Electrical transport properties of hydrogen-exposed p-type PbTe films

Abstract Hall coefficient and d.c. conductivity measurements were made on p -type PbTe epitaxial films exposed to molecular hydrogen gas at high pressures (100–500 psi) in the temperature range (100–300K). It is found that hydrogen converts p -type films to n -type at a pressure of about 300 psi. The results are explained by assuming that the action of hydrogen is to provide donor electrons.