United States, where he completed his famous model of the absorption edge and of the gap states in amorphous semiconductors. Since 1970, Jan Tauc served for 22 years as a Professor of the Brown University in Providence, R.I.
There, he contributed fundamentally to physics of metallic glasses, to the carrier kinetics in amorphous semiconductors by means of the novel photomodulation spectroscopy, and to the newly discovered area of picosecond ultrasonics.