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http://dx.doi.org/10.4313/JKEM.2015.28.11.731

Fabrication and Characterization of Dye-Sensitized Solar Cells Based on Rhodamine Dyes  

Choi, Kang-Hoon (Department of Chemistry, The Catholic University of Korea)
Jung, Hye-In (Department of Chemistry, The Catholic University of Korea)
An, Byeong-Kwan (Department of Chemistry, The Catholic University of Korea)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.28, no.11, 2015 , pp. 731-736 More about this Journal
Abstract
Rhodamine B (RhB) was utilized as a dye sensitizer for dye-sensitized solar cells (DSSCs) and its photovoltaic property was examined under the illumination of AM 1.5 G, $100mWcm^{-2}$. DSSCs based on RhB exhibited typical photovoltaic properties with an open-circuit voltage ($V_{OC}$) of 0.34 V, a short-circuit current ($J_{SC}$) of $1.55mA{\cdot}cm^{-2}$, a fill factor (FF) of 50%, and a conversion efficiency (PCE) of 0.26%. In order to further improve the photovoltaic properties of RhB-based DSSCs, the effect of (i) incorporating a strong electron-donating NCS unit into the RhB molecular backbone, (ii) combining a bis-negatively charged zinc complex anion ($Zn-dmit_2$, dmit=di-mercapto-dithiol-thione) with the amine cation of RhB, (iii) co-adsorbing RhB dyes with chenodeoxycholic acid (CDCA) molecules onto porous $TiO_2$ electrodes, was investigated and discussed.
Keywords
Rhodamine B; Rhodamine B isothiocyanate; DSSCs (Dye-sensitized solar cells); $TiO_2$ (Titanium dioxides);
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