Size-selective precipitation in colloidal semiconductor nanocrystals of CdTe and CdSe: a study by UV-VIS spectroscopy

Química Nova

Universidade Federal de São João Del Rei, São João Del Rei, Brasil¹  Alves, José Luiz Aarestrup¹  Ferreira, Diego Lourençoni¹  Silva, Fernanda Oliveira¹  Viol, Lívia Cristina de Souza¹  Schiavon, Marco Antônio¹ 

关键词: quantum dots;    size-selective precipitation;    semiconductors.;   

DOI  :  10.1590/S0100-40422011000400008

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

The post-preparative size-selective precipitation technique was applied in CdTe and CdSe semiconductor nanocrystals prepared via colloidal route in water. The synthesis of CdTe and CdSe nanoparticles and the effect of the post-preparative size-selective precipitation have been characterized mainly by mean of ultraviolet and visible absorption spectroscopy (UV-Vis). It was demonstrated that the size-selective precipitation are able to isolate particles of different sizes and purify the nanoparticles as well.

【 授权许可】

Unknown