By Ashley Yeager, 09:49 AM May 2, 2014
Getting excited can kick a person’s energy to a higher level. At the nanoscale, strange almost-particles called excitons do the same trick.
In a crystal, thin film or even some liquids, an incoming particle of light can slam into an electron, bumping it to a higher energy level and leaving a hole at the energy level where the particle had been. The exciton is the excited electron paired with the resulting hole and can move energy in two ways: by physically hopping to a new molecule or transfer...
Source URL: https://www.sciencenews.org/article/exciton