Modulation of essentially thermionic forward current by light-induced lowering of an electrostatic barrier leads to steady-state electron per photon gain of order 106 in narrow Cu-compensated Au/CdS junctions. The light dependence of the barrier, whose peak lies within the semiconductor, is measured directly by internal photoemission. A model of the junction is presented and the limiting threshold and gain of this type of device is estimated.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)