CHARACTERISTIC FEATURES OF THE INTERACTION OF POROUS SILICON WITH HEAVY-WATER

The interaction of porous silicon (por-Si) with heavy water (D2O) was investigated by means of time-resolved photoluminescence and infrared Fourier spectroscopy. It is shown that contact of per-Si with D2O lead s to anomalously rapid oxidation of its surface - at a rate at least a n order of magnitude higher than the oxidation rate of per-Si in ordin ary (protium) water. The oxidation process transforms the chemical com position of the per-Si surface and is accompanied by abrupt changes in the spectral and temporal characteristics of the photoluminescence. A ssumptions are made concerning the nature of the interaction of porous silicon with heavy water. (C) 1998 American Institute of Physics.