Organic Sensitizers based on Bis-carbazole for Dye-Sensitized Solar Cells
비스-카바졸 유기염료를 이용한 염료감응태양전지
- Kim, Hyo-Jeong (Daegu Gyeongbuk Institute of Science and Technology (DGIST)) ;
- Byun, Yeo-Jin (Keimyung University) ;
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Nam, Jung-Eun
(Daegu Gyeongbuk Institute of Science and Technology (DGIST))
;
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Kim, Dae-Hwan
(Daegu Gyeongbuk Institute of Science and Technology (DGIST))
;
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Kang, Jin-Kyu
(Daegu Gyeongbuk Institute of Science and Technology (DGIST))
- Published : 2012.03.29
Abstract
Dye-sensitized solar cells (DSSCs) have received considerable attention as the most promising candidates for renewable energy systems in recent years. Among these, organic dyes which have many advantages such as large absorption coefficients, customized molecular design for desired photophysical and photochemical properties, inexpensiveness and environment-friendliness, are suitable as photosensitizers for DSSCs. We have studied on the design and synthesis of two organic dyes (BECZ 1 and BECZ 2) with a 9-ethyl-9H-carbazole core for dye-sensitized solar cells (DSSCs). Two organic dyes comprised of two 9-ethyl-9H-carbazole moiety as electron-donor, two types of cyanoacrylic acid moiety acting as acceptor. In addition, n-ethyl unit introduced for increasing the solubility and the donating power. The obtained organic dyes were comprehensively characterized by NMR, GC-MS, FAB-MS and UV/Vis spectroscopies. DSSCs sensitized by the dyes BECZ1 and BECZ2 produced