Two-electron centers with negative correlation energy in Pb{sub 1-x}Sn{sub x}Se solid solutions
- St. Petersburg State Polytechnic University (Russian Federation)
In Pb{sub 1-x-y}Sn{sub x}Na{sub y}Se solid solutions, the chemical potential F lies lower than the valence-band top E{sub v}, and the dependences F(T) are linear, with the extrapolation to T = 0 K yielding a value E{sub V} - F{sub 0} = (210 {+-} 10) meV for solid solutions containing 0.3 at % of sodium and (250 {+-} 10) meV for those with 0.5 at % of sodium (F{sub 0} is the position of the chemical potential at T = 0 K). The dependences of F{sub 0} on the content of sodium are also linear, with the extrapolation to zero content yielding a value F{sub 0} = 162 {+-} 10 meV for solid solutions containing 2 at % of tin. The correlation energy U of two-electron tin centers in PbSe is independent of the content of tin and sodium and equal to U = (-65 {+-} 10) meV.
- OSTI ID:
- 21088640
- Journal Information:
- Semiconductors, Vol. 40, Issue 11; Other Information: DOI: 10.1134/S1063782606110091; Copyright (c) 2006 Nauka/Interperiodica; Article Copyright (c) 2006 Pleiades Publishing, Inc; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7826
- Country of Publication:
- United States
- Language:
- English
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