Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells
碩士 === 國立臺灣師範大學 === 化學系 === 99 === A novel series of metal-free organic dyes were synthesized via Stille coupling, Buchwald-Hartwig coupling and Knoevenagel condensation. These dyes are composed of an arylamine moiety as the electron donor, a conjugated spacer containing ethyl thieno[3,4-b]thiophene...
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ndltd-TW-099NTNU50650722015-10-19T04:03:58Z http://ndltd.ncl.edu.tw/handle/79515931487580343245 Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells 含[3,4-b]雙噻吩單元之染料及其在染敏太陽能電池之應用 ming-chih Tsai 蔡明志 碩士 國立臺灣師範大學 化學系 99 A novel series of metal-free organic dyes were synthesized via Stille coupling, Buchwald-Hartwig coupling and Knoevenagel condensation. These dyes are composed of an arylamine moiety as the electron donor, a conjugated spacer containing ethyl thieno[3,4-b]thiophene-2-carboxylate, and furan (or thiophene) as the electron transmitting bridge, and an 2-cyanoacrylic acid as the electron acceptor and anchoring group to the TiO2 surface. The lowbandgap thieno[3,4-b]thiophene entity was incorporated in the conjugated spacer of the sensitizer for red shifting the absorption band. Indeed, the charge-transfer absorption maximum of the sensitizer ranges from 477 to 553 nm. Cyclic voltammograms and absorption spectra were used to calculate the HOMO and LUMO energy levels of these dyes, The HOMO and LUMO energies fall in the range of 5.23−5.48 and 3.14−3.37 eV, respectively, which facilitate both electron injection to TiO2 and subsequent dye regeneration. Dye-sensitized solar cells (DSSCs) using these dyes exhibit high solar energy-to-electricity conversion efficiencies ranging from 1.23% to 5.31%, which reach 17−72% of the standard device of N719 fabricated and measured under the same conditions. Ching-Fa Yao Jiann-Tsuen Lin 姚清發 林建村 2011 學位論文 ; thesis 140 zh-TW |
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碩士 === 國立臺灣師範大學 === 化學系 === 99 === A novel series of metal-free organic dyes were synthesized via Stille coupling, Buchwald-Hartwig coupling and Knoevenagel condensation. These dyes are composed of an arylamine moiety as the electron donor, a conjugated spacer containing ethyl thieno[3,4-b]thiophene-2-carboxylate, and furan (or thiophene) as the electron transmitting bridge, and an 2-cyanoacrylic acid as the electron acceptor and anchoring group to the TiO2 surface.
The lowbandgap thieno[3,4-b]thiophene entity was incorporated in the conjugated spacer of the sensitizer for red shifting the absorption band. Indeed, the charge-transfer absorption maximum of the sensitizer ranges from 477 to 553 nm. Cyclic voltammograms and absorption spectra were used to calculate the HOMO and LUMO energy levels of these dyes, The HOMO and LUMO energies fall in the range of 5.23−5.48 and 3.14−3.37 eV, respectively, which facilitate both electron injection to TiO2 and subsequent dye regeneration. Dye-sensitized solar cells (DSSCs) using these dyes exhibit high solar energy-to-electricity conversion efficiencies ranging from 1.23% to 5.31%, which reach 17−72% of the standard device of N719 fabricated and measured under the same conditions.
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author2 |
Ching-Fa Yao |
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Ching-Fa Yao ming-chih Tsai 蔡明志 |
author |
ming-chih Tsai 蔡明志 |
spellingShingle |
ming-chih Tsai 蔡明志 Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
author_sort |
ming-chih Tsai |
title |
Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
title_short |
Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
title_full |
Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
title_fullStr |
Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
title_full_unstemmed |
Thieno[3,4-b]thiophene-Based Organic Dye for Dye-Sensitized Solar Cells |
title_sort |
thieno[3,4-b]thiophene-based organic dye for dye-sensitized solar cells |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/79515931487580343245 |
work_keys_str_mv |
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