Outreach

Dye sensitized solar cell kit

With the  solar cell kit, we want to let you build your own solar cells and also show how multidisciplinary  todays chemistry is.

We want you to apply your knowledge in chemistry, physics and biology to help to solve the future energy needs in a sustainable way.

The solar cell kit is intended as a laboratory tool in the regular teaching or as a starting point for a project. In this booklet you will find labhandledningenmedan theory and depth information is available on TEKNAT.

The Solar Cell Kit

Grätzel dye-sensitized solar cells consists of three components: working electrode, electrolyte and counter electrode.


The working of the solar cell consists of a conductive glass substrate on which a nanoporous
layer of small TiO2 particels on.
These electrodes are an example of nanotechnology: Small particles + porous structure → very large surface.
After sintering the TiO2 films are stained with dye.

The counter electrode consists of a new conductive glass substrate, where a layer of graphite is deposited with a pencil.
The electrolyte consists of an ionic solution with the Iodine/Tri-Iodide redox couple.
leading power. It dripped onto a single layer tissue which is then clamped between the working and counter electrode.


Solar cell principle:
The dye absorbs energy from sunlight and transfers electrons to TiO2. The electrons diffuses through TiO2 contact.
There, they can perform electrical work in the external circuit.
Graphite acts as a catalyst and transfer electrons from cathode of the solar cell  to the redox electrolyte. From the transported electrons to the working electrode and reduces the dye to its ground state.