Two-Electron DX State in CdTe:In
C. Skierbiszewski, P. Wiśniewski, E. Litwin-Staszewska, T. Suski
High Pressure Research Center, Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw, Poland

Z. Wilamowski, A.K. Zakrzewski, G. Karczewski
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warsaw, Poland

and W. Jantsch
Institut fur Experimentalphysik, Johannes-Kepler-Universität, 4040 Linz, Austria
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In this paper we investigate electron emission/capture from/to the DX state of indium in CdTe by means of high pressure freeze-out cycle and steady-state photo-conductivity experiments. The results indicate that the DX state is occupied by two electrons. A comparison with deep level transient spectroscopy data shows that two-electron emission occurs at low temperatures, while one-electron emission takes place at high temperatures.
DOI: 10.12693/APhysPolA.90.927
PACS numbers: 71.55.Gs, 73.61.Ga