A novel one-pot room-temperature synthesis route to produce very small photoluminescent silicon nanocrystals

作者：Douglas Gallardo Oscar A; Burgos Paci Maxi A; Mendoza Cruz Ruben; Putnam Karl G; Arellano Jimenez M Josefina; Jose Yacaman Miguel; Mariscal Marcelo M; Macagno Vicente A; Sanchez Cristian G; Perez Manuel A^*

来源：Journal of Nanoparticle Research, 2018, 20(3): 85.

DOI：10.1007/s11051-018-4174-x

• Silicon quantumdots
• Photoluminescent silicon nanocrystals
• Synthesis
• Colloids

A novel strategy to synthesize photoluminescent silicon nanocrystals (SiNCs) from a reaction between tetraethylorthosilicate (TEOS) and trimethyl-hexadecyl-ammonium borohydride (CTABH(4)) in organic solvent is presented. The formation reaction occurs spontaneously at room temperature in homogeneous phase. The produced silicon nanocrystals are characterized by using their photoluminescent properties and via HRTEM. In addition, theoretical calculations of the optical absorption spectrum of silicon quantum dots in vacuum with different sizes and surface moieties were performed in order to compare with the experimental findings. The new chemical reaction is simple and can be implemented to produce silicon nanocrystal with regular laboratory materials by performing easy and safe procedures.

• 出版日期2018-3-22