Preparation of cadmium selenide colloidal quantum dots in non-coordinating solvent octadecene

[摘要] Nearly monodisperse cadmium selenide quantum dots (QDs) were synthesized in non-coordinating solvent octadecene through phosphine-free method using oleic acid as surfactant. Selenium powder suspension in octadecene obtained by ultrasound processing was used as one of precursor solutions. Influence of multiple selenium precursor injections on nanocrystal growth process was investigated. Nanoparticles were characterized by means of absorption and photoluminescence spectroscopies.

[发布机构] Saint Petersburg Electrotechnical University LETI, ul. Prof. Popova, 5, 197376, Russia^1

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Absorption and photoluminescence;Cadmium selenides;Colloidal quantum dots;Coordinating solvents;Nanocrystal growth;Precursor injection;Precursor solutions;Selenium powder