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Toward The Next Generation Of High-efficiency Plastic Solar Cells

Date:
March 19, 2008
Source:
American Chemical Society
Summary:
Researchers report an advance toward the next generation of plastic solar cells, which are widely heralded as a low cost, environmentally-friendly alternative to inorganic solar cells for meeting rising energy demands. Plastic solar cells, fabricated from bulk heterojunction materials comprising semiconducting polymers and fullerenes, have already demonstrated promising performance.
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Researchers in the United States and Austria report an advance toward the next generation of plastic solar cells, which are widely heralded as a low cost, environmentally-friendly alternative to inorganic solar cells for meeting rising energy demands.

Alan J. Heeger and colleagues point out that plastic solar cells, fabricated from bulk heterojunction materials comprising semiconducting polymers and fullerenes, have already demonstrated promising performance.

However, researchers do not understand how to control the nano-scale morphology and are looking for ways to optimize the solar cell performance for practical use. Heeger, co-recipient of the Nobel Prize in Chemistry in 2000 for his pioneering research on conducting polymers, is widely recognized for his ongoing efforts to improve solar cell efficiencies.

In the new study, Heeger and colleagues found that adding a class of chemicals called alkanedithiols as processing additives improves both the morphology and the solar cell performance.

They showed that by utilizing alkanedithiols as processing additives, the efficiency of the plastic solar cells increased from 3.4 percent to 5.1 percent, among the highest efficiencies achieved to date for this type of solar cell.

"These data provide a better understanding of correlation between the nano-scale morphology of the bulk heterojunction film and the solar cell performance," the report states.

Journal reference:  "Processing Additives for Improved Efficiency from Bulk Heterojunction Solar Cells" Journal of the American Chemical Society, March 19, 2008. (http://dx.doi.org/10.1021/ja710079w)


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The above post is reprinted from materials provided by American Chemical Society. Note: Materials may be edited for content and length.


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American Chemical Society. "Toward The Next Generation Of High-efficiency Plastic Solar Cells." ScienceDaily. ScienceDaily, 19 March 2008. <www.sciencedaily.com/releases/2008/03/080317114050.htm>.
American Chemical Society. (2008, March 19). Toward The Next Generation Of High-efficiency Plastic Solar Cells. ScienceDaily. Retrieved June 30, 2015 from www.sciencedaily.com/releases/2008/03/080317114050.htm
American Chemical Society. "Toward The Next Generation Of High-efficiency Plastic Solar Cells." ScienceDaily. www.sciencedaily.com/releases/2008/03/080317114050.htm (accessed June 30, 2015).

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