Use of UV-Vis absorption spectroscopy in the characterization of cadmium chalcogenide colloidal quantum dots

Use of UV-Vis absorption spectroscopy in the characterization of cadmium chalcogenide colloidal quantum dots

Standard Number ISO/TS 17466:2015
Organization International Organization for Standardization World
Level International
Category Test Method | Characterization | Measurement
Status
  • AUG 2015 Published
  • DEC 2018 Reviewed and Confirmed
ABSTRACT
ISO/TS 17466:2015 provides guidelines for estimating the diameter and the number concentration of monodisperse cadmium chalcogenide (CdTe, CdSe, CdS) quantum dots (QDs) with a narrow size distribution in a colloidal dispersion using Ultraviolet-visible (UV-Vis) absorption spectroscopy. The analysis of the spheroidal particle size is applicable to the diameter range of 3,5 nm to 9 nm for CdTe, 1 nm to 8 nm for CdSe, and 1 nm to 5,5 nm for CdS and is recommended for samples with narrow size distributions.