Thin Film’s Time in the Sun

[Technology Review] 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.

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