Here is a cool experiment by the well known laser dude styropyro!

This experiment works by utilizing liquid nitrogen to cool the semiconductor to -196ºC, robbing it of much of its thermal energy. This causes the “bandgap” energy to increase, thereby increasing the emitted photon energy and decreasing the emission wavelength.

Oodles of liquid nitrogen definitely is a perk of working in a NMR lab. 😀

Needless to say do not try this at this without the supervision of a professional!

Let’s see what happens in the video on page 2

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