Abstract
In Schottky diodes fabricated by evaporating thallium on a layer of crystallized selenium, incremental capacitance and resistance, measured at zero bias, were found to decrease considerably with frequency over the range 100 Hz to 3 MHz. This variation is interpreted in terms of series resistance of the contacts and a layer in the selenium, some 0.4 μm in thickness, near the junction which is depopulated of acceptors.