IEC 62607-3-1:2014
(Main)Nanomanufacturing - Key control characteristics - Part 3-1: Luminescent nanomaterials - Quantum efficiency
Nanomanufacturing - Key control characteristics - Part 3-1: Luminescent nanomaterials - Quantum efficiency
IEC 62607-3-1:2014 describes the procedures to be followed and precautions to be observed when performing reproducible measurements of the quantum efficiency of luminescent nanomaterials. Luminescent nanomaterials covered by this method include nano-objects such as quantum dots, nanophosphors, nanoparticles, nanofibers, nanocrystals, nanoplates, and structures containing these materials. The nanomaterials may be dispersed in either a liquid state (e.g., colloidal dispersion of quantum dots) or solid-state (e.g., nanofibers containing luminescent nanoparticles). This standard covers both relative measurements of liquid state luminescent nanomaterials and absolute measurements of both solid and liquid state nanomaterials. Key words: nanotechnology, nano, naloleds
Nanofabrication - Caractéristiques de contrôle clé - Partie 3-1: Nanomatériaux luminescents - Rendement quantique
L'IEC 62607-3-1:2014 décrit les procédures à suivre et les précautions à prendre pour effectuer des mesures reproductibles de rendement quantique sur les nanomatériaux luminescents. Les nanomatériaux luminescents concernés comprennent des nano-objets tels que les points quantiques, les nanoluminophores, les nanoparticules, les nanofibres, les nanocristaux et les nanofeuillets, ainsi que les structures dans lesquelles ils se trouvent. Les nanomatériaux peuvent être dans un état liquide (par exemple, dispersion colloïdale de points quantiques) ou solide (par exemple, nanofibres avec des nanoparticules luminescentes). Cette norme traite des mesures relatives réalisées sur les nanomatériaux luminescents à l'état liquide, ainsi que des mesures absolues réalisées sur les nanomatériaux à l'état solide et liquide. Mots clé: nanotechnologie, nano, nanoleds
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Standards Content (Sample)
IEC 62607-3-1 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nanomanufacturing – Key control characteristics
Part 3-1: Luminescent nanomaterials – Quantum efficiency
Nanofabrication – Caractéristiques de contrôle clé
Partie 3-1: Nanomatériaux luminescents – Rendement quantique
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IEC 62607-3-1 ®
Edition 1.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Nanomanufacturing – Key control characteristics
Part 3-1: Luminescent nanomaterials – Quantum efficiency
Nanofabrication – Caractéristiques de contrôle clé
Partie 3-1: Nanomatériaux luminescents – Rendement quantique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX V
ICS 07.030 ISBN 978-2-8322-1605-7
– 2 – IEC 62607-3-1:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General notes on tests . 10
4.1 General . 10
4.2 Ambient onditions . 10
4.3 Photobrightening and photobleaching . 10
4.4 Luminescence from contaminants at Illumination wavelengths < 380 nm . 10
4.5 Industrial hygiene . 11
5 Measurement of relative quantum efficiency of nanomaterials . 11
5.1 General . 11
5.2 Test equipment . 11
5.2.1 Required supplies and test equipment . 11
5.2.2 Test equipment setup . 12
5.3 Calibration . 12
5.3.1 General . 12
5.3.2 Calibration standard − preparation . 13
5.3.3 Calibration standard – test measurements . 13
5.4 Experimental procedure . 14
5.4.1 Calibration standard − experimental measurements . 14
5.4.2 Luminescent nanoparticle sample − Experimental
measurements . 15
6 Measurement of absolute quantum efficiency of nanomaterials . 17
6.1 General . 17
6.2 Test equipment . 18
6.3 Calibration . 20
6.4 Sample preparation . 20
6.4.1 General . 20
6.4.2 Liquid samples . 20
6.4.3 Solid state samples . 21
6.5 Test procedure . 21
6.5.1 Collimated incident light method . 21
6.5.2 Diffuse incident light method . 24
7 Uncertainty statement . 27
8 Test report . 27
Annex A (informative) Temperature quenching of quantum efficiency, light modulation
considerations for avoiding sample heating, and achieving the best measurement
conditions . 28
A.1 Overview. 28
A.2 Addressing TQE . 28
Bibliography . 30
Figure 1 – Sample absorbance spectrum of cresyl violet – example calculations . 14
Figure 2 – Schematic of the test equipment configuration for both the collimated
incident light and diffuse incident light methods . 18
Figure 3 – Sample spectrum for collimated incident light method . 23
Figure 4 – Sample spectra for the diffuse incident light method. 26
Figure A.1 – Example of transient behaviour of luminescent material (YAG:Ce) under
pulsed excitation . 28
Figure A.2 – Schematic diagram of variation of normalised QE with average excitation
power and the preferred range of input power (indicated by vertical lines) . 29
Table 1 – Example fluorescence methods for relative measurements . 12
Table 2 – Suggested calibration standards for relative quantum efficiency
measurements of luminescent nanoparticle solutions . 13
Table 3 – Spreadsheet format for quantum efficiency data comparisons . 16
Table 4 – Spreadsheet format for quantum efficiency data comparisons . 17
Table 5 – Comparison of methods for measuring the absolute quantum efficiency of
luminescent nanoparticles. 18
– 4 – IEC 62607-3-1:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
NANOMANUFACTURING –
KEY CONTROL CHARACTERISTICS
Part 3-1: Luminescent nanomaterials –
Quantum efficiency
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