NZ Technology to cut solar prices by ten
Solar cell technology developed by Massey University’s Nanomaterials Research Centre in New Zealand may one day enable the country’s residents to generate electricity from sunlight at a tenth of the cost of current silicon-based photovoltaic solar cells. Dr. Wayne Campbell and researchers in the Centre have developed a range of colored dyes for use in dye-sensitized solar cells.
The synthetic dyes are made from simple organic compounds closely related to those found in nature.
Green dye is synthetic chlorophyll derived from the light-harvesting pigment plants use for photosynthesis. Other dyes being tested in the cells are based on haemoglobin, the compound that gives blood its color.
Unlike the silicon-based solar cells currently on the market, says Dr. Campbell, the 10x10cm green demonstration cells generate enough electricity to run a small fan in low-light conditions — making them ideal for cloudy climates. The dyes can also be incorporated into tinted windows that trap to generate electricity.