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Exponentially Modified Gaussian Function. An Empirical Equation for Description of the Band Emission of Inorganic Phosphors
Author(s) -
Nötzold D.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199709)203:1<247::aid-pssb247>3.0.co;2-n
Subject(s) - phosphor , physics , gaussian , analytical chemistry (journal) , chemistry , quantum mechanics , optoelectronics , chromatography
The empirically found, exponentially modified Gaussian function is used for the description of the band emission of inorganic phosphors. The function includes the two parameters, the intensity of the maximum ( I 0 ) and its spectral position ( ν‐ 0 ), and besides two parameters for the slope of the flanks of the emission band ( k 1 , k 2 ) and two parameters for their deviation from the true Gaussian distribution ( n 1 , n 2 ). The equation is applied to the emission spectra of centre phosphors and crystal phosphors doped by different activator ions and moreover of non‐activated phosphors. Correlation coefficients are in the order of magnitude of 0.9999. The function also succeeded in splitting up emission bands into two bands.