Quantum Dots
Quantum dots are crystalline semiconductor materials with diameters ranging from 2-10 nanometers, making them small enough to exhibit quantum mechanical properties. Specifically, in quantum dots the crystal’s diameter is smaller than the size of the material’s exciton Bohr radius, leading to quantum confinement. The materials therefore exhibit electronic and optical properties that are tunable based on manipulation of the precise particle size. One common phenomena seen in quantum dots is fluorescence, which has been exploited in light-emitting devices such as LEDs and diode lasers. Additionally, quantum dots are being investigated as labeling agents for medical imaging, light absorbing materials for solar cells, and quibits in quantum computing.