Possible Solar Technology Breakthrough out of South Africa

A team of South African scientists led by University of Johannesburg professor Vivian Alberts has invented a solar power technology that is not only more efficient than current solar power solutions, but can be produced for, they claim, a fraction of the cost. From the article:

The South African solar panels consist of a thin layer of a unique metal alloy that converts light into energy. The photo-responsive alloy can operate on virtually all flexible surfaces, which means it could in future find a host of other applications.

The new panels are 5 microns thick, allowing for a tremendous efficiency improvement over older solar panels that measure about 350 microns thick.

Science in Africa has a November 2004 article with some additional details:

Prof Vivian Alberts of the Department of Physics at the Rand Afrikaans University in South Africa and team have developed and patented a novel manufacturing technique that finally makes it possible to construct CIGS solar panels at a very low cost. The method is easily upscalable to industrial output levels, while remaining much cheaper to produce than conventional silicon solar panels.

Work done over the last two years indicates that panels can be produced in commercial volumes at a cost of about R 500 for a 50 Watt panel. This is much cheaper than existing solar panels available on the market. CIGS is a remarkably stable material and conversion efficiencies should be sustainable for 15-20 years in any given panel.

It will be interesting to see if this technology is able to gain traction and catch on, offering both humanitarian and eco-friendly benefits to the world. Also worth watching is the film-thin photovoltaic solar strips developed by Nobel laureate Alan Heeger's Konarka.