| Abstract
| - The transmittance, reflectance, and photoluminescence optical spectra of lamellar cadmium phosphorus trisulfide (CdPS3) crystals are reported, as measured before and after intercalation with quaterthiophene (4T) molecules. The optical properties of pristine CdPS3 and 4T intercalates have been characterized in the 2−6 eV spectral region by the full complex refractive index. This latter has been deduced from transmittance and reflectance measurements and by Kramers−Kronig relations. The comparison of optical properties of CdPS3 and its 4T intercalate provide information on the arrangement of the molecules inside the inorganic layers and on the interactions between the organic molecules and between the organic and inorganic components.
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