Novel organic dyes with anchoring group of quinoxaline-2, 3-diol and the application in dye-sensitized solar cells. (February 2015)

• Record Type: Journal Article
• Authors: Wang, Lei; Yang, Xichuan; Wang, Xiuna; Sun, Licheng
• Is Part Of: Dyes and pigments. Volume 113(2015)
• Page Start: 581
• Page End: 587
• Publication Date: 2015-02
• Subjects: DSSCs -- Organic sensitizers -- Quinoxaline-2, 3-diol -- Anchoring group -- FTIR -- Hydroxyl group; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2014.09.019
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Two organic quinoxaline dyes (WQ-1 andWQ-2 ) with a structure of quinoxaline-2, 3-diol as the electron withdrawing and anchoring group were synthesized and applied in the dye-sensitized solar cells. Fourier transform infrared spectroscopy and two other reference dyes (WQ-R1 andWQ-R2 ) without the hydroxyl groups were introduced to ascertain the adsorption properties of the dye series. The effect of the new electron acceptor and anchoring group on the performance of solar cells was investigated systematically. Under the standard light illumination (100 mW m −2 ), WQ-2 got an efficiency of 2.25%, with a short circuit photocurrent density of 5.51 mA cm −2, an open circuit voltage of 0.612 V and a fill factor of 66.74%. Graphical abstract: Highlights: Organic dye-sensitizers with new anchoring group for the application in DSSCs. The new anchoring group has a structure of quinoxaline-2, 3-diol. The adsorption state of the dye series was studied by FTIR and ascertained by reference dye molecules.