Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 7, Pages 4940-4946Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am4059167
Keywords
carbon nanotube; silver telluride; thermoelectric; figure of merit; Seebeck; flexible
Funding
- Academic Research Fund (AcRF) Tier 1 RG 2/13 of Ministry of Education (MOE, Singapore) (Singapore) [NRF2009EWT-CERP001-026]
- Agency for Science, Technology and Research (A*STAR) Science and Engineering Research Council (SERC) [1021700144, MPA 23/04.15.03 RDP 020/10/113]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1158666] Funding Source: National Science Foundation
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n-Type thermoelectric (TE) materials was made from carbon nanotube (CNT) so buckypapers. We used silver telluride (Ag2Te) to achieve electron injection to the CNTs. The TE characterizations on more than 50 samples show that the CNTs/Ag2Te hybrids exhibit negative Seebeck coefficients (e.g., n-type) from -30 to -228 mu V/K. Meanwhile, the tunneling coupling between the CNTs and Ag2Te increase the electrical conductance to the range of 10 000-20 000 S/m, which is higher than each single component (CNTs or Ag2Te). These n-type TE buckypapers are flexible and robust with ZT values of 1-2 orders of magnitude higher than previously reproted for CNT-based TE materials. In addition, the preparation of such buckypapers are very simple compared to a tranditonal inorganic process, without the need for hot pressing or spark sintering. These n-type TE buckypapers can provide important components for fabricating CNT-based flexible TE devices with good conversion efficiency.
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