Cyclohexane substituted phenothiazine organic dyes for dye sensitized solar cells

Abstract

Over the last few years considerable attention was given to the field of dye sensitized solar cells (DSSC). DSSC are the type of solar cells which uses film of TiO2 coated with a monolayer of dye that absorbs light in the visible region. The advantages over inorganic solar cells is the low-cost production and metal free dyes hence non-toxic. The main aim of the thesis is to synthesize two D-A type molecules having phenothiazine as donor moiety and cyanoacrylic acid as the acceptor by Pd-Catalyzed Sonogashira and Suzuki Coupling. The Photochemical, electrochemical and theoretical properties were investigated. The absorption was observed in the range of 395-405 nm. The DFT calculations reveal that HOMO is on phenothiazine and LUMO on cyanoacrylic acid.