Leaf Dye Sensitized Solar Cells

Dye sensitized solar cell made of mesoporous titania by surfactant assisted templating method.

Leaf dye sensitized solar cells. Dye sensitized solar cell dssc is a promising alternative to conventional silicon solar cells which effectively utilizes a property of nanocrystalline wide band gap semiconductor metal oxide porous electrode it provides a prime attention as an alternative source of clean and green energy due to its several advantages such as low price to performance ratio low processing cost and low. Here three natural dyes were extracted from different fruits and leaves and used as sensitizers for dye sensitized solar cells dsscs. A dye sensitized solar cell made by coating pigments in an extract from shiso leaves on a nanocrystalline film of tio 2 and subsequent deposition of p cui is found to have an energy conversion efficiency of 1 3. Chlorophyll was extracted from spinach leaves using acetone as a solvent.

Anthocyanin was extracted from red cabbage and onion peels using water. The photoelectrochemical performance of the flame tree flower dye extract showed an open circuit voltage voc of 0 50 v short circuit current density jsc of 0 668 ma cm2 a fill factor ff of 0 588 and a conversion efficiency of 0 20. Anthocyanins have been used in organic solar cells because of their ability to convert light energy into electrical energy. Solar energy materials and solar cells 2006 90 18 19 3187 3192.

The reds purples and their. Different characterizations for the prepared natural dyes were conducted including uv vis absorption ftir and. Anodes comprising porous nanocrystalline tio 2 films on a transparent conductive oxide glass substrate electrolytic organic solvent and a counter electrode ce. Natural dyes from flame tree flower pawpaw leaf and their mixtures were used as sensitizers to fabricate dye sensitized solar cells dssc.

The modern version of a dye solar cell also known as the grätzel cell was originally co invented in 1988 by brian o regan and michael. 1 5 dscs are mainly composed of three components. A dye sensitized solar cell dssc dsc dysc or grätzel cell is a low cost solar cell belonging to the group of thin film solar cells. Examined the stability of dye sensitized solar cells based on natural dye extracted from papaya leaf with the acidity of the dye adjusted by the addition of benzoic acid.

Both shisonin and chlorophyll contribute to light energy harvesting as seen from the photocurrent action spectrum of the cell.