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: Researchers work to mitigate water scarcity crisis with solar-powered devices made of wood

Related Stories

Banking sun and wind energy

October 9, 2017

The EU has a hard goal: it wants the Member States to cut greenhouse gas emissions to a fifth, or even a tenth, of the present level by 2050.

Magnetic electrodes increase solar cell efficiency

October 3, 2017

An international research collaborative led by the Ikerbasque researcher Luis Hueso has developed a photovoltaic cell in which magnetic materials such as electrodes are used for the first time to provide current. The journal ...

Recommended for you

Scientists determine source of world's largest mud eruption

October 17, 2017

On May 29, 2006, mud started erupting from several sites on the Indonesian island of Java. Boiling mud, water, rocks and gas poured from newly-created vents in the ground, burying entire towns and compelling many Indonesians ...

2 comments

Adjust slider to filter visible comments by rank

Display comments: newest first

Doug_Huffman
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.
Valentiinro
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.