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Self-absorption correction for solid-state photoluminescence quantum yields obtained from integrating sphere measurements
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10.1063/1.2768926
/content/aip/journal/rsi/78/8/10.1063/1.2768926
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/8/10.1063/1.2768926
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Normalized absorption (black) and true luminescence (red) spectra of perylene red in PMMA films, along with the observed spectra obtained using the integrating sphere for films with maximum OD of 0.1 (blue), 0.3 (green), and 2 (purple). (b) Normalized true fluorescence spectrum of PR in PMMA films (black), the normalized observed luminescence spectrum of a film with maximum OD of 2.0 using the integrating sphere (red), and the scaled spectrum (blue) where the scale factor is adjusted so matches at and longer.

Image of FIG. 2.
FIG. 2.

(Color online) Observed quantum yields (circles), the recalculated quantum yields taking self-absorption into account (triangles), the QY from photoluminescence lifetime measurements (blue line), and the expected predicted by Eqs. (7) and (8) with (green line). The higher errors at low OD samples are due to lower signals and the uncertainty in laser absorption in Eq. (10).

Image of FIG. 3.
FIG. 3.

Dependence of the self-absorption probability on film absorbance for perylene red in PMMA films. can be calculated using Eq. (7) and the luminescence spectra from the integrating sphere (filled circles), or by using Eqs. (2) and (3) with , the path length of travel for photon escape, set to the film thickness multiplied by a factor of 20 (open squares).

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/content/aip/journal/rsi/78/8/10.1063/1.2768926
2007-08-14
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Self-absorption correction for solid-state photoluminescence quantum yields obtained from integrating sphere measurements
http://aip.metastore.ingenta.com/content/aip/journal/rsi/78/8/10.1063/1.2768926
10.1063/1.2768926
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