Abstract
The transmittance of β-ZnP2 crystals is measured as a function of the incident light polarization, photon energy, and sample thickness over the transmission window of the crystals. The results attest to anomalous light propagation through β-ZnP2, which is attributable to refractive-index nonuniformity. The intrinsic edge in β-ZnP2 for the E ∥ c polarization is shown to be dominated by indirect and direct allowed transitions for α below and above 1 cm−1, respectively. The 300-K indirect band gap of β-ZnP2 is evaluated.
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Original Russian Text © V.A. Morozova, S.F. Marenkin, O.G. Koshelev, V.M. Trukhan, 2006, published in Neorganicheskie Materialy, 2006, Vol. 42, No. 3, pp. 263–267.
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Morozova, V.A., Marenkin, S.F., Koshelev, O.G. et al. Optical absorption in monoclinic zinc diphosphide. Inorg Mater 42, 221–225 (2006). https://doi.org/10.1134/S0020168506030010
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DOI: https://doi.org/10.1134/S0020168506030010