ISO/TS TECHNICAL SPECIFICATION 17466 First edition 2015-08-01 Use of UV-Vis absorption spectroscopy in the characterization of cadmium chalcogenide colloidal quantum dots Utilisation de la spectroscopie d'absorption dans I'UV-visible pour la caractérisation des points quantiques colloidaux des chalcogénures de cadmium Reference number IS0/TS 17466:2015(E) SO International Organization for Standardization @ IS0 2015 Institute of Sta dardization 5956617 vided by IHS under I ted without license from IHS IS0/TS 17466:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenatinair PrganizationforStandardization Not for Resale, 2015/11/11 08:35:03 etworking permitted without license from IHS IS0/TS 17466:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Terms, definitions, and abbreviated terms. 2.1 Terms and definitions 1 2.2 Abbreviated terms. 1 3 Principle .2 3.1 General 2 3.2 UV-Vis absorption spectroscopy 2 3.3 Absorption peaks of quantum dots in the UV-Vis region 2 3.4 Relation between quantum dot diameter and optical absorption peak wavelength 3.5 Relation between quantum dot concentration and optical absorption peak intensities... 4 3.5.1 Normalization of absorbance A for samples with wide size distributions ..4 3.5.2 Derivation of extinction coefficient from particle size. ..4 4 Sample preparation .5 5 Measurement procedure .5 5.1 UV-Vis spectrometer .5 5.2 Optical measurement procedure .5 5.3 Recommended conditions. .5 6 Data analysis and interpretation of results .5 6.1 Data analysis for approximation of QD size .6 6.2 Data analysis for characterization of QD concentration . 6 7 Measurement uncertainty .6 8 Test report .6 Annex A (informative) Case study for determining the diameters of CdSe QDs from Uv-Vis absorptionspectra .8 Annex B (informative) Case study for determining the number concentrations of CdSe QDs in a dispersion .15 Bibliography .18 iii thout license from IHS