125 citations · 425 across the 14 of their papers we have counts for
14 papers · 1 filter
Mapping Thermoelectric Transport in a Multicomponent Alloy Space
Ramya Gurunathan, Suchismita Sarker, Christopher K. H. Borg +4
Interest in high entropy alloy thermoelectric materials is predicated on achieving ultralow lattice thermal conductivity through large compositional disorder. However, h…
Mode- and Space- Resolved Thermal Transport of Alloy Nanostructures
S. Aria Hosseini, Sarah Khanniche, G. Jeffrey Snyder +3
Nanostructured semiconducting alloys obtain ultra-low thermal conductivity as a result of the scattering of phonons with a wide range of mean-free-paths (MFPs). In these materials,…
Dopant-segregation to grain boundaries controls electrical conductivity of n-type NbCo(Pt)Sn half-Heusler alloy mediating thermoelectric performance
Ting Luo, Federico Serrano-Sánchez, Hanna Bishara +12
Science-driven design of future thermoelectric materials requires a deep understanding of the fundamental relationships between microstructure and transport properties. Grain bound…
Phonon Scattering in the Complex Strain Field of a Dislocation
Yandong Sun, Yanguang Zhou, Ramya Gurunathan +5
Strain engineering is critical to the performance enhancement of electronic and thermoelectric devices because of its influence on the material thermal conductivity. However, curre…
Thermal Resistance at a Twist Boundary and Semicoherent Heterointerface
Ramya Gurunathan, Riley Hanus, Samuel Graham +2
Traditional models of interfacial phonon scattering, including the acoustic mismatch model (AMM) and diffuse mismatch model (DMM), take into account the bulk properties of the mate…
When Band Convergence is Not Beneficial for Thermoelectrics
Junsoo Park, Max Dylla, Yi Xia +3
Band convergence is considered a clear benefit to thermoelectric performance because it increases the charge carrier concentration for a given Fermi level, which typically enhances…
Probing the Phonon Mean Free Paths in Dislocation Core by Molecular Dynamics Simulation
Yandong Sun, Yanguang Zhou, Ming Hu +3
Thermal management is extremely important for designing high-performance devices. The lattice thermal conductivity of materials is strongly dependent on the structural defects at d…
On the Dopability of Semiconductors and Governing Material Properties
Anuj Goyal, Prashun Gorai, Shashwat Anand +3
To be practical, semiconductors need to be doped. Sometimes, to nearly degenerate levels, e.g. in applications such as thermoelectric, transparent electronics or power electronics.…
Analytical Models of Phonon-Point Defect Scattering
Ramya Gurunathan, Riley Hanus, Maxwell Dylla +2
Point defects exist widely in engineering materials and are known to scatter vibrational modes to reduce thermal conductivity. The Klemens description of point defect scattering is…
Critical Behavior and Anisotropy in Single Crystal SrRuO
G. Jeffrey Snyder
The magnetization of single crystal SrRuO3 is studied as a function of temperature along different crystallographic directions. The magnetocrystalline anisotropy and behavior near…
An Enormous Class of Double Half-Heusler Compounds with Low Thermal Conductivity
Shashwat Anand, Max Wood, Chris Wolverton +1
Since their discovery around a century ago, the structure and chemistry of the multi-functional half-Heusler semiconductors have been studied extensively as three component systems…
Transport property analysis method for thermoelectric materials: material quality factor and the effective mass model
Stephen Dongmin Kang, G. Jeffrey Snyder
Thermoelectric semiconducting materials are often evaluated by their figure-of-merit, zT. However, by using zT as the metric for showing improvements, it is not immediately clear w…
Low Effective Mass Leading to High Thermoelectric Performance
Yanzhong Pei, Aaron D. LaLonde, Heng Wang +1
High Seebeck coefficient by creating large density of state (DOS) around the Fermi level through either electronic structure modification or manipulating nanostructures, is commonl…
Improved Thermoelectric Cooling Based on the Thomson Effect
G. Jeffrey Snyder, Raghav Khanna, Eric S. Toberer +2
Traditional thermoelectric Peltier coolers exhibit a cooling limit which is primarily determined by the figure of merit, zT. Rather than a fundamental thermodynamic limit, this bou…