Synthesis of Semicondutor Nanocrystals in the Molten Inorganic Salt

With the size-tunable optoelectronic properties and scalable synthesis, colloidal quantum dots enable applications where inexpensive high-performance semiconductors are needed. Synthesis science breakthroughs have been key to the realization of quantum dot technologies. However, high-quality III-V materials cannot be synthesized by the existing method which utilizes high-boiling-point organic solvent. Herein, we report here a bunch of new methods that introduce molten inorganic salt as a solvent. By using dehalosilylation chemistry or redox chemistry, III-V nanocrystals could be made from molten inorganic salt. We also showed that high temperature is crucial to see a well-defined Raman signal which means that high temperature is important to eliminate the defects in the as-synthesized nanocrystals.