Easing concerns about pollution from manufacture of solar cells

February 25, 2008

In a finding that could help ease concerns about the potential environmental impact of manufacturing solar cells, scientists report that the manufacture of solar cells produces far fewer air pollutants than conventional fossil fuel technologies. Their report, the first comprehensive study on the pollutants produced during the manufacture of solar cells, is scheduled for the March 15 issue of the ACS' Environmental Science & Technology.

Solar energy has been touted for years as a safer, cleaner alternative to burning fossil fuels to meet rising energy demands.

However, environmentalists and others are increasingly concerned about the potential negative impact of solar cell (photovoltaic) technology. Manufacture of photovoltaic cells requires potentially toxic metals such as lead, mercury and cadmium and produces carbon dioxide, which contributes to global warming.

In the new study, Vasilis M. Fthenakis and colleagues gathered air pollution emissions data from 13 solar cell manufacturers in Europe and the United States from 2004-2006. The solar cells include four major commercial types: multicrystalline silicon, monocrystalline silicon, ribbon silicon, and thin-film cadmium telluride.

The researchers found that producing electricity from solar cells reduces air pollutants by about 90 percent in comparison to using conventional fossil fuel technologies.

Source: ACS

Explore further: Ultrathin lens could revolutionise next-gen devices

Related Stories

Ultrathin lens could revolutionise next-gen devices

September 23, 2015

Researchers at Swinburne University of Technology, collaborating with Monash University, have developed an ultrathin, flat, ultra-lightweight graphene oxide optical lens with unprecedented flexibility.

The precision of solar photovoltaic power measurements doubled

September 18, 2015

An analysis carried out by JRC scientists shows that the uncertainty in measurement of power generation from a photovoltaic (PV) cell can be more than halved, thus bringing an economic benefit to both manufacturers and investors. ...

Recommended for you

Asteroid impact, volcanism were one-two punch for dinosaurs

October 1, 2015

Berkeley geologists have uncovered compelling evidence that an asteroid impact on Earth 66 million years ago accelerated the eruptions of volcanoes in India for hundreds of thousands of years, and that together these planet-wide ...

History shows more big wildfires likely as climate warms

October 5, 2015

The history of wildfires over the past 2,000 years in a northern Colorado mountain range indicates that large fires will continue to increase as a result of a warming climate, according to new study led by a University of ...


Adjust slider to filter visible comments by rank

Display comments: newest first

not rated yet Feb 25, 2008
Ahh, there are pollutants other than in air. I would not expect to find Pb, Hg, Cd in air at all.

Dilution is the solution to pollution. Each of these is derived from a dilute natural source, return them whence they cam.
not rated yet Feb 26, 2008
If people were especially concerned about this it probably wouldn't be too hard to develop capturing technologies for these pollutants anyway. Much like the carbon capture ideas for coal power plants.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.