Optical properties of a polymer host matrix containing mercuric iodide microcrystals

Microcrystals of mercuric iodide have been grown in a polymer matrix with p ores 200 nm in diameter. The absorption and luminescence spectra indicate t he formation of microcrystals of two (red and orange) modifications in the host matrix. The temperature dependence of the emission spectra and the evo lution of absorption and emission spectra in the course of sample ageing ha ve been studied. The evolution of the spectra is governed by the transition from the orange to red modification and the increase in size of microcryst als. (C) 2000 MAIK "Nauka/Interperiodica".