Biexciton fluorescence line shape in CdS
A careful experimental study of the M line in CdS is presented, with special attention to polarisation properties. The data can be fitted by a theoretical model of the line shape in both polarization (E⊥C and E//C) taking into account the results of group theory, with the recombination of the molecule considered as giving two polaritons. A more precise value of the energy EB(o) of the ground state of the excitonic molecule is obtained EB(o)/2 = 2.5497 eV ± 0.2 meV.
KeywordsLine Shape Excitation Level Experimental Line Shape Excitonic Molecule Theoretical Line Shape
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