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How Does Light Scattering Affect Luminescence? Fluorescence Spectra and Quantum Yields in the Solid Phase

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M. Gabriela Lagorio and Enrique San Román

INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Universidad de Buenos Aires, Buenos Aires, Argentina

J. Chem. Educ., 2002, 79 (11), p 1362

DOI: 10.1021/ed079p1362

Publication Date (Web): November 1, 2002

Section:

History, Education, and Documentation

Abstract

Fluorescence quantum yields and luminescence spectra for solid samples are presented and interpreted. Re-absorption of the emitted light is very important in these systems causing a decrease in the observed luminescence quantum yield as well as distortions in emission spectra (usually a shift to longer wavelengths). These processes affect far more the emission from thick layers than from thin layers of scattering materials. Quantitative corrections due to light re-absorption and re-emission processes are introduced. This manuscript summarizes the practical cautions to be taken into account to avoid misunderstanding or false results when dealing with luminescence data in the presence of light scattering.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Physical Chemistry

Keywords (Subject):

Fluorescence Spectroscopy

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Received: August 03, 2009

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How Does Light Scattering Affect Luminescence? Fluorescence Spectra and Quantum Yields in the Solid Phase

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A Brief History of Fluorescence and Phosphorescence before the Emergence of Quantum Theory

The Atomic Mass Unit, the Avogadro Constant, and the Mole: A Way To Understanding

First-Year University Chemistry Textbooks’ Misrepresentation of Gibbs Energy

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