Electrical surface properties of polycrystalline layers of PbTe and InSb
- 1 June 1969
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 2 (6) , 839-853
- https://doi.org/10.1088/0022-3727/2/6/309
Abstract
Measurement of the high-frequency differential capacitance associated with the surface space-charge region on evaporated polycrystalline layers of both PbTe and InSb has shown that, although qualitatively similar, the surface-state distribution on PbTe is approximately an order of magnitude larger than that on InSb. The quiescent surface charge is ~ 740 nc cm−2 on PbTe and ~96 nc cm−2 on InSb. Hall-voltage and resistivity measurements have been carried out on both materials and the apparent intrinsic behaviour of both p- and n-type PbTe films is shown to be the result of impurity compensation by surface states.Keywords
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