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Measurement of absolute photoluminescence quantum yields using integrating spheres – Which way to go?
Author(s) -
Faulkner D.O.,
McDowell J.J.,
Price A.J.,
Perovic D.D.,
Kherani N.P.,
Ozin G.A.
Publication year - 2012
Publication title -
laser and photonics reviews
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.778
H-Index - 116
eISSN - 1863-8899
pISSN - 1863-8880
DOI - 10.1002/lpor.201200077
Subject(s) - photoluminescence , spheres , quantum yield , absolute (philosophy) , yield (engineering) , quantum , range (aeronautics) , materials science , luminescence , polymer , sample (material) , nanotechnology , optoelectronics , biological system , optics , physics , quantum mechanics , thermodynamics , philosophy , epistemology , composite material , astronomy , fluorescence , biology
Two common methods for recording absolute photoluminescence quantum yields using integrating spheres are discussed. These methods are developed from a theoretical standpoint, with a discussion of the assumptions made in each and their principle differences, and practical comparisons between the two are made using a range of different materials and sample types. It is shown that despite the underlying theoretical differences both methods ultimately yield very similar experimental results. Additionally, the concept of a time‐dependent quantum yield is examined and preliminary studies along these lines are presented in the form of an investigation into the photo‐oxidation of a luminescent polymer film.