are designed and synthesized. Under standard global AM 1.5 solar condition, the JK-41 sensitized cell gave a short circuit photocurrent density ( J sc) of 15.23 mA cm −2, open circ...

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Published inTetrahedron Vol. 63; no. 46; pp. 11436 - 11443
Main Authors Kim, Sanghoon, Choi, Hyunbong, Baik, Chul, Song, Kihyung, Kang, Sang Ook, Ko, Jaejung
Format Journal Article
LanguageEnglish
Published OXFORD Elsevier Ltd 12.11.2007
Elsevier
Subjects
Alkyl substituted thiophene
Chemistry
Chemistry, Organic
Organic dye
Physical Sciences
Science & Technology
Solar cell
Solar cell
Organic dye
Alkyl substituted thiophene
MEROCYANINE DYES
alkyl substituted thiophene
DESIGN
CONVERSION
SENSITIZERS
organic dye
TIO2 FILMS
COUMARIN DYES
PHOTOSENSITIZATION
ELECTRODE
solar cell
HIGH-EFFICIENCY
AGGREGATION
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Summary:Three organic dyes, JK-41, JK-42, and JK-43 containing bis-dimethylfluoreneaniline and alkyl substituted thiophene unit are designed and synthesized. Under standard global AM 1.5 solar condition, the JK-41 sensitized cell gave a short circuit photocurrent density ( J sc) of 15.23 mA cm −2, open circuit voltage ( V oc) of 0.67 V, and a fill factor of 0.67, corresponding to an overall conversion efficiency η of 7.69%. Molecular-orbital calculations of the three dyes suggest that the electron distribution moves from the aniline derivative to the cyanoacrylic acid moiety. We found that the power conversion efficiency was shown to be quite sensitive to the structural variations of alkyl substituted thiophene moiety. [Display omitted]
ISSN:0040-4020
1464-5416
DOI:10.1016/j.tet.2007.08.058