Research Interest

Focus- Renewable Energy & Clean Environment

  1. Solid State Inorganic Chemistry of Metal Chalcogenides/Chalco-Halides
  2. Thermoelectric Materials- Waste Heat to Electrical Energy.
  3. Inorganic Nanomaterials (for renewable energy and sustainability)
  4. Topological Insulators and Dirac Semimetal
  5. Synthesis of New Inorganic Solids  and Structure Property Relationship
  6. Synchrotron X-ray Based Techniques- Diffraction, SAXS and EXAFS
  7. Removal of heavy metals and Radionuclides

Recent Discoveries

1.Low Thermal Conductivity and High Thermoelectric Performance in (GeTe)1–2x(GeSe)x(GeS)x: Competition between Solid Solution and Phase Separation, J. Am. Chem. Soc., 2017, 139, 9382.
2. Reversible and efficient sequestration of Cs from water by layered metal thiophosphate, K0.48Mn0.76PS3.H2O, Chem. Euro. J., 2017, 23, 11085-11092.
3. Intrinsic rattler-induced low thermal conductivity in zintl type TlInTe2, J. Am. Chem. Soc., 2017,139, 4350. 4. High power factor and enhanced thermoelectric performance of SnTe-AgInTe2: Synergistic effect of resonance level and valence band convergence, J. Am. Chem. Soc., 2016, 138, 13068.
5. The origin of ultralow thermal conductivity in InTe: Lone-pair-induced anharmonic rattling, Angew. Chem. Int. Ed., 2016, 55, 7592. 6. The origin of low thermal conductivity in Sn1-xSbxTe: phonon scattering via layered intergrowth nanostructures, Energy Environ. Sci., 2016, 9, 2011.
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7. Solution-based synthesis of layered intergrowth compounds of the homologous PbmBi2nTe3n+m series as nanosheets, Angew. Chem. Int. Ed., 2015, 54, 5623. 8. Temperature dependent reversible p-n-p type conduction switching with colossal change in thermopower of semiconducting AgCuS, J. Am. Chem. Soc., 2014, 136, 12712.



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