journal article·2024-03-27Open access

Boosting Thermoelectric Performance in Nanocrystalline Ternary Skutterudite Thin Films through Metallic CoTe2 Integration

Bhawna Jarwal, Suman Abbas, Ta-Lei Chou, Suneesh M. Vailyaveettil, Ashutosh Kumar, Shaham Quadir, Thi-Thong Ho, Deniz P. Wong, Li-Chyong Chen, Kuei-Hsien Chen

ACS Applied Materials & Interfaces· Volume 16· Issue 12

Abstract

High Resolution Image Download MS PowerPoint Slide Metal–semiconductor nanocomposites have emerged as a viable strategy for concurrently tailoring both thermal and electronic transport properties of established thermoelectric materials, ultimately achieving synergistic performance. In this investigation, a series of nanocomposite thin films were synthesized, embedding metallic cobalt telluride (CoTe 2 ) nanophase within the nanocrystalline ternary skutterudite (Co(Ge 1.22 Sb 0.22 )Te 1.58 or CGST) matrix. Our approach harnessed composition fluctuation-induced phase separation and in situ growth during thermal annealing to seamlessly integrate the metallic phase. The distinctive band structures of both materials have developed an ohmic-type contact characteristic at the interface, which raised carrier density considerably yet negligibly affected the mobility counterpart, leading to a substantial improvement in electrical conductivity. The intricate balance in transport properties is further influenced by the metallic CoTe 2 phase’s role in diminishing lattice thermal conductivity. The presence of the metallic phase instigates enhanced phonon scattering at the interface boundaries. Consequently, a 2-fold enhancement in the thermoelectric figure of merit (zT ∼ 1.30) is attained with CGST-7 wt. % CoTe 2 nanocomposite film at 655 K compared to that of pristine CGST.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Advanced Thermoelectric Materials and Devices · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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

Affiliations

Molecular Science and Technology Program, Taiwan International Graduate Program, Academia Sinica, Taipei 10617, Taiwan

International Graduate Program of Molecular Science and Technology, National Taiwan University, Taipei 10617, Taiwan

Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan

Center for Condensed Matter Sciences, National Taiwan University, Taipei 10617, Taiwan

Department of Physics, National Central University, Taoyuan 32001, Taiwan

Department of Materials Science and Metallurgical Engineering, Indian Institute of Technology Bhilai, Durg, Chhattisgarh 491001, India

Materials Science Center, National Renewable Energy Laboratory (NREL), Golden , Colorado 80401, United States

Helmholtz-Zentrum Berlin für Materialien und Energie, Hahn-Meitner-Platz 1, Berlin D-14109, Germany

Department of Physics, National Taiwan University, Taipei 10617, Taiwan

Center of Atomic Initiative for New Materials, National Taiwan University, Taipei 10617, Taiwan

Funding

Center for Sustainability Science, Academia Sinica · Center of Atomic Initiative for New Materials (AI-Mat), National Taiwan University

References (66)

Show source-provided references
1. 10.1038/nmat209010.1038/nmat2090 ↗
2. 10.1126/science.285.5428.70310.1126/science.285.5428.703 ↗
3. 10.1021/acs.chemrev.6b0025510.1021/acs.chemrev.6b00255 ↗
4. 10.1557/mrs2006.4410.1557/mrs2006.44 ↗
5. 10.1021/cm402150j10.1021/cm402150j ↗
6. 10.1016/j.nanoen.2011.10.00110.1016/j.nanoen.2011.10.001 ↗
7. 10.1103/PhysRevB.77.21430410.1103/PhysRevB.77.214304 ↗
8. 10.1021/acsaelm.2c0061710.1021/acsaelm.2c00617 ↗
9. 10.1016/j.nanoen.2017.10.00310.1016/j.nanoen.2017.10.003 ↗
10. 10.1016/j.pmatsci.2022.10100310.1016/j.pmatsci.2022.101003 ↗
11. 10.1002/adfm.20220054810.1002/adfm.202200548 ↗
12. 10.1016/j.mser.2022.10070010.1016/j.mser.2022.100700 ↗
13. 10.1002/aenm.20220273110.1002/aenm.202202731 ↗
14. 10.1038/s41893-022-01003-610.1038/s41893-022-01003-6 ↗
15. 10.1002/advs.20210354710.1002/advs.202103547 ↗
16. 10.1126/science.272.5266.132510.1126/science.272.5266.1325 ↗
17. Uher C. · 2001 · 69 · 139
18. 10.1038/nmat443010.1038/nmat4430 ↗
19. 10.1002/aenm.20230152510.1002/aenm.202301525 ↗
20. 10.1021/acsaem.1c0079510.1021/acsaem.1c00795 ↗
21. 10.1039/D0RA02699A10.1039/D0RA02699A ↗
22. 10.1016/j.jmst.2021.04.00710.1016/j.jmst.2021.04.007 ↗
23. 10.1016/j.nanoen.2020.10568310.1016/j.nanoen.2020.105683 ↗
24. 10.1021/acs.chemmater.6b0450610.1021/acs.chemmater.6b04506 ↗
25. 10.1103/PhysRevB.65.09411510.1103/PhysRevB.65.094115 ↗
26. 10.1021/cm200560s10.1021/cm200560s ↗
27. 10.1039/C4TA02780A10.1039/C4TA02780A ↗
28. 10.1063/1.36182810.1063/1.361828 ↗
29. 10.1021/ja111199y10.1021/ja111199y ↗
30. 10.1002/adfm.20200165110.1002/adfm.202001651 ↗
31. 10.1016/j.actamat.2015.05.02410.1016/j.actamat.2015.05.024 ↗
32. 10.1016/j.jssc.2006.04.00410.1016/j.jssc.2006.04.004 ↗
33. 10.1016/j.jssc.2012.11.02510.1016/j.jssc.2012.11.025 ↗
34. 10.1039/B913578B10.1039/B913578B ↗
35. 10.1103/PhysRevB.85.24521110.1103/PhysRevB.85.245211 ↗
36. 10.1021/acs.inorgchem.1c0394710.1021/acs.inorgchem.1c03947 ↗
37. 10.1021/cm062354g10.1021/cm062354g ↗
38. 10.1016/j.jallcom.2022.16531410.1016/j.jallcom.2022.165314 ↗
39. 10.1016/j.mtphys.2022.10088910.1016/j.mtphys.2022.100889 ↗
40. 10.1021/acsami.2c1060810.1021/acsami.2c10608 ↗
41. 10.1021/acsami.2c1136910.1021/acsami.2c11369 ↗
42. 10.1021/acsami.9b0839210.1021/acsami.9b08392 ↗
43. 10.1038/nature2366710.1038/nature23667 ↗
44. 10.1016/j.nanoen.2020.10469810.1016/j.nanoen.2020.104698 ↗
45. 10.1063/1.480809410.1063/1.4808094 ↗
46. 10.1063/1.12231810.1063/1.122318 ↗
47. 10.1063/1.496167910.1063/1.4961679 ↗
48. 10.1021/acsami.0c0179810.1021/acsami.0c01798 ↗
49. 10.1039/C6EE02467J10.1039/C6EE02467J ↗
50. 10.1002/cnl2.2810.1002/cnl2.28 ↗
51. 10.1063/1.503867510.1063/1.5038675 ↗
52. 10.1063/1.490525010.1063/1.4905250 ↗
53. 10.1016/j.jtice.2023.10489010.1016/j.jtice.2023.104890 ↗
54. 10.1103/PhysRevB.57.R1512010.1103/PhysRevB.57.R15120 ↗
55. 10.1088/1361-6528/ab91f410.1088/1361-6528/ab91f4 ↗
56. 10.1021/acs.chemmater.9b0441610.1021/acs.chemmater.9b04416 ↗
57. 10.1021/ja071875h10.1021/ja071875h ↗
58. 10.1038/nchem.95510.1038/nchem.955 ↗
59. 10.1039/C2JM15010G10.1039/C2JM15010G ↗
60. 10.1063/5.003988310.1063/5.0039883 ↗
61. 10.1103/PhysRev.103.27910.1103/PhysRev.103.279 ↗
62. 10.1063/1.490824410.1063/1.4908244 ↗
63. 10.1016/j.jeurceramsoc.2022.03.06210.1016/j.jeurceramsoc.2022.03.062 ↗
64. Pietrak K. · J. Power Technol. · 2015 · 95 · 14
65. 10.1016/0956-7151(92)90205-S10.1016/0956-7151(92)90205-S ↗
66. 10.1039/D0DT03752D10.1039/D0DT03752D ↗