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Optical materials news, December 2015

No reflection on one direction

A tenable diode for photons

Top 5 news items of 2015 from Materials Today.

By developing a way to line up three gold nanoparticles of increasing size, scientists have developed a nanolens for focusing light.

A new anti-reflection coating made up of metal nanopillars lets light through without hampering the flow of electricity in optoelectronic devices.

A new germanium nanofilm not only shimmers like an opal but is hard as a crystal, exceptionally thin and highly porous.

Adding minuscule silicon pillars to the surface of a solar cell can more than double the amount of energy it produces.

Nanoscale octopods made of gold and palladium can do double duty as catalysts and plasmonic sensors.

Using an organic superacid to fix defects in molybdenum disulphide produced a 100-fold increase in its photoluminescence quantum yield.

Researchers have produced tandem solar cells from polycrystalline thin films, using a method that is suitable for mass production.

A new method for manufacturing 3D nanostructures uses a mask that can define a pattern on two sides of a silicon wafer simultaneously.

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