'Quantum Dots' is term referred as semiconductor nanocrystal. Since it was in nanocrystal, the atoms or ions are having crystalline arrangement of constituent atoms/ion. Semiconductor quantum dots is a particle of small matter that addition or removal of an electron able to change the properties in semiconductors. All atoms are believed to be in Quantum structures. Some multimolecular combination are having this characteristics. In nanotechnology, quantum dots is known as Quantum bits of qubits. The size of quantum dots are 1 nanometer.

Nanocrystals have the following properties:

  1. Monodispersity
  2. Possibility of further chemical derivatizon
  3. High degree of crystallinity and specificity to avoid the polymorphic phase
  4. Chemical Integrity
  5. Lack of defects