Advanced Thermoelectric Materials and Devices

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• EYÜP DUMAN

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• UMUT AYDEMİR

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• HAYATİ MAMUR
• MUSTAFA NİL

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• FATİH KORKMAZ

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• SENEM KURŞUN

The influence of the structural detail and defects on the thermal and electronic transport properties of graphene nanoribbons (GNRs) is explored by molecular dynamics and non-equilibrium Green's function methods. A variety of randomly oriented and distributed defects, single and double vacancies, Stone-Wales defects,…

• HALDUN SEVİNÇLİ

Phase Change Materials (PCMs) enable thermal energy storage in the form of latent heat during phase transition. PCMs significantly improve the efficiency of solar power systems by storing excess energy , which can be used during peak demand. Likewise, they also contribute to reduced overall energy demand through passi…

We investigate electron and phonon transport through edge-disordered zigzag graphene nanoribbons based on the same methodological tool of nonequilibrium Green functions. We show that edge disorder dramatically reduces phonon thermal transport while being only weakly detrimental to electronic conduction. The behavior o…

• HALDUN SEVİNÇLİ

Cu2Se, Cu2Te and Ag-overstoichiometric compounds Cu1.98Ag0.2Se and Cu1.98Ag0.2Te were prepared by melting, annealing, followed by spark plasma sintering compaction. Low and high temperature thermoelectric properties were investigated by measuring the electrical conductivity, Seebeck coefficient, thermal conductivity a…

• SEDAT BALLIKAYA

Abstract NbFeSb‐based half‐Heusler alloys have been recently identified as promising high‐temperature thermoelectric materials with a figure of merit zT > 1, but their thermal conductivity is still relatively high. Alloying Ta at the Nb site would be highly desirable because the large mass fluctuation between them cou…

• UMUT AYDEMİR

An overview of computed thermoelectric properties for more than 48 000 inorganic compounds from the Materials Project (MP).

• UMUT AYDEMİR

In this paper, structural, elastic, and dynamical properties of Cu${}_{2}$ZnSnS${}_{4}$ and Cu${}_{2}$ZnSnSe${}_{4}$ are calculated for kesterite and stannite structures using the density functional and density functional perturbation theories. The stability of these two materials, either in a kesterite or stannite cr…

• TANJU GÜREL