• Ultrathin septuple layered PbBi2Se4 nanosheets 

  Chatterjee, Arindom; Guin, Satya N.; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Layered lead bismuth selenide, PbBi2Se4, an intergrowth compound of PbSe (rocksalt) and Bi2Se3 (hexagonal), is a topological insulator in the bulk phase. We present a simple solution based synthesis of two dimensional (2D) ...
• Low-temperature soft-chemical synthesis and thermoelectric properties of barium-filled p-type skutterudite nanocrystals 

  Banik, Ananya; Biswas, Kanishka (Elsevier Sci Ltd, 2014)

  Bulk skutteruclites, such as cobalt triantimonide (CoSb3) are promising inorganic materials for thermoelectric power generation at high temperatures. Generally, bulk CoSb3 is synthesized by high temperature solid state ...
• Nanostructuring, carrier engineering and bond anharmonicity synergistically boost the thermoelectric performance of p-type AgSbSe2-ZnSe 

  Guin, Satya N.; Negi, Devendra S.; Datta, Ranjan; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Thermoelectric "waste heat-to-electrical energy" generation is an efficient and attractive option for robust and environmentally friendly renewable energy production. Simultaneous tailoring of interdependent thermoelectric ...
• Green ionothermal synthesis of hierarchical nanostructures of SnS2 and their Li-ion storage properties 

  Jana, Manoj K.; Rajendra, H. B.; Bhattacharyya, Aninda J.; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Flower-like hierarchical architectures of layered SnS2 have been synthesized ionothermally for the first time, using a water soluble [EMIM]BF4 ionic liquid (IL) as the solvent medium. At lower reaction temperatures, the ...
• Lead-free thermoelectrics: promising thermoelectric performance in p-type SnTe1-xSex system 

  Banik, Ananya; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Lead chalcogenides are the best performers for thermoelectric power generation at mid/high temperatures; however, environmental concern about Pb prevents its use in large-scale thermoelectric applications. SnTe, a Pb-free ...
• Enhanced thermoelectric performance in p-type AgSbSe2 by Cd-doping 

  Guin, Satya N.; Chatterjee, Arindom; Biswas, Kanishka (Royal Society of Chemistry, 2014)

  Thermoelectric materials can directly convert waste heat into electrical energy and will play a significant role in future energy management. Herein, we have achieved improved thermoelectric performance in p-type Te-free ...
• Direct evidence of strong local ferroelectric ordering in a thermoelectric semiconductor 

  Aggarwal, Leena; Sekhon, Jagmeet S.; Guin, Satya N.; Arora, Ashima; Negi, Devendra S.; Datta, Ranjan; Biswas, Kanishka; Sheett, Goutam (American Institute of Physics, 2014)

  It is thought that the proposed new family of multi-functional materials, namely, the ferroelectric thermoelectrics may exhibit enhanced functionalities due to the coupling of the thermoelectric parameters with ferroelectric ...
• New methods of synthesis and varied properties of carbon quantum dots with high nitrogen content 

  Dey, Sunita; Chithaiah, Pallellappa; Belawadi, Sunita; Biswas, Kanishka; Rao, C. N. R. (Cambridge Univ Press, 2014)

  Doping of a heteroatom such as nitrogen in carbon nanomaterials provides a means to tailor their electronic properties and chemical reactivities. In this article, we present simple methods to synthesize carbon quantum dots ...
• Fabrication of large-area PbSe films at the organic-aqueous interface and their near-infrared photoresponse 

  Jana, Manoj K.; Murali, Banavoth; Krupanidhi, S. B.; Biswas, Kanishka; Rao, C. N. R. (Royal Society of Chemistry, 2014)

  An organic-aqueous interfacial reaction at room temperature has been employed to synthesize large-area self-assembled films consisting of PbSe single crystallites. The use of the films for the low-cost fabrication of ...
• Luminescence properties of boron and nitrogen doped graphene quantum dots prepared from arc-discharge-generated doped graphene samples 

  Dey, Sunita; Govindaraj, A.; Biswas, Kanishka; Rao, C. N. R. (Elsevier Science Bv, 2014)

  Substitution of heteroatoms in graphene is known to tailor its band gap. Another approach to alter the band gap of graphene is to create zero-dimensional graphene quantum dots (GQDs). Here we present the synthesis and ...
• Pressure induced structural, electronic topological, and semiconductor to metal transition in AgBiSe2 

  Rajaji, V.; Malavi, Pallavi S.; Yamijala, Sharma S. R. K. C.; Sorb, Y. A.; Dutta, Utpal; Guin, Satya N.; Joseph, B.; Pati, Swapan Kumar; Karmakar, S.; Biswas, Kanishka; Narayana, Chandrabhas (American Institute Physics, 2016)

  We report the effect of strong spin orbit coupling inducing electronic topological and semiconductor to metal transitions on the thermoelectric material AgBiSe2 at high pressures. The synchrotron X-ray diffraction and the ...
• Origin of the Order-Disorder Transition and the Associated Anomalous Change of Thermopower in AgBiS2 Nanocrystals: A Combined Experimental and Theoretical Study 

  Guin, Satya N.; Banerjee, Swastika; Sanyal, Dirtha; Pati, Swapan Kumar; Biswas, Kanishka (American Chemical Society, 2016)

  Bulk AgBiS2 crystallizes in a trigonal crystal structure (space group, P (3) over bar m1) at room temperature, which transforms to a cation disordered rock salt structure (space group, Fm (3) over barm) at similar to 473 ...
• High Power Factor and Enhanced Thermoelectric Performance of SnTe-AgInTe2: Synergistic Effect of Resonance Level and Valence Band Convergence 

  Banik, Ananya; Shenoy, U. Sandhya; Saha, Sujoy; Waghmare, Umesh V.; Biswas, Kanishka (American Chemical Society, 2016)

  Understanding the basis of electronic transport and developing ideas to improve thermoelectric power factor are essential for production of efficient thermoelectric materials. Here, we report a significantly large ...
• The Origin of Ultralow Thermal Conductivity in InTe: Lone-Pair-Induced Anharmonic Rattling 

  Jana, Manoj K.; Pal, Koushik; Waghmare, Umesh V.; Biswas, Kanishka (Wiley-V C H Verlag Gmbh, 2016)

  Understanding the origin of intrinsically low thermal conductivity is fundamentally important to the development of high-performance thermoelectric materials, which can convert waste-heat into electricity. Herein, we report ...
• Unexpected superconductivity at nanoscale junctions made on the topological crystalline insulator Pb0.6Sn0.4Te 

  Das, Shekhar; Aggarwal, Leena; Roychowdhury, Subhajit; Aslam, Mohammad; Gayen, Sirshendu; Biswas, Kanishka; Sheet, Goutam (American Institute Physics, 2016)

  Discovery of exotic phases of matter from the topologically non-trivial systems not only makes the research on topological materials more interesting but also enriches our understanding of the fascinating physics of such ...
• The effect of order-disorder phase transitions and band gap evolution on the thermoelectric properties of AgCuS nanocrystals 

  Guin, Satya N.; Sanyal, Dirtha; Biswas, Kanishka (Royal Society of Chemistry, 2016)

  Copper and silver based chalcogenides, chalco-halides, and halides form a unique class of semiconductors, as they display mixed ionic and electronic conduction in their superionic phase. These compounds are composed of ...
• Large linear magnetoresistance in topological crystalline insulator Pb0.6Sn0.4Te 

  Roychowdhury, Subhajit; Ghara, Somnath; Guin, Satya N.; Sundaresan, A.; Biswas, Kanishka (Academic Press Inc Elsevier Science, 2016)

  Classical magnetoresistance generally follows the quadratic dependence of the magnetic field at lower field and finally saturates when field is larger. Here, we report the large positive non-saturating linear magnetoresistance ...
• Reduction of thermal conductivity through nanostructuring enhances the thermoelectric figure of merit in Ge1-xBixTe 

  Perumal, Suresh; Roychowdhury, Subhajit; Biswas, Kanishka (Chinese Chemical Society, 2016)

  A promising thermoelectric figure of merit, zT, of similar to 1.3 at 725 K was obtained in high quality crystalline ingots of Ge1-xBixTe. The substitution of Bi3+ in a Ge2+ sublattice of GeTe significantly reduces the ...
• Effect of potassium doping on electronic structure and thermoelectric properties of topological crystalline insulator 

  Roychowdhury, Subhajit; Shenoy, U. Sandhya; Waghmare, Umesh V.; Biswas, Kanishka (American Institute Physics, 2016)

  Topological crystalline insulator (TCI), Pb0.6Sn0.4Te, exhibits metallic surface states protected by crystal mirror symmetry with negligibly small band gap. Enhancement of its thermoelectric performances needs tuning of ...
• The origin of low thermal conductivity in Sn1-xSbxTe: phonon scattering via layered intergrowth nanostructures 

  Banik, Ananya; Vishal, Badri; Perumal, Suresh; Datta, Ranjan; Biswas, Kanishka (Royal Society of Chemistry, 2016)

  Inorganic solids with low thermal conductivity are of great interest for thermoelectric applications. The formation of synthetic nanostructures by matrix encapsulation is one of the important strategies for thermal ...

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