Yeah Science, Bitch

53 Views • Created June 29, 2015 By styropyro • Updated March 23, 2023

Created By styropyro • Updated March 23, 2023

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LEDs and Lasers in Liquid Nitrogen!!

Origin Entry: Yeah Science, Bitch
Description

Here my labmates and I change the color of LEDs and lasers by freezing them with liquid nitrogen!! 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.

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