Inorganic nanocrystals tagged posts

New research puts us closer to DIY Spray-on Solar Cell Technology

Non-toxic food additive, ammonium chloride replaces conventional heavy metal cadmium salt treatment in solution processed nanocrystal solar cells by providing a dual role for native ligand exchange reactions and as a sintering agent.

—promising 3rd-gen solar cells utilizing a nanocrystal ink deposition that could make traditional expensive silicon-based solar panels a thing of the past. While progress on organic thin-film photovoltaics is rapidly growing, inorganic devices still hold the record for highest efficiencies which is in part due to their broad spectral absorption and excellent electronic properties.

A major disadvantage compared to organics, however, is that inorganic materials are difficult to deposit from solution. To overcome this, Townsend synthesized materials on the nanoscale. Inorganic nanocrystals encased in an organic ligand shell are soluble in organic solvents and can be deposited from solution (i.e...

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