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Ultra-small nanocrystals are nanoscale materials. Since the size of ultra-small nanocrystals is comparable to or even smaller than the Bohr exciton diameter of the materials, ultra-small nanocrystals exhibit significant enhanced physical properties, such as magnetic, optical and electronic properties. As the size of a nanocrystal becomes smaller quantum effects, increased astoichiometry, and defects can give rise to many interesting property transitions, including a metal to semiconductor transition, and a diamagnetic to ferromagnetic transition. Facile colloidal synthesis of ultra-small…mehr

Produktbeschreibung
Ultra-small nanocrystals are nanoscale materials. Since the size of ultra-small nanocrystals is comparable to or even smaller than the Bohr exciton diameter of the materials, ultra-small nanocrystals exhibit significant enhanced physical properties, such as magnetic, optical and electronic properties. As the size of a nanocrystal becomes smaller quantum effects, increased astoichiometry, and defects can give rise to many interesting property transitions, including a metal to semiconductor transition, and a diamagnetic to ferromagnetic transition. Facile colloidal synthesis of ultra-small nanocrystals allows one to explore the interesting optical, magnetic, and electrical properties of these materials with extremely small sizes at the nanoscale. The research on the synthetic chemistry as well as the physical properties of these ultra-small nanocrystals helps to enhance the applicability of these nanocrystals in device applications. A necessary step towards the application of thesenanocrystals is their uniform film assembly. The efficient film deposition technique, as presented in this work, facilitates greatly the application of the nanocrystals in device fabrication.
Autorenporträt
Weidong He is a Professor in the School of Energy Science and Engineering at the University of Electronic Science and Technology of China. He received his Ph.D. degree in materials science from Vanderbilt University in 2012. He then went to PNNL for his postdoctoral research. He mainly researches low-dimension crystals and energy materials/devices.