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Molecular engineering of thia-bridged triphenylamine heterohelicenes as novel organic dyes for dye-sensitized solar cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
26668 43970 2011 9 PDF Available
Title
Molecular engineering of thia-bridged triphenylamine heterohelicenes as novel organic dyes for dye-sensitized solar cells
Abstract

Three organic sensitizers incorporating thia-bridged heterohelicene unit, thiophene-conjugate bridge, and cyanoacrylic acid were synthesized. The power conversion efficiency was quite sensitive to the substituents on heterohelicene donor group. Under standard global AM 1.5 solar conditions, the JK-206-sensitized cell gave a short-circuit photocurrent density (Jsc) of 13.44 mA cm−2, an open-circuit voltage (Voc) of 0.71 V, and a fill factor of 0.74, corresponding to an overall conversion efficiency of 7.08%. The device based on the JK-206 with an ionic liquid electrolyte showed an excellent long-term stability. The initial efficiency of 5.6% for JK-206 slightly decreased to only 5.4% after the 1000 h light soaking at 60 °C.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Three organic sensitizers incorporating thia-bridged heterohelicene unit, thiophene conjugate bridge, and cyanoacrylic acid were synthesized. ► The power conversion efficiency was quite sensitive to the substituents on heterohelicene donor group. ► Under standard global AM 1.5 solar conditions, the JK-206-sensitized cell gave a short-circuit photocurrent density (Jsc) of 13.44 mA cm−2, an open-circuit voltage (Voc) of 0.71 V, and a fill factor of 0.74, corresponding to an overall conversion efficiency of 7.08%.

Keywords
Thia-bridged heterohelicene; Organic dye; Dye-sensitized solar cell; DSSCs
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Molecular engineering of thia-bridged triphenylamine heterohelicenes as novel organic dyes for dye-sensitized solar cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 225, Issue 1, 1 December 2011, Pages 17–25
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us