Manufacture of Lignin Sensitized Solar Cells from Wood Waste Building Materials

Manufacture of Lignin Sensitized Solar Cells from Wood Waste Building Materials
A dye-sensitized solar cell (DSSC, DSC, DYSC or Grätzel cell) is a low-cost solar cell that belongs to the group of solar cell thin films. It is based on a semiconductor formed between a photo-sensitized anode and electrolyte, a photoelectrochemical system. The modern version of dye solar cell, also known as the Grätzel cell, was originally invented in 1988 by Brian O’Regan and Michael Grätzel at UC Berkeley and this work was later developed by the authored scientists at the Ecole Polytechnique Fédérale de Lausanne until the publication of the first high efficiency DSSC in 1991.  Michael Grätzel has been awarded the 2010 Millennium Technology Prize for this invention.

Manufacture of Lignin Sensitized Solar Cells from Wood Waste Building Materials
Dye sensitized solar cells (wikipedia)

The DSSC has a number of attractive features; it is simple to make using conventional roll-printing techniques, it is semi-flexible and semi-transparent which offers a variety of uses not for glass-based systems, and most of the materials used are low-cost. In practice it has proven to be a difficult to eliminate number of expensive materials, notably platinum and ruthenium, and the liquid electrolyte presents a serious challenge to make a cell suitable for use in all weather. Although its conversion efficiency is less than the best thin-film cells, in theory its price / performance ratio should be good enough to allow them to compete with fossil fuel electrical generation by achieving a grid parity. Commercial applications, which were held up due to chemical stability problems, are forecast in the European Union Photovoltaic Roadmap to significantly contribute to renewable electricity generation by 2020.

Manufacture of Lignin Sensitized Solar Cells from Wood Waste Building Materials
This study aims to make Dye-sensitized solar cell (DSSC) which utilizes lignin from wood waste of building materials and to determine the voltage generated. This sensitized solar cell (DSSC) consists of a pair of TCO (Transparant Conducting Oxide) glass substrates facing each other, the glass functions as a working electrode and counter electrode and is separated by a redox (I / I3) electrolyte, arranged flanking together to form wafer. At the working electrode, a porous Ti2O nanocrystal layer is deposited, then lignin dye is concentrated.
Manufacture of Lignin Sensitized Solar Cells from Wood Waste Building Materials
Wood powder (Pict.manfaat.co.id)

While the counter electrode is coated with a carbon layer as a catalyst. Lignin extraction was carried out in a solvent mixture of ethanol and distilled water with a ratio (1: 1). In this study the process of dissemination using TiO2 substrate immersion technique in dye lignin solution was carried out by immersion variation of 1 hour, 12 hours, and 24 hours was 402.1 mv, 420.9 mv and 431.1 mv. When the lignin dye immersion process affects the voltage, the longer the immersion is done the greater the voltage generated

Muhammad Ilham Ramadhani dan Herda Meilana
SMA N 5 Pontianak Kalimantan Indonesia

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