Abstract:Excitonic reflection spectra of CuAlSe2
crystals were studied at 10 K. The spectral dependences of refractive indices
no and
ne
were calculated. The isotropic wavelength (the point of intersection of
no and
ne) in the excitonic region was determined. The spectral dependence of
Δn = no − ne
was studied on the long-wavelength and short-wavelength sides of the isotropic wavelength of
CuGaxAl1 − xSe2
crystals. Up to 15 narrow transmission (absorption) lines were revealed in the interference
spectra of thin cry… Show more
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