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Debattam Sarkar
Researcher at Jawaharlal Nehru Centre for Advanced Scientific Research
Publications - 12
Citations - 260
Debattam Sarkar is an academic researcher from Jawaharlal Nehru Centre for Advanced Scientific Research. The author has contributed to research in topics: Thermoelectric effect & Thermoelectric materials. The author has an hindex of 5, co-authored 5 publications receiving 77 citations.
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Journal ArticleDOI
Highly Converged Valence Bands and Ultralow Lattice Thermal Conductivity for High-Performance SnTe Thermoelectrics.
Debattam Sarkar,Tanmoy Ghosh,Ananya Banik,Subhajit Roychowdhury,Dirtha Sanyal,Kanishka Biswas +5 more
TL;DR: A two-step optimization strategy to improve the thermoelectric performance of SnTe via modulating the electronic structure and phonon transport and the synergy among optimized carrier concentration, valence band convergence and ultralow lattice thermal conductivity is demonstrated.
Journal ArticleDOI
Ferroelectric Instability Induced Ultralow Thermal Conductivity and High Thermoelectric Performance in Rhombohedral p-Type GeSe Crystal
Debattam Sarkar,Tanmoy Ghosh,Subhajit Roychowdhury,Raagya Arora,Sandra Sajan,Goutam Sheet,Umesh V. Waghmare,Kanishka Biswas +7 more
TL;DR: High thermoelectric performance in the rhombohedral crystals of GeSe, which is stabilized at ambient conditions by alloying with 10 mol% AgBiSe2.1 crystals, is demonstrated.
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Metavalent Bonding in GeSe Leads to High Thermoelectric Performance
Debattam Sarkar,Subhajit Roychowdhury,Raagya Arora,Tanmoy Ghosh,Aastha Vasdev,Boby Joseph,Goutam Sheet,Umesh V. Waghmare,Kanishka Biswas +8 more
TL;DR: In this paper, the authors demonstrate a maximum zT ≥ 1.35 at 627 K in p-type polycrystalline rhombohedral (GeSe)0.9 (AgBiTe2 )0.1, which is the highest value reported among GeSe based materials.
Journal ArticleDOI
Intrinsically ultralow thermal conductive inorganic solids for high thermoelectric performance
TL;DR: In this paper, the chemical bonding and structural aspects in determining phonon transport through a crystalline material were discussed, and the inherent material properties like lone pair, bonding anharmonicity, presence of intrinsic rattlers, ferroelectric instability, weak and rigid substructures, etc. influence in effectively suppressing the heat transport.
Journal ArticleDOI
Enhanced Band Convergence and Ultra-Low Thermal Conductivity Lead to High Thermoelectric Performance in SnTe.
TL;DR: In this article, a co-doping strategy was proposed to improve the TE performance of self-compensated SnTe via simultaneous modulation of electronic structure and phonon transport.