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New manufacture of crystals to revolutionise electronics?

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26.04.2019

It is not an easy task to create a high-quality ultrathin film - composed of single crystals that could be used in a variety of ways - at low cost.The newly-found method considerably reduces such expenses without the necessity for limiting the quality of final products, due to which innovative devices may enter our everyday lives even faster.

In order to make ultrathin crystalline films widely used (from solar cells to lasers), scientists dealing with materials need to use complex and expensive machines for laying down crystals in a way making them create a single atomic layer.These techniques result in creating thin films composed of single crystalline layers that have no breaks or other defects that might hinder their electronic and optical properties.Sadly, global manufacturers predominantly tend to use a cheap technique consisting in spinning liquids into the foil that hardens after having been applied to a specific surface.Such films rarely form a smooth film that is composed of a single crystalline layer - apparently, it makes them useful, while also resulting in much worse performance parameters.

However, scientists have discovered that it is possible to subject the liquids to supersaturation with precursor compounds in a way making them form many crystals that merge into a single and unbroken film in the course of spinning.The new approach - as they suggest - may improve the light parameters in solar cells known as perovskites, as well as increase the speed or effectiveness of flexible electronic devices.Those may be integrated with pretty much anything - from curved dashboards to fabrics.

Source: sciencemag.org

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