Quantum Dot: a look into the future

Among the different technologies investigated in the lighting field, in the near future the Quantum Dot, whose testing phase has been going on for several years, could lead to interesting improvements in the quality of emitted light and production costs. 

Quantum dots are tiny man-made crystals. They are so small that can not be seen with a typical microscope. In fact, they’re 10,000 times narrower than a human hair. Quantum dots are actually very powerful devices and it’s their size that gives them a unique ability: to convert light into nearly any colour in the visible spectrum with very high efficiency.

The electronic characteristics of quantum dots are determined by their size and shape. The colour of light given off can be controlled just by changing the crystal's size. Bigger dots emit longer wavelengths like red, while smaller dots emit shorter wavelengths like green.