Photovoltaic Breakthroughs Brighten Outlook for Cheap Solar Power
Tuesday, February 16, 2010 - 15:14
in Physics & Chemistry
Enough sunlight bathes Earth's daytime half in an hour to meet all human energy needs for a year. Sadly, there are several problems with meeting human energy demands by tapping such abundant, free solar power--not least of which is the cost of making semiconducting material that can cheaply harvest the power in sunlight. But material improvements from the California Institute of Technology and IBM might just lower the cost of solar power. [More]