Improved thermoelectric performance of n-type Ca and Ca-Ce filled skutterudites
نویسندگان
چکیده
منابع مشابه
Improved Thermoelectric Performance of (Fe,Co)Sb<sub>3</sub>-Type Skutterudites from First-Principles
Skutterudite materials have been considered as promising thermoelectric candidates due to intrinsically good electrical conductivity and tailorable thermal conductivity. Options for improving thermal-to-electrical conversion efficiency include identifying novel materials, adding filler atoms, and substitutional dopants. Incorporating filler or substitutional dopant atoms in the skutterudite com...
متن کاملOptical pseudogap from iron states in filled skutterudites AFe4Sb12 (A=Yb, Ca, Ba).
Optical investigations are presented of the filled skutterudites AFe4Sb12 with divalent cations A=Yb, Ca, Ba. For each of these compounds a very similar pseudogap structure in the optical conductivity develops in the far-infrared spectral region at temperatures below 90 K. Highly accurate local-density approximation electronic band structure calculations can consistently explain the origin of t...
متن کاملHigh-performance n-type YbxCo4Sb12: from partially filled skutterudites towards composite thermoelectrics
The filling fraction limit (FFL) of skutterudites, that is, the complex balance of formation enthalpies among different species, is an intricate but crucial parameter for achieving high thermoelectric performance. In this work, we synthesized a series of YbxCo4Sb12 samples with x=0.2–0.6 and systemically studied the FFL of Yb, which is still debated even though this system has been extensively ...
متن کاملSolubility study of Yb in n-type skutterudites YbxCo4Sb12 and their enhanced thermoelectric properties
Citation Yang, J. et al. " Solubility study of Yb in n-type skutterudites Ybx Co4 Sb12 and their enhanced thermoelectric properties. Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Yo...
متن کاملBand Structure Engineering and Thermoelectric Properties of Charge-Compensated Filled Skutterudites
Thermoelectric properties of semiconductors are intimately related to their electronic band structure, which can be engineered via chemical doping. Dopant Ga in the cage-structured skutterudite Co4Sb12 substitutes Sb sites while occupying the void sites. Combining quantitative scanning transmission electron microscopy and first-principles calculations, we show that Ga dual-site occupancy breaks...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 2014
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.4904187