Ion-semiconductor film systems

According to Velikanov [1], the exponential growth of conductivity with temperature is the main feature of a semiconductive PFC. Taking the film system as a whole, we can recognize two other distinctions. 

Firstly, the polarization characteristics should depend not only on the properties of the system, but also on the electrode material. This follows from the non-linearity of the metal-semiconductor junction, which is dependent on the work functimi of electrons, and thus, on the nature of the electrode material [16]. 

It seems likely that such ion-semiconductor systems are rare in ionic melts due to the degeneracy of the semiconductor at high temperamres. However, some data evidence their formation at some peculiar conditions in course of Si metal deposition out of a KF-KCI-K2S1F6 melt. It was shown [17] that the initial parts of polarization curves contained the non-diffusion waves similar to that observed for germanium systems (see Chap. 3) on a platinum electrode. The same surface waves were detected on Ag and Au electrodes as well, thus suggesting the reduction 

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