Absolute determination of photoluminescence quantum efficiency using an integrating sphere setup
- Department of Chemistry, KU Leuven, Leuven 3001 (Belgium)
- LumiLab, Department of Solid State Sciences, Ghent University, Ghent 9000 (Belgium)
- ESAT/Light and Lighting Laboratory, KU Leuven, Technology Campus Ghent, Ghent 9000 (Belgium)
- ESAT/ELECTA, KU Leuven, Leuven 3001 (Belgium)
An integrating sphere-based setup to obtain a quick and reliable determination of the internal quantum efficiency of strongly scattering luminescent materials is presented. In literature, two distinct but similar measurement procedures are frequently mentioned: a “two measurement” and a “three measurement” approach. Both methods are evaluated by applying the rigorous integrating sphere theory. It was found that both measurement procedures are valid. Additionally, the two methods are compared with respect to the uncertainty budget of the obtained values of the quantum efficiency. An inter-laboratory validation using the two distinct procedures was performed. The conclusions from the theoretical study were confirmed by the experimental data.
- OSTI ID:
- 22392265
- Journal Information:
- Review of Scientific Instruments, Vol. 85, Issue 12; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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