The low manufacturing cost of photovoltaics that employ thin films of cadmium-telluride semiconductor have long been seen as having the potential for lifting solar power from its niche status as a very expensive power source, delivering less than a twentieth of 1 percent of U.S. electricity.
Now, after two decades in which cadmium-telluride technology was dogged by low power output and reliability problems, it's suddenly elbowing its way into renewable-energy markets and competing with today's dominant solar technology: silicon solar panels. The company behind this technology turnaround is Phoenix-based First Solar, which says that the technology could eventually be cost competitive with conventional fossil-fuel sources of electricity.
