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SM ISO690:2012 NEMERENCO, Lucretia. Exciton spectra of CuInSe2 crystals. In: Moldavian Journal of the Physical Sciences, 2005, nr. 4(4), pp. 438-442. ISSN 1810-648X. |
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Moldavian Journal of the Physical Sciences | ||||||
Numărul 4(4) / 2005 / ISSN 1810-648X /ISSNe 2537-6365 | ||||||
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Pag. 438-442 | ||||||
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The excitonic reflectivity spectra and the wave-length derivative reflection spectra have
been investigated for CuInSe2 crystals. The n =1, n =2 and n = 3 states of A, B and C exciton
series are revealed and the contours of exciton lines (n=1) are calculated. The exciton binding
energies and exact values of the band gaps of all three intervals Γ7 (V1) – Γ6 (C1), Γ6 (V2) – Γ6
(C1), Γ7 (V3) – Γ6 (C1) have been also calculated. Data of the splitting due to crystal-field and
spin-orbit interaction are determined. The parameters of excitons and energy bands for the
region of interband interval minimum have been determined as well. The band model in the Γ,
N and T points of the Brillouin zone is proposed.
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