Characterisation of fluorescence standard materials

Priit Jaanson, Farshid Manoocheri, Erkki Ikonen

Research output: Contribution to conferenceConference AbstractScientific

Abstract

Fluorescence is an important property when determining the colour and appearance of a solid opaque material. Relative and absolute measurements of angular fluorescence spectra and quantum yield are important in many industrial fields including paper, textile and also in medical industry. The uncertainty of the measurements is naturally dependent on the uncertainty of the reference standards and therefore it is important to have high-accuracy calibration instruments capable of absolute measurements. Lambertian behaviour of fluorescent emission in solid amorphous materials is a commonly made assumption. Deviation from this behaviour has been shown [1][2] by using goniometric measurements of fluorescence [3][4].This finding is significant since most commercial and research instruments are limited to fixed geometry measurements and usually rely on the assumption of Lambertian emission of fluorescence. This may result in errors in inter geometry measurements of fluorescence and also absolute quantum yield estimations. To address these challenges, either more Lambertian standard materials or reliable methods to correct for these effects are needed. Figure 1. The relative luminescent radiance factors ?L and reflected radiance factors ?R at peak emission wavelength for each sample and reflected wavelength (380 nm) respectively. In this work bispectral luminescent radiance factors and reflected radiance factors of a number of commercially available fluorescence standards and a novel standard material candidate have been measured in a wavelength range from 380 nm to 700 nm with an uncertainty (k=2) of 1%. The angular distribution of the emitted radiation from the standard materials is in addition to being non-Lambertian also shown to be different from the angular distribution of reflected radiation as seen on Figure 1. The novel sample is shown to exhibit more Lambertian emission and reflection behaviour than the commercially available standard materials. In addition the effects of the angular profiles of measured radiation on the absolute quantum yield estimation of the materials are shown.
Original languageEnglish
Publication statusPublished - 2015
EventPTB International Summer School on Metrology - Drübeck, Germany
Duration: 24 Aug 201528 Aug 2015

Course

CoursePTB International Summer School on Metrology
CountryGermany
CityDrübeck
Period24/08/1528/08/15

Fingerprint

fluorescence
radiance
angular distribution
wavelengths
textiles
amorphous materials
reflected waves
radiation
geometry
industries
deviation
color
profiles

Keywords

  • fluorescence
  • goniometrical
  • uncertainty
  • measurement

Cite this

Jaanson, P., Manoocheri, F., & Ikonen, E. (2015). Characterisation of fluorescence standard materials. Abstract from PTB International Summer School on Metrology, Drübeck, Germany.
Jaanson, Priit ; Manoocheri, Farshid ; Ikonen, Erkki. / Characterisation of fluorescence standard materials. Abstract from PTB International Summer School on Metrology, Drübeck, Germany.
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title = "Characterisation of fluorescence standard materials",
abstract = "Fluorescence is an important property when determining the colour and appearance of a solid opaque material. Relative and absolute measurements of angular fluorescence spectra and quantum yield are important in many industrial fields including paper, textile and also in medical industry. The uncertainty of the measurements is naturally dependent on the uncertainty of the reference standards and therefore it is important to have high-accuracy calibration instruments capable of absolute measurements. Lambertian behaviour of fluorescent emission in solid amorphous materials is a commonly made assumption. Deviation from this behaviour has been shown [1][2] by using goniometric measurements of fluorescence [3][4].This finding is significant since most commercial and research instruments are limited to fixed geometry measurements and usually rely on the assumption of Lambertian emission of fluorescence. This may result in errors in inter geometry measurements of fluorescence and also absolute quantum yield estimations. To address these challenges, either more Lambertian standard materials or reliable methods to correct for these effects are needed. Figure 1. The relative luminescent radiance factors ?L and reflected radiance factors ?R at peak emission wavelength for each sample and reflected wavelength (380 nm) respectively. In this work bispectral luminescent radiance factors and reflected radiance factors of a number of commercially available fluorescence standards and a novel standard material candidate have been measured in a wavelength range from 380 nm to 700 nm with an uncertainty (k=2) of 1{\%}. The angular distribution of the emitted radiation from the standard materials is in addition to being non-Lambertian also shown to be different from the angular distribution of reflected radiation as seen on Figure 1. The novel sample is shown to exhibit more Lambertian emission and reflection behaviour than the commercially available standard materials. In addition the effects of the angular profiles of measured radiation on the absolute quantum yield estimation of the materials are shown.",
keywords = "fluorescence, goniometrical, uncertainty, measurement",
author = "Priit Jaanson and Farshid Manoocheri and Erkki Ikonen",
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Jaanson, P, Manoocheri, F & Ikonen, E 2015, 'Characterisation of fluorescence standard materials' PTB International Summer School on Metrology, Drübeck, Germany, 24/08/15 - 28/08/15, .

Characterisation of fluorescence standard materials. / Jaanson, Priit; Manoocheri, Farshid; Ikonen, Erkki.

2015. Abstract from PTB International Summer School on Metrology, Drübeck, Germany.

Research output: Contribution to conferenceConference AbstractScientific

TY - CONF

T1 - Characterisation of fluorescence standard materials

AU - Jaanson, Priit

AU - Manoocheri, Farshid

AU - Ikonen, Erkki

N1 - HUO: poster presentation and abstract

PY - 2015

Y1 - 2015

N2 - Fluorescence is an important property when determining the colour and appearance of a solid opaque material. Relative and absolute measurements of angular fluorescence spectra and quantum yield are important in many industrial fields including paper, textile and also in medical industry. The uncertainty of the measurements is naturally dependent on the uncertainty of the reference standards and therefore it is important to have high-accuracy calibration instruments capable of absolute measurements. Lambertian behaviour of fluorescent emission in solid amorphous materials is a commonly made assumption. Deviation from this behaviour has been shown [1][2] by using goniometric measurements of fluorescence [3][4].This finding is significant since most commercial and research instruments are limited to fixed geometry measurements and usually rely on the assumption of Lambertian emission of fluorescence. This may result in errors in inter geometry measurements of fluorescence and also absolute quantum yield estimations. To address these challenges, either more Lambertian standard materials or reliable methods to correct for these effects are needed. Figure 1. The relative luminescent radiance factors ?L and reflected radiance factors ?R at peak emission wavelength for each sample and reflected wavelength (380 nm) respectively. In this work bispectral luminescent radiance factors and reflected radiance factors of a number of commercially available fluorescence standards and a novel standard material candidate have been measured in a wavelength range from 380 nm to 700 nm with an uncertainty (k=2) of 1%. The angular distribution of the emitted radiation from the standard materials is in addition to being non-Lambertian also shown to be different from the angular distribution of reflected radiation as seen on Figure 1. The novel sample is shown to exhibit more Lambertian emission and reflection behaviour than the commercially available standard materials. In addition the effects of the angular profiles of measured radiation on the absolute quantum yield estimation of the materials are shown.

AB - Fluorescence is an important property when determining the colour and appearance of a solid opaque material. Relative and absolute measurements of angular fluorescence spectra and quantum yield are important in many industrial fields including paper, textile and also in medical industry. The uncertainty of the measurements is naturally dependent on the uncertainty of the reference standards and therefore it is important to have high-accuracy calibration instruments capable of absolute measurements. Lambertian behaviour of fluorescent emission in solid amorphous materials is a commonly made assumption. Deviation from this behaviour has been shown [1][2] by using goniometric measurements of fluorescence [3][4].This finding is significant since most commercial and research instruments are limited to fixed geometry measurements and usually rely on the assumption of Lambertian emission of fluorescence. This may result in errors in inter geometry measurements of fluorescence and also absolute quantum yield estimations. To address these challenges, either more Lambertian standard materials or reliable methods to correct for these effects are needed. Figure 1. The relative luminescent radiance factors ?L and reflected radiance factors ?R at peak emission wavelength for each sample and reflected wavelength (380 nm) respectively. In this work bispectral luminescent radiance factors and reflected radiance factors of a number of commercially available fluorescence standards and a novel standard material candidate have been measured in a wavelength range from 380 nm to 700 nm with an uncertainty (k=2) of 1%. The angular distribution of the emitted radiation from the standard materials is in addition to being non-Lambertian also shown to be different from the angular distribution of reflected radiation as seen on Figure 1. The novel sample is shown to exhibit more Lambertian emission and reflection behaviour than the commercially available standard materials. In addition the effects of the angular profiles of measured radiation on the absolute quantum yield estimation of the materials are shown.

KW - fluorescence

KW - goniometrical

KW - uncertainty

KW - measurement

M3 - Conference Abstract

ER -

Jaanson P, Manoocheri F, Ikonen E. Characterisation of fluorescence standard materials. 2015. Abstract from PTB International Summer School on Metrology, Drübeck, Germany.