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Nanocrystals Outshine Laser Dyes

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Dr. James P. Smith

Semiconductor nanocrystals fabricated at Hebrew University produce a bright fluorescence radiation that can be size-tuned to the near-infrared. Chemists Uri Banin and Yun-Wie Cao's method for making the nanocrystals with an indium arsenide core and a shell of either indium phosphide or cadmium selenide was reported in Angewandte Chemie, International Edition (Vol. 38, 1999). Small crystals of semiconductors, those in the 2- to 20-nm range, are termed nanocrystals, or quantum dots. They have different optical properties from the bulk material. As more atoms are added, the properties of...Read full article

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    Published: March 2000
    Research & TechnologyTech PulseLasers

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