التفاصيل البيبلوغرافية
| العنوان: |
Thermoelectric Properties of the As/P-Based Zintl Compounds EuIn2As2−xPx (X = 0 to 2) and SrSn2As2 |
| المؤلفون: |
Keisuke Shinozaki (10648090), Yosuke Goto (9988382), Kazuhisa Hoshi (10648092), Ryosuke Kiyama (10648094), Naoto Nakamura (10648095), akira miura (8086883), Chikako Moriyoshi (9988405), Yoshihiro Kuroiwa (9988408), Hidetomo Usui (9988411), Yoshikazu Mizuguchi (9988441) |
| سنة النشر: |
2021 |
| المجموعة: |
Smithsonian Institution: Digital Repository |
| مصطلحات موضوعية: |
Piezoelectricity and Thermoelectricity, thermoelectric material, arsenide, phosphide, Crystal structure, transport properties, Electronic Structure |
| الوصف: |
Zintl compounds containing Sb have been studied extensively because of their promising thermoelectric properties. In this study, we prepared As/P-based Zintl compounds, EuIn2As2-xPx (x = 0 to 2) and SrSn2As2, and examined their potential for use as thermoelectric materials. These compounds show hole carrier concentrations of ~10^19 /cm3 for EuIn2As2-xPx and ~10^21 /cm3 for SrSn2As2 at 300 K. The high carrier concentration of SrSn2As2 is likely owing to self-doping by hole-donating Sn vacancies. The electrical power factor reaches ~1 mW/mK2 at ~600 K for EuIn2As2-xPx with x = 0.1 and 0.2. The lattice thermal conductivity is determined to be 1.6–2.0 W/mK for EuIn2As2 and SrSn2As2, and 2.8 W/mK for EuIn2P2 at 673 K. The dimensionless figure of merit reaches ZT = 0.29 at 773 K for EuIn2As2-xPx with x = 0.2. First-principles calculations show that EuIn2As2 and SrSn2As2 are topologically nontrivial materials with band inversion, while EuIn2P2 is a conventional semiconductor with a bandgap. The present study demonstrates that As/P-based Zintl compounds can also show promising thermoelectric properties, thus expanding the frontier for efficient thermoelectric materials. |
| نوع الوثيقة: |
report |
| اللغة: |
unknown |
| Relation: |
https://figshare.com/articles/preprint/Thermoelectric_Properties_of_the_As_P-Based_Zintl_Compounds_EuIn2As2_xPx_X_0_to_2_and_SrSn2As2/14417759 |
| DOI: |
10.26434/chemrxiv.14417759.v1 |
| الاتاحة: |
https://doi.org/10.26434/chemrxiv.14417759.v1 |
| Rights: |
CC BY-NC-ND 4.0 |
| رقم الانضمام: |
edsbas.629DAF2E |
| قاعدة البيانات: |
BASE |