Fizika Nizkikh Temperatur: Volume 45, Number 2 (February 2019), p. 165-170 ( to contents , go back )
Fourier-transform spectroscopy of the persistent photoconductivity in PbSnTe(In) films at low temperatures
A.V. Ikonnikov1, V.I. Chernichkin1, D.A. Akopian1, V.S. Dudin1, D.E. Dolzhenko1, A.V. Nikorici2, L.I. Ryabova1, and D.R. Khokhlov1,3
1Lomonosov Moscow State University, 1 Leninskie Gory, Moscow 119991, Russia
2Institute for Applied Physics, Academy of Science of Moldova, Chisinau MD-2028, Republic of Moldova
3P.N. Lebedev Physical Institute, Moscow 119991, Russia
Received Septembe 24, 2018, published online December 20, 2018
In this work, photoconductivity spectra were studied by the Fourier-transform spectroscopy in the solid solution of Pb1−xSnxTe(In) at low temperatures. It is shown that quenching of the persistent photoconductivity in Pb1–xSnxTe(In) by radio pulses of very high frequency (100–200 MHz) can be used to ob-tain spectra using a Fourier-transform spectrometer. In the spectra, the interband absorption band was observed, and the temperature dependence of its red cut-off boundary was determined.
Key words: PbSnTe, Fourier transform infrared spectroscopy, photoconductivty, quenching of photoconductivity.