Papers by Sevan Chanakian
Enhanced thermoelectric properties of Sr₅In₂Sb₆via Zn-doping
Journal of Materials Chemistry, 2015
Zintl phases exhibit inherently low thermal conductivity and adjustable electronic properties, wh... more Zintl phases exhibit inherently low thermal conductivity and adjustable electronic properties, which are integral to designing high-efficiency thermoelectric materials. Inspired by the promising thermoelectric figure of merit of optimized A₅M₂Sb₆ Zintl phases (A = Ca or Sr, M = Al, Ga, In), Zn-doped Sr₅In₂₋ₓZnₓSb₆ (x = 0, 0.025, 0.05, 0.1) compounds were investigated. Optical absorption measurements combined with band structure calculations indicate two distinct energy transitions for Sr₅In₂Sb₆, one direct (Eg ∼ 0.3 eV) and the other from a lower valence band manifold to the conduction band edge (Eg ∼ 0.55 eV). Sr₅In₂Sb₆ exhibits nondegenerate p-type semiconducting behavior with low carrier concentration (∼4 × 10¹⁸ h⁺ cm⁻³ at 300 K). Charge carrier tuning was achieved by Zn²⁺ substitution on the In³⁺ site, increasing carrier concentrations to up to 10²⁰ h⁺ cm⁻³. All samples displayed relatively low thermal conductivities (∼0.7 W m⁻¹ K⁻¹ at 700 K). The Zn-doped samples exhibited sign...
Chemical Route to Yb14MgSb11 Composites with Nanosized Iron Inclusions for the Reduction of Thermal Conductivity
ACS Applied Energy Materials
ACS Applied Energy Materials
Metrics & More Article Recommendations A n author's name was misspelled in the original byline: S... more Metrics & More Article Recommendations A n author's name was misspelled in the original byline: Sevan Chanakain should be listed as Sevan Chanakian. The corrected byline is given in this erratum. The conclusions of the work are not affected.
Experimental validation of high thermoelectric performance in RECuZnP2 predicted by high-throughput DFT calculations
Materials Horizons
Predictions of high thermoelectric performance in RECuZnP2 were verified by elastic, electrical, ... more Predictions of high thermoelectric performance in RECuZnP2 were verified by elastic, electrical, and thermal measurements. Low thermal conductivities result from strong anharmonicity, with electron transport limited by polar optical phonons.
Crystal chemistry and thermoelectric transport of layered AM2X2 compounds
Inorganic Chemistry Frontiers
This review highlights the chemical diversity and transport properties of AM2X2 Zintl compounds a... more This review highlights the chemical diversity and transport properties of AM2X2 Zintl compounds and strategies to achieve a high thermoelectric figure of merit.
High Temperature Electronic and Thermal Transport Properties of EuGa2−x In x Sb2
Journal of Electronic Materials
Development of High Temperature Thermoelectric Device Technologies to Validated Materials Performance and Reliability for Advanced ThermoElectric Couple (ATEC) Program
14th International Energy Conversion Engineering Conference, 2016
Advanced Functional Materials
Uploads
Papers by Sevan Chanakian