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

Quimica nova

Alves, José Luiz Aarestrup¹  Ferreira, Diego Lourençoni¹  Silva, Fernanda Oliveira¹  Viol, Lívia Cristina de Souza¹  Schiavon, Marco Antônio¹ 

[1] Universidade Federal de São João Del Rei, São João Del Rei, Brasil

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-preparativesize-selective precipitation technique was applied in CdTe and CdSe semiconductornanocrystals prepared via colloidal route in water. The synthesis of CdTe andCdSe nanoparticles and the effect of the post-preparative size-selective precipitationhave been characterized mainly by mean of ultraviolet and visible absorptionspectroscopy (UV-Vis). It was demonstrated that the size-selective precipitationare able to isolate particles of different sizes and purify the nanoparticlesas well.

【 授权许可】

CC BY