Abstract
The photoluminescence (PL) spectra of pure and Li intercalated InSe using the n-butyl-lithium method are presented in the temperature range from 5 to 150 K and the effect of Li intercalation on the structure of the emission spectrum is examined. The new characteristics demonstrate the presence of new PL centers that modify the long-wavelength region of the spectrum. The observed modifications, which are analysed in detail, taking into account the dependence of the spectra on temperature, optical excitation intensity and dose of intercalation, enable us to give an interpretation of their origin.
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