Determination of absolute luminescence quantum yields of luminescing nanomaterials over a broad spectral range: From the integrating sphere theory to the correct methodology

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10290878" target="_blank" >RIV/00216208:11320/14:10290878 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1080/21642311.2014.884288" target="_blank" >http://dx.doi.org/10.1080/21642311.2014.884288</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/21642311.2014.884288" target="_blank" >10.1080/21642311.2014.884288</a>

Result language

angličtina

Original language name

Determination of absolute luminescence quantum yields of luminescing nanomaterials over a broad spectral range: From the integrating sphere theory to the correct methodology

Original language description

Determination of fluorescence or photo- and electro-luminescence quantum yield (QY) is of increasing importance for standardization of novel light-emitting materials like semiconductor quantum dots. The most straightforward spectroscopic QY measurement technique is based on the exploitation of an integrating sphere (IS). We propose a compact set-up and procedure for reliable measurements of QY over a broad excitation spectral range which uses excitation by light-emitting diodes. Starting from the general IS theory we show that (i) a variable excitation pattern has no fatal influence on the QY determination and (ii) a simple two-configuration experiment is an adequate basis of the correct experimental procedure. Then we give guidelines for the QY experiment and calculations as well as a few practical examples and error analysis. Our comprehensive description of absolute luminescenceQYtechniques based on the IS theory has a general applicability not restricted to the apparatus described

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2014

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanoscience Methods

ISSN

2164-2311

e-ISSN

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Volume of the periodical

3

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

11-27

UT code for WoS article

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EID of the result in the Scopus database

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