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Artificial atoms or Quantum Dots are considered as important parts of nanotechnology. These are mainly group of atoms obtained from semiconductor based items that include cadmium sulphide and molybdenum sulphide. Offered atoms produce lights when energized. Frequency and wavelength of color of produced lights depend on the type of atoms present in these Quantum Dots. Several electrons of these dots tend to break free from the group of atoms during their illumination by UV light. These are extensively used for improving operation of solar cells. Research works are going on to explore potentiality of these artificial atoms in optimizing functions of display screens.