Improving the thermoelectric figure of merit
نویسندگان
چکیده
منابع مشابه
Measurement of the Figure-of-merit of Thermoelectric Devices
The apparatus for evaluation of the figure of merit (ZT) of thermoelectric devices has been developed. ZT value is comprised of three physical quantities, Seebeck coefficient, electrical conductivity, and thermal conductivity. However, to date, the ZT values of the thermoelectric devices have been evaluated by Harman method due to difficulty in measuring thermal conductivity of the devices with...
متن کاملEnhancing the thermoelectric figure of merit in engineered graphene nanoribbons
We demonstrate that thermoelectric properties of graphene nanoribbons can be dramatically improved by introducing nanopores. In monolayer graphene, this increases the electronic thermoelectric figure of merit ZT e from 0.01 to 0.5. The largest values of ZT e are found when a nanopore is introduced into bilayer graphene, such that the current flows from one layer to the other via the inner surfa...
متن کاملEnhanced thermoelectric figure of merit of p-type half-Heuslers.
Half-Heuslers would be important thermoelectric materials due to their high temperature stability and abundance if their dimensionless thermoelectric figure of merit (ZT) could be made high enough. The highest peak ZT of a p-type half-Heusler has been so far reported about 0.5 due to the high thermal conductivity. Through a nanocomposite approach using ball milling and hot pressing, we have ach...
متن کاملEnhanced thermoelectric figure of merit in thin GaAs nanowires.
Combining density functional theory and the nonequilibrium Green's function method, we investigate the thermoelectric properties of thin GaAs nanowires (NWs). After identifying the most stable structures for GaAs NWs, either in wurtzite (wz) or zinc blende (zb) stacking, we present a systematic analysis on the thermoelectric properties of these NWs and their dependence on stacking type (wz or z...
متن کاملEnhanced thermoelectric figure of merit in polycrystalline carbon nanostructures
Thomas Lehmann,1,2 Dmitry A. Ryndyk,1,2,3 and Gianaurelio Cuniberti1,2,3 1Institute for Materials Science and Max Bergmann Center of Biomaterials, TU Dresden, 01062 Dresden, Germany 2Dresden Center for Computational Materials Science (DCMS), TU Dresden, 01062 Dresden, Germany 3Center for Advancing Electronics Dresden, TU Dresden, 01062 Dresden, Germany (Received 6 January 2015; revised manuscri...
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: Science and Technology of Advanced Materials
سال: 2021
ISSN: 1468-6996,1878-5514
DOI: 10.1080/14686996.2021.1903816