Study of Mg2Si Thin Film and Ultra-Thin Film Formation for Thermoelectric Applications

Zouak, Belkacem; Zirmi, Rachid; Belkaid, Mohammed Saïd; Pasquinelli, M.

doi:10.1007/s11664-019-07003-1

Cited by 7 publications

(1 citation statement)

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“…Semiconductor silicides of alkaline Earth metals (Ca, Mg, Ba), including their ternary compounds, attract considerable attention as materials for thermoelectric converters, photodiodes and LED. [1][2][3][4] Among these elements, calcium (Ca) is one of the most common elements in the Earth and occupies the 5th place in their total distribution. 5) Calcium silicides form six compounds Ca 2 Si, CaSi, Ca 5 Si 3 , Ca 3 Si 4 , Ca 14 Si 19 , and CaSi 2 with different crystal structures and compositions and have a wide range of properties from semiconductor to semimetallic, including both bulk and layered structures, with promising properties for semiconductor conductivity, thermoelectricity and biological applications.…”

Section: Introductionmentioning

confidence: 99%

Ca silicide films—promising materials for silicon optoelectronics

Галкин

Galkin

Goroshko

et al. 2022

Jpn. J. Appl. Phys.

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Single-phase films of semiconductor and semimetallic calcium silicides (Ca2Si, CaSi, and CaSi2), as well as films with a significant contribution of Ca5Si3 and Ca14Si19 silicides, were grown on single-crystal silicon and sapphire substrates. The analysis of the crystal structure of the grown films was carried out and the criterion of their matching with silicon and sapphire substrates was determined. Some lattice matching models were proposed, and the subsequent deformations of the silicide lattices were estimated. Film’s optical functions, including the optical transparency, were calculated from the optical spectroscopy data and an extended comparison was performed with the results of ab initio calculations. The real limits of the optical transparency for the films on sapphire substrates were established. The maximum transparency limit (3.9 eV) was observed for the CaSi film. Based on an analysis of the photoelectric properties of Ca2Si/Si diodes on n- and p-type silicon substrates, a perspective of their applications in silicon optoelectronics was discussed.

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Section: Introductionmentioning

confidence: 99%