ENERGY DIAGRAM OF A PB1-XMNXTE PBTE HETEROJUNCTION/

The spectra and the kinetics of the pbotoconductivity of a n-Pb1-xMnxT e/p-PbTe/BaF2 (x almost-equal-to 0.02) heterostructure were determined during he passage of a current through the heterojunction. The photor esponse signal had two slowly decaying components, one of which exhibi ted a temperature dependence of the relaxation time of the thermal-act ivation type. The red edge of the photoconductivity spectrum was shift ed toward longer wavelengths compared with the corresponding photolumi nescence line. The experimental results were used to construct the ene rgy diagram of the heterojunction with a conduction-band offset approx imately 68 meV.