Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine-Trioctylphosphine Oxide-Trioctylphospine Mixture

Dmitri V Talapin; Andrey L Rogach; Andreas Kornowski; Markus Haase; Horst Weller

doi:10.1021/nl0155126

Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine-Trioctylphosphine Oxide-Trioctylphospine Mixture

Nano Lett. 2001 Apr;1(4):207-211. doi: 10.1021/nl0155126.

Authors

Dmitri V Talapin¹, Andrey L Rogach¹, Andreas Kornowski¹, Markus Haase¹, Horst Weller¹

Affiliation

¹ Institute of Physical Chemistry, University of Hamburg, Bundesstrasse 45, 20146 Hamburg, Germany.

PMID: 35897166
DOI: 10.1021/nl0155126

Abstract

Highly monodisperse CdSe nanocrystals were prepared in a three-component hexadecylamine-trioctylphosphine oxide-trioctylphosphine (HDA-TOPO-TOP) mixture. This modification of the conventional organometallic synthesis of CdSe nanocrystals in TOPO-TOP provides much better control over growth dynamics, resulting in the absence of defocusing of the particle size distribution during growth. The room-temperature quantum efficiency of the band edge luminescence of CdSe nanocrystals can be improved to 40-60% by surface passivation with inorganic (ZnS) or organic (alkylamines) shells.