A5102879860- Advanced Thermoelectric Materials and Devices
- Topological Materials and Phenomena
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- 2D Materials and Applications
- Phase-change materials and chalcogenides
- Advanced Sensor and Energy Harvesting Materials
- Ferroelectric and Piezoelectric Materials
- Advanced Semiconductor Detectors and Materials
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Chalcogenide Semiconductor Thin Films
- Lanthanide and Transition Metal Complexes
- ZnO doping and properties
- Dielectric properties of ceramics
- Graphene research and applications
- Multiferroics and related materials
- Optical properties and cooling technologies in crystalline materials
- Radioactive element chemistry and processing
University of Calcutta
2022-2025
Abstract Bi 2 Te 3 , an archetypical tetradymite, is recognised as a thermoelectric (TE) material of potential application around room temperature. However, large energy gap (Δ E c ) between the light and heavy conduction bands results in inferior TE performance pristine bulk n -type . Herein, we propose enhancement through purposefully manipulating defect profile band convergence mechanism. Two samples, S1 S2, are prepared by melting method under different synthesis condition. The...
Charge carrier and phonon dynamics tuning are promising approaches for transport property modulation. Improvement of thermoelectric (TE) parameters via atomic substitution band engineering is prevalent. Besides, effective mass (m*) a crucial factor that has noteworthy influence on TE properties. Transition metals (TMs), possessing outstanding valence electronic properties distinctive state distributions, have recently been used as potential candidates enhancing performance. Here, we report...
The realization of remarkable thermoelectric (TE) properties in a novel single-crystalline quantum material is topic prime interest the field thermoelectricity. It necessitates proper understanding transport under magnetic and at low field. We report polarized Raman spectroscopic study, TE properties, magneto-resistance (MR) along with characterization Bi2Se3. Polarized spectrum confirms strong polarization effect A1g1 A1g2 phonon modes, which verifies anisotropic nature Bi2Se3 single...
Sb
Pre-cation exchange reactions can differ remarkably, even though the completely cation exchanged nanoparticles are compositionally similar.
Strategically manipulating defect dynamics in a crystalline solid can modulate lattice vibrations, thereby reducing thermal transport through the and making it suitable for diverse applications such as thermoelectrics. However, purposefully increasing concentration of defects often leaves an adverse effect on charge-carrier mobility, which drags down its thermoelectric performance. Here, to address this challenge, we have devised strategy suppress conductivity (${\ensuremath{\kappa}}_{L}$)...