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Silver nanoparticles give polymer solar cells a boost

Researchers at Ohio State University discovered that adding silver nanoparticles to plastic boosts electrical current generation in polymer semiconductors, increasing efficiency. The new fabrication technique allows for a wider range of wavelength absorption, promising advancements toward commercially viable solar cells.

SourceOhio State University·JournalSolar Energy Materials and Solar Cells·DateOct 5, 2009

More to solar cycle than sunspots; sun also bombards Earth with high-speed streams of wind

Scientists have found that the number of sunspots provides an incomplete measure of changes in the Sun's impact on Earth over the course of the 11-year solar cycle. High-speed streams of wind from the Sun intensify the energy of Earth's outer radiation belt, posing hazards to satellites and space travelers.

Solar cycle linked to global climate

Research by NSF-funded scientists reveals a scientifically feasible link between the 11-year solar cycle and ENSO, influencing climate variability globally. The study suggests that maximum solar activity can drive La Niña-like events with similar impacts on global temperature and precipitation patterns.

SourceU.S. National Science Foundation·JournalJournal of Climate·DateJul 16, 2009

A bright future with solar lanterns for India's poor

The study found that solar lanterns significantly reduced kerosene and electricity costs, with annual savings ranging from $150 to $250. Solar lanterns also improved household work efficiency for women and increased school hours for children, benefiting rural Indian communities.

SourceSpringer·JournalHuman Ecology·DateApr 27, 2009

Getting into hot water

A solar water-heating system has a payback period of just two years and effectively pays for itself five times over within its twenty-year lifespan. Researchers found that solar heating is 57% of the internal rate of return compared to electrical energy approaches.

SourceInderscience Publishers·JournalInternational Journal of Global Energy Issues·DateMar 9, 2009

Enhancing solar cells with nanoparticles

Researchers have developed a new method to boost the efficiency of solar cells by using nanoparticles. By scattering light and improving color-specific capture, this approach could significantly improve sunlight conversion rates.

SourceOptica·JournalOptics Express·DateDec 23, 2008

Alternative energy hits the road

Researchers at Worcester Polytechnic Institute have created a solar collector system that can harness heat from asphalt roads and parking lots to generate electricity and hot water. The technology has the potential to reduce urban 'heat island' effects and provide a cost-effective source of renewable energy.

New efficiency record for solar cells

Researchers at Eindhoven University of Technology and Fraunhofer Institute achieved an unprecedented 6% improvement in solar cell efficiency by depositing a thin layer of aluminum oxide on the front of a silicon solar cell. This breakthrough brings the industrial application of high-efficiency solar cells closer, with costs expected to...

SourceEindhoven University of Technology·JournalApplied Physics Letters·DateMay 14, 2008

NASA calls on APL to send a probe to the sun

The Solar Probe mission will study the streams of charged particles emitted by the sun, exploring the processes that heat its corona and produce solar wind. The spacecraft will zip past the sun at speeds up to 125 miles per second, gathering data on magnetic fields, energy flow, and energetic particle formation.

DOE grant funds solar energy project

A Penn State researcher is developing solar cells with titanium dioxide nanotubes and organic semiconductors for efficient and low-cost large-scale solar energy conversion. The goal is to achieve photconversion efficiencies of 6-8% and commercialize the technology.

Special coating greatly improves solar cell performance

Researchers at Northwestern University have developed a new anode coating strategy that significantly enhances the efficiency of solar energy power conversion. The breakthrough could lead to cheaper, more manufacturable, and easily implemented solar cells, reducing dependence on fossil fuels and carbon dioxide emissions.

SourceNorthwestern University·JournalProceedings of the National Academy of Sciences·DateFeb 22, 2008

Solar cells can take the heat

Researchers have developed a new type of solar cell that uses a binary ionic liquid electrolyte, achieving a record 7.6% light-conversion efficiency and stability in warm climates. The solvent-free design also enables the construction of flexible and lightweight devices.

SourceWiley·JournalSmall·DateJan 9, 2008

Solar cells of the future

Researchers at University of Copenhagen have discovered a new material that can convert up to 30% of solar energy into electricity, twice the current conversion rate. The use of nanotechnology reduces production costs and minimizes energy loss in solar cell transportation.

SourceUniversity of Copenhagen·JournalNature Nanotechnology·DateDec 18, 2007