Spectroscopic ellipsometry studies of HgI2 surface roughness effects and optical properties of [KHgI3, H2O]
2002
Abstract Below the energy-band absorption edge (∼2.2 eV), the ordinary and extraordinary refractive indices of the film formed on a HgI 2 substrate after 30 h exposure to air were found to follow the first-order Cauchy dispersion relationship n of =1.401+0.052/λ 2 and n ef =1.575+0.043/λ 2 in the spectral range from 300 to 800 nm. The characteristics of the complex [KHgI 3 , H 2 O] formed on the HgI 2 surface after potassium iodide (KI) etching have been investigated by taking into account the surface roughness.
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