Ab initio calculations of conduction band effective mass parameters of thermoelectric [Formula : see text] (X, Y = Si, Ge, Sn) alloys
Since there are still research interests in the physical properties of quasi-binary thermoelectric [Formula: see text] alloys, with X, Y = Si, Ge, Sn, we present an ab initio analysis that yields the relative formation energy and effective masses of the conduction bands, in the whole compositional range x. We base our calculations on the full-relativistic Korringa, Kohn and Rostocker (KKR) Green's functions formalism within the coherent potential approximation (CPA). Formation energies, measured relative to the end [Formula: see text] compounds, show no excess energy for the [Formula: see text] substitution thus indicating a complete solubility. In contrast, concave and asymmetric formation energies for intermediate compositions in the [Formula: see text] alloys manifest a miscibility gap. With this basis, we compute and discuss the crossing of the conduction bands observed in n-type [Formula: see text] materials. We present direction- and band-dependent effective masses using a generalized single parabolic band effective mass approximation to discuss anisotropic effects, to interpret available experimental and theoretical data, and to predict intermediate and not yet published transport parameters on these alloys.
| Medienart: |
E-Artikel |
|---|
| Erscheinungsjahr: |
2020 |
|---|---|
| Erschienen: |
2020 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:10 |
|---|---|
| Enthalten in: |
Scientific reports - 10(2020), 1 vom: 01. Okt., Seite 16333 |
| Sprache: |
Englisch |
|---|
| Beteiligte Personen: |
Guerra, Juan M [VerfasserIn] |
|---|
| Links: |
|---|
| Themen: |
|---|
| Anmerkungen: |
Date Revised 29.12.2023 published: Electronic Citation Status PubMed-not-MEDLINE |
|---|
| doi: |
10.1038/s41598-020-73277-9 |
|---|
| funding: |
|
|---|---|
| Förderinstitution / Projekttitel: |
|
| PPN (Katalog-ID): |
NLM315752882 |
|---|
| LEADER | 01000caa a22002652 4500 | ||
|---|---|---|---|
| 001 | NLM315752882 | ||
| 003 | DE-627 | ||
| 005 | 20240108135831.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 231225s2020 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1038/s41598-020-73277-9 |2 doi | |
| 028 | 5 | 2 | |a pubmed24n1242.xml |
| 035 | |a (DE-627)NLM315752882 | ||
| 035 | |a (NLM)33004898 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rakwb | ||
| 041 | |a eng | ||
| 100 | 1 | |a Guerra, Juan M |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Ab initio calculations of conduction band effective mass parameters of thermoelectric [Formula |b see text] (X, Y = Si, Ge, Sn) alloys |
| 264 | 1 | |c 2020 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ƒaComputermedien |b c |2 rdamedia | ||
| 338 | |a ƒa Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Date Revised 29.12.2023 | ||
| 500 | |a published: Electronic | ||
| 500 | |a Citation Status PubMed-not-MEDLINE | ||
| 520 | |a Since there are still research interests in the physical properties of quasi-binary thermoelectric [Formula: see text] alloys, with X, Y = Si, Ge, Sn, we present an ab initio analysis that yields the relative formation energy and effective masses of the conduction bands, in the whole compositional range x. We base our calculations on the full-relativistic Korringa, Kohn and Rostocker (KKR) Green's functions formalism within the coherent potential approximation (CPA). Formation energies, measured relative to the end [Formula: see text] compounds, show no excess energy for the [Formula: see text] substitution thus indicating a complete solubility. In contrast, concave and asymmetric formation energies for intermediate compositions in the [Formula: see text] alloys manifest a miscibility gap. With this basis, we compute and discuss the crossing of the conduction bands observed in n-type [Formula: see text] materials. We present direction- and band-dependent effective masses using a generalized single parabolic band effective mass approximation to discuss anisotropic effects, to interpret available experimental and theoretical data, and to predict intermediate and not yet published transport parameters on these alloys | ||
| 650 | 4 | |a Journal Article | |
| 700 | 1 | |a Mahr, Carsten |e verfasserin |4 aut | |
| 700 | 1 | |a Giar, Marcel |e verfasserin |4 aut | |
| 700 | 1 | |a Czerner, Michael |e verfasserin |4 aut | |
| 700 | 1 | |a Heiliger, Christian |e verfasserin |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |t Scientific reports |d 2011 |g 10(2020), 1 vom: 01. Okt., Seite 16333 |w (DE-627)NLM215703936 |x 2045-2322 |7 nnns |
| 773 | 1 | 8 | |g volume:10 |g year:2020 |g number:1 |g day:01 |g month:10 |g pages:16333 |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1038/s41598-020-73277-9 |3 Volltext |
| 912 | |a GBV_USEFLAG_A | ||
| 912 | |a GBV_NLM | ||
| 951 | |a AR | ||
| 952 | |d 10 |j 2020 |e 1 |b 01 |c 10 |h 16333 | ||