journal article·2021-09-29

Stabilizing the Optimal Carrier Concentration in Al/Sb-Codoped GeTe for High Thermoelectric Performance

Xinyu Wang, Wenhua Xue, Zongwei Zhang, Xiaofang Li, Li Yin, Chen Chen, Bo Yu, Jiehe Sui, Feng Cao, Xingjun Liu, Jun Mao, Yumei Wang, Xi Lin, Qian Zhang

ACS Applied Materials & Interfaces· Volume 13· Issue 38
Publisher page

Abstract

GeTe is a promising thermoelectric material and has attracted growing research interest recently. In this study, the effect of Al doping and Al&Sb codoping on the thermoelectric properties of GeTe was investigated. Due to the presence of a high concentration of intrinsic Ge vacancies, pristine GeTe exhibited a very high hole concentration and unpromising thermoelectric performance. By Sb doping in GeTe, the hole concentration can be effectively reduced, thus improving the thermoelectric performance. Aluminum, as a p-type dopant in GeTe, will increase the hole concentration and lattice thermal conductivity; thus, it has long been considered as an unfavorable dopant for the optimization of GeTe-based materials. However, when Al and Sb were codoped into GeTe, the hole concentration was effectively suppressed, and the lattice thermal conductivity can be reduced. Eventually, a maximum zT of ∼2.0 at 773 K was achieved in Al&Sb-codoped Al0.01Sb0.1Ge0.89Te.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Chalcogenide Semiconductor Thin Films · Phase-change materials and chalcogenides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, and Institute of Materials Genome & Big Data, Harbin Institute of Technology, Shenzhen 518055, P. R. China

Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Science, Beijing 100190, P. R. China

Ningbo Fengcheng Advanced Energy Materials Research Institute, Fenghua District, Ningbo, Zhejiang 315500, China

State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, P. R. China

School of Science, Harbin Institute of Technology, Shenzhen 518055, P. R. China

Blockchain Development and Research Institute, Harbin Institute of Technology, Shenzhen 518055, P. R. China

Funding

Ministry of Science and Technology of the People's Republic of China · Shenzhen Fundamental Research Program · Science, Technology and Innovation Commission of Shenzhen Municipality · National Natural Science Foundation of China · Natural Science Foundation of Guangdong Province · Fund of Science and Technology on Reactor Fuel and Materials Laboratory

References (42)

Show source-provided references
1. 10.1126/science.115889910.1126/science.1158899 ↗
2. 10.1126/science.285.5428.70310.1126/science.285.5428.703 ↗
3. 10.1002/adem.20150033310.1002/adem.201500333 ↗
4. 10.1126/science.aak999710.1126/science.aak9997 ↗
5. 10.1002/adma.20160588410.1002/adma.201605884 ↗
6. 10.1038/s41563-020-00852-w10.1038/s41563-020-00852-w ↗
7. 10.1016/j.actamat.2020.07.05810.1016/j.actamat.2020.07.058 ↗
8. 10.1126/science.aaz942610.1126/science.aaz9426 ↗
9. 10.1038/nmat209010.1038/nmat2090 ↗
10. 10.1038/nature0999610.1038/nature09996 ↗
11. 10.1021/ja301245b10.1021/ja301245b ↗
12. 10.1002/advs.20190262810.1002/advs.201902628 ↗
13. 10.1002/adfm.20191005910.1002/adfm.201910059 ↗
14. 10.1021/jacs.8b1262410.1021/jacs.8b12624 ↗
15. 10.1039/c9ta10436d10.1039/c9ta10436d ↗
16. 10.1002/aenm.20200122910.1002/aenm.202001229 ↗
17. 10.1126/science.115972510.1126/science.1159725 ↗
18. 10.1039/c1ee02465e10.1039/c1ee02465e ↗
19. 10.1038/am.2016.20310.1038/am.2016.203 ↗
20. 10.1073/pnas.130573511010.1073/pnas.1305735110 ↗
21. 10.1073/pnas.181915711610.1073/pnas.1819157116 ↗
22. 10.1038/nature1143910.1038/nature11439 ↗
23. 10.1016/j.chempr.2020.01.00210.1016/j.chempr.2020.01.002 ↗
24. 10.1016/j.nanoen.2020.10477110.1016/j.nanoen.2020.104771 ↗
25. 10.1021/acsami.0c0215510.1021/acsami.0c02155 ↗
26. 10.1016/j.joule.2020.03.00410.1016/j.joule.2020.03.004 ↗
27. 10.1039/c9ee00317g10.1039/c9ee00317g ↗
28. 10.1002/pssb.20124841210.1002/pssb.201248412 ↗
29. 10.1088/0022-3719/20/10/01210.1088/0022-3719/20/10/012 ↗
30. 10.1002/pssb.1970038011010.1002/pssb.19700380110 ↗
31. 10.1002/smll.20190692110.1002/smll.201906921 ↗
32. 10.1021/acsaem.9b0158510.1021/acsaem.9b01585 ↗
33. 10.1038/am.2017.810.1038/am.2017.8 ↗
34. 10.1021/acs.chemmater.5b0343410.1021/acs.chemmater.5b03434 ↗
35. 10.1021/acsami.8b1508010.1021/acsami.8b15080 ↗
36. 10.1021/jacs.7b1361110.1021/jacs.7b13611 ↗
37. 10.1039/c8qi00703a10.1039/c8qi00703a ↗
38. 10.1002/adma.20170594210.1002/adma.201705942 ↗
39. 10.1016/j.joule.2019.08.01710.1016/j.joule.2019.08.017 ↗
40. 10.3390/ma1111223710.3390/ma11112237 ↗
41. 10.1016/j.mtphys.2021.10049710.1016/j.mtphys.2021.100497 ↗
42. 10.1021/jacs.8b0937510.1021/jacs.8b09375 ↗