One of the most distinguishing features of Quantum Dots is their size-tunable emission properties. By changing the size of the QD, one can tune the color of light it emits when excited. This occurs because the energy levels in these nanoscale particles are quantized, leading to a phenomenon known as the quantum confinement effect. Smaller QDs emit light at shorter wavelengths (blue), while larger QDs emit light at longer wavelengths (red).
