Abstract :

With the world heating towards a major fuel crisis (storage and cost), alternative sources of fuel has become a major research area recently, in almost all disciplines of science. The nuclear and hydrogen based posing problems for use, much attention has now been focused on other non-conventional energy like wind, water, geothermal and solar energy. NDSSCs show the most promising future due to their, independent, environmentally friendly, low maintenance and low cost. Furthermore, NDSSC offers the possibility of various colours and attractive designs such as semitransparent modules. In this study, a photo-electrode using Mg doped TiO2, Bi doped TiO2, Al doped TiO2 and ZnO doped TiO2 nanopaste was coated on FTO glass plate by doctor-blade method. The analyze optical absorption and functional groups of prepared natural dyes such as Krishna Tulsi (Ocimum sanctum), Rama Tulsi (Ocimum sanctum) and Vana Tulsi (Ocimum gratissimum) are analysis by using UV-Visible and FT-IR spectroscopy. In the FT-IR spectra exhibit peaks corresponding to specific functional group present in samples. The optical properties and surface morphology of dyed photoanode were analyzed by using UV-Visible spectroscopy, PL-studies and FE-SEM analysis. Finally photocurrent-voltaic characterization of fabricated nanocrystalline natural dye solar cells were studied by using J-V curves. It was found that the levels of short-circuit current (Jsc), open-circuit voltage (Voc), fill factor (FF) and overall conversion efficiency (η) of fabricated cells for different natural dyes.