Transport phenomena in vapor-phase PbTe-Bi<sub>2</sub>Te<sub>3</sub> condensate on mica substrates

Authors

  • D. M. Freyik Vasyl Stefanyk Precarpathian National University
  • B. S. Dzundza Vasyl Stefanyk Precarpathian National University
  • Ya. S. Yavorskyy Vasyl Stefanyk Precarpathian National University
  • T. S. Lyuba Ivan Ogienko Kamenetz-Podolsk National University
  • O. N. Matkivskiy Vasyl Stefanyk Precarpathian National University

Keywords:

vapor-phase PbTe-Bi2Te3 condensate, mica substrate, thermoelectric parameters of surface layers

Abstract

Dependences of the structural characteristics and electrical properties of thin films of solid solutions PbTe-Bi2Te3containing 1, 3, 5 mоl. % Bi2Te3, deposited in open vacuum for fresh chips (0001) of mica muscovite, on their thickness d=(0.1–1) microns were studied. The effective mean free path of charge carriers was detected and the dominant scattering mechanism was determined. Within the two-layer Petritz model an estimation the thermoelectric parameters extent of surface layers was carried out. It has been found that the condensate has stable n-type conductivity and there is diffuse scattering on the surface, which leads to a significant decrease in relation to the films volume for mobility, conductivity, and increasing Seebeck efficient.

References

1. Шперун В.М., Фреїк Д.М., Запухляк Р.І. Термоелектрика телуриду свинцю та його аналогів. – Івано-Франківськ: Плай, 2000. – 250 с.

2. Фреик Д.М., Галущак М.А., Межиловская Л.Й. Физика и технология тонких пленок. – Львов: Вища школа, 1988. – 18 с.

3. Фреїк Д.М., Дзундза Б.С., Яворський Я.С., Межиловська Л.Й. Вплив поверхні та міжзеренних меж на розсіювання носіїв струму у парофазних конденсатах твердих розчинів PbTe-Sb2(Bi2)Te3 // Фізика і хімія твердого тіла. – 2013. – Т. 14, № 1. – С. 82–89.

4. Zemel J.N. Recent developments epitaxial    IV-VI films // J. Luminescence. – 1973. – V. 7. – Р. 524–541.

5. Грин М. Поверхностные свойства твердых тел. – Москва: Мир, 1972. – 432 с.

6. Vaya P.R., Majht J., Gopalam B.S.V., Dattatrepan C. Thickness dependence of hall mobility of HWE grown PbTe films // Phys. Stat. Sol. А. – 1985. – V. 87. – Р. 341–350.

7. Зимин С.П., Горлачев Е.С. Нанострукту-рированые халькогениды свинца: монографія. – Ярославль: ЯрГУ, 2011. – 230 c.

8. Волков С.В., Ковальчук Є.П., Огенко В.М., Решетняк О.В. Нанохімія, наносистеми, наноматеріали. – Київ: Наукова думка, 2008. – 424 с.

9. Tellier C.R., Tosser A.J., Boutrit C. The Mayadas-Shatzkes conduction model treated as a Fuchs-Sondheimer model // Thin Solid Films. – 1977. – V. 44. – Р. 201–208.

10. Petritz R.L. Theory of an experiment for measuring the mobility and density of carriers in the space-charge region of а semiconductor surface // Phys. Rev. – 1958. – V. 110. – Р. 1254–1260.

Downloads

How to Cite

(1)
Freyik, D. M.; Dzundza, B. S.; Yavorskyy, Y. S.; Lyuba, T. S.; Matkivskiy, O. N. Transport Phenomena in Vapor-Phase PbTe-Bi<sub>2< sub>Te<sub>3< sub> Condensate on Mica Substrates. Him. Fiz. Tehnol. Poverhni 2014, 5, 82-88.

Issue

Vol. 5 No. 1 (2014): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

Section

Articles

License

  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.