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Researchers make cells with near-perfect internal efficiency.
The first prototype cell to use photonic crystals looks promising.
A new type of silicon promises cheaper, more-sensitive light detectors.
Photovoltaics made of nanowires could lead to cheaper solar panels.
Astrowatt’s wafer-making method could mean cheaper solar power.
A performance boost for “small-molecule” solar cells could make the materials more practical.
Metamaterials that convert lower-energy photons to usable wavelengths could offer solar cells an efficiency boost.
Thin-film silicon solar cells are more efficient with tiny holes in the back electrical contact.
A simple way to deposit thin films of carbon could lead to cheaper solar cells.