Technology Offers



Grätzel Thin Film Solar Cells Incorporating Bismuth Compounds as Light Absorbing Components

The invention consists of a thin film solar cell built like a Grätzel cell, but using Bismuth compounds as light absorbing medium instead of for instance organic Ruthenium complexes or simultaneously as electrodes. The absorption characteristics can be modified via the type of Bismuth compounds being used. Furthermore the invention allows the cells to be structural utilized.

 

 

Eliminating Bowing of Thin Solar Cells through Brief Freezing

Solar cells are commonly manufactured from wafers which are between 270 and 330 µm thick. Using thinner wafers of about 200 µm or less the wafers are bowed after contacting, firing and cooling and the solar cells are unuseable for solar panels. With an easy technique of cooling to temperatures of about - 40°C for a short time the so called bow can be reduced or eliminated completely.