Faculty at School of Natural Sciences

Tushar Debnath

Tushar Debnath

Ramanujan fellow


Contact Information

 

  • 2016: PhD (Chemistry), Bhabha Atomic Research Centre, Mumbai, India
  • 2011: M.Sc. (Chemistry), Jadavpur University, Kolkata, India
  • 2009: B.Sc. (Chemistry Hons.), Jadavpur University, Kolkata, India

 

  • Since Jan. 2024: Ramanujan Faculty Fellow, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi-NCR
  • Jun. 2022 – Jan. 2024: Ramanujan Fellow, Centre for Nanotechnology, IIT Guwahati, India
  • Nov. 2018 – Jun. 2022: Group Leader & AvH Fellow, Department of Physics, Ludwig-Maximilians-University, Munich, Germany
  • May 2018: Visiting Scientist, SLAC National Accelerator Laboratory, California, USA
  • Sept. 2016 – Aug. 2018: Postdoctoral Research Fellow, Division of Chemistry and Biological Chemistry, Nanyang Technological University, Singapore

  • Experimental Physical Chemistry, Optical & Ultrafast Spectroscopy, Semiconductor Physics, Plasmonic Nanomaterials, Optoelectronics, Energy Research

  • 2022: Scientific Breakthrough Publication Award, CeNS LMU Munich for paper in Nano Letters
  • 2022: Ramanujan Faculty Fellowship (Chemical Sciences)
  • 2020: Best Junior Scientist Publication Award, CeNS LMU Munich for paper in Nature Communications
  • 2020: First Place Winner of ‘Science as Art’ image at the virtual Materials Research Society Fall meeting, Boston, USA
  • 2018: Alexander von Humboldt Fellowship, Germany
  • 2014: Best Poster Award, IPS-2014, Berlin, Germany
  • 2014: INST-CNR Rao Poster award for excellence in research, ICONSAT-2014, Chandigarh, Punjab, India
  • 2011: Qualified All India GATE-2011, and All India CSIR-UGC NET, June 2011
  • 2010: Qualified All India CSIR-UGC NET, December 2010

 

  • 2022: Ramanujan Fellow, India
  • 2018: Alexander von Humboldt Fellow, Germany

 

Full list of publications: https://scholar.google.co.in/citations?user=2NmKiAMAAAAJ&hl=de

2024

  1. v. Schwerin, T. Debnath*, J. Feldmann, and Q. A. Akkerman. Size-Tunable Manganese Doped Spheroidal CsPbCl3 Quantum Dots. J. Phys. Chem. Lett. 2024 (Accepted).
  2. Sahu, T. Debnath*, and K. Sahu. Reversible CsPbBr3 ↔ CsPb2Br5 Transformation via Reverse Micellar Aqueous Solution. J. Phys. Chem. Lett. 2024 (Accepted).
  3. He, Y. Wang, T. Debnath, M. Döblinger, Q. A. Akkerman, J. Feldmann, and A. Dey. Silver-nanoclusters and -vacancies Influence the Optical Properties of Spherical Cs2AgBiCl6 Nanocrystals. Adv. Opt. Mater. 2024, 2302898.
  4. H. Shah and T. Debnath*. CuInS2 Decorated Perovskite Nano-architecture: Halide-Driven Energy and Electron Transfer. J. Phys. Chem. Lett. 2024 15, 9, 2580–2586.
  5. Mann, F. He, Q. Akkerman, T. Debnath* and J. Feldmann. A Bound Exciton Resonance Modulated by Bulk and Localized Coherent Phonons in Double Perovskites. J. Phys. Chem. Lett. 2024, 15, 2169–2176.
  6. Samanta, S. Paul, and T. Debnath*. Obtaining Ligand-free Aqueous Au-Nanoparticles using Reversible CsPbBr3 ↔ Au@CsPbBr3 Nanocrystal Transformation. Small 2024, 2311712.
  7. Fang, P. Li, L. Zhang, X. Li, J. Zhang, C. Qin, T. Debnath,* W. Huang, R. Chen. Stimulating phonon bottleneck effect in organic semiconductors by charge-transfer mediated J-aggregation. J. Am. Chem. Soc. 2024, 146, 1, 961–969.

2023

  1. Bhattacharya, A. Bhakat, and T. Debnath*. Breaking AgInTe2 Quantum Dot Chain to Prepare AgInTe2-ZnS Janus Nanocrystals. Inorg. Chem. 2023, 62 (49), 20219–20227.
  2. Fang, Y. Wang, M. Kurashvili, S. Rieger, W. Kasprzyk, Qingli Wang, J. K. Stolarczyk, J. Feldmann and T. Debnath*. Simultaneous Hydrogen Generation and Exciplex Stimulated Emission in Photobasic Carbon Dots. Angew. Chem. Int. Ed. 2023, e202305817.
  3. Das, and T. Debnath*. Giant Exciton Stokes Shift in Interfacially Prepared Cs(Mn/Pb)Cl3 Alloy Nanoplatelets. J. Phys. Chem. Lett. 2023, 14 (25), 5940−5948 (Front Cover).
  4. Manna, T. Debnath* and S. Bhandari. Chemical coupling of halide perovskite nanocrystals with metal quinolate complex for white light generation. Chem. Commun. 2023, 59, 1469-1472.
  5. Manna, S. Pal, T. Goswami, S. Bhandari and T. Debnath*. Halide Driven Halogen-Hydrogen Bonding versus Chelation in Perovskite Nanocrystals: A Concept of Charge Transfer Bridging. J. Phys. Chem. Lett. 2023, 14 (2), 354−362.

2022

  1. Das and T. Debnath*. Water Triggered Chemical Transformation of Perovskite Nanocrystals. Chem. Eur. J. 2022, 29 (5), e202202475. DOI: 10.1002/chem.202202475.
  2. Barfüßer, S. Rieger, A. Dey, A. Tosun, Q. A. Akkerman, T. Debnath* and J. Feldmann. Confined Excitons in Spherical-like Halide Perovskite Quantum Dots. Nano Letters 2022, 22, 22, 8810–8817 (Front Cover).
  3. Wu, Y. Wang, M. Kurashvili, A. Dey, M. Döblinger, Q. Zhang, J. Feldmann, H. Huang and T. Debnath*. Interfacial Manganese-doping in CsPbBr3 Nanoplatelets by Employing a Molecular Shuttle. Angew. Chem. Int. Ed. 2022, 61 (15), e202115852.
  4. Debnath*. Introducing…Angew. Chem. Int. Ed. 2022, 61 (15), e202201081.
  5. Kurashvili, I. Polishchuk, A. Lang, S. Strohmair, A. Richter, S. Rieger, T. Debnath,* B. Pokroy and J. Feldmann. Disorder and Confinement Effects to Tune the Optical Properties of Amino Acid Doped Cu2O Crystals. Adv. Funct. Matter. 2022, 32 (27), 2202121.

Before 2022

  1. Debnath,* D. Sarker, H. Huang, Z.-K. Han, A. Dey, L. Polavarapu, S. V. Levchenko, and J. Feldmann. Coherent Vibrational Dynamics Reveals Lattice Anharmonicity in Organic-inorganic Halide Perovskite Nanocrystals. Nat. Commun. 2021, 12, 2629.
  2. Paul, E. Bladt, A. Richter, M. Döblinger, Y. Tong, H. Huang, A. Dey, S. Bals, T. Debnath,* L. Polavarapu and J. Feldmann. Manganese Doping Induced Quantum Confinement within Host Perovskite Nanocrystals through Ruddlesden Popper Defects. Angew. Chem. Int. Ed. 2020, 59 (17), 6794-6799 (Back Cover).
  3. Fang, T. Debnath, S. Bhattacharyya, M. Döblinger, J. Feldmann & J. K. Stolarczyk. Photobase effect for just-in-time delivery in photocatalytic hydrogen generation. Nat. Commun. 2020, 11 (1), 5179.
  4. Debnath and H. N. Ghosh. Ternary Metal Chalcogenides: Into the Exciton and Bi-exciton Dynamics. J. Phys. Chem. Lett. 2019, 10, 20, 6227-6238 (Front Cover).
  5. Debnath, M. S. B. M. Yusof, P. J. Low, Z.-H. Loh. Ultrafast Structural Rearrangement Dynamics Induced by the Photodetachment of Phenoxide in Aqueous Solution. Nat. Commun. 2019, 10, 2944.
  6. Debnath, D. Sebastian, S. Maiti and H. N. Ghosh. Tuning Hole and Electron Transfer from Photo-excited CdSe Quantum Dot to Phenol Derivatives: Effect of Electron Donating and Withdrawing Moiety. Chem. Eur. J 2017, 23, 7306 – 7314.
  7. Debnath, K. Parui, S. Maiti and H. N. Ghosh. An Insight of Interface through Excited State Carrier Dynamics for Promising Enhancement of Power Conversion Efficiency in Mn doped CdZnSSe Gradient Alloy. Chem. Eur. J 2017, 23, 3755 – 3763.
  8. Debnath, S. Maiti and H. N. Ghosh. Unusually Slow Electron Cooling to Charge Transfer State in CdTeSe Alloy Nanocrystal Mediated Through Mn Atom. J. Phys. Chem. Lett. 2016, 7, 1359–1367.

  1. “Halide Driven Energy and/or Charge Transfer Dynamics in Perovskite Nanocomposite” NaMoSBio, IISER Kolkata, January 2024. (Invited Talk)
  2. “Exciton, Biexciton and Charge Transfer Dynamics in Perovskite Nanocrystals” TSRP, BARC Mumbai, January 2024. (Invited Talk)
  3. “Water-triggered Strategy for Doping in Low-dimensional Perovskites” HyPE, IACS Kolkata, December 2023. (Invited Talk)
  4. “Excitons and Coherent Phonons in Perovskite Nanocrystals” Department of Chemistry, IIT Guwahati, August 2023. (Invited Talk)
  5. “Excitons and Coherent Phonons in Perovskite Nanocrystals” APMD 2023, S & T online platform, India, June 2023. (Oral Talk)
  6. “Exciton, Biexciton and Coherent Phonon Dynamics of Versatile Perovskite Nanocrystals: Nanocubes, Nanopletelets and Spherical Quantum Dots” UFS 2022, IISER TVM, India, November 2022. (Contributed Talk)
  7. “Intrinsic Lattice Anharmonicity in Hybrid Perovskite Nanocrystals”, EMRS Fall (Online), Warsaw, Poland, September 2021 (Oral Talk).
  8. “Coherent Phonon Dynamics Reveals Intrinsic Lattice Anharmonicity in Hybrid Perovskite Nanocrystals”, ICL2020 (online), China, July 2021 (Oral Talk).
  9. “Vibrational Wave-packet Dynamics Reveals Intrinsic Lattice Anharmonicity in Hybrid Perovskite Nanocrystals”, Internet NanoGe Conference on Nanocrystals 2021, Munich (Oral Talk)
  10. “Phonon Vibrational Dynamics Reveals Intrinsic Lattice Anharmonicity in Hybrid Perovskite Nanocrystals”, Materials Research Society Fall meeting 2020 (virtual), Boston, USA (Oral Talk).

2024 - 2027     DST-SERB Core Research Grant (CRG), India (CRG/2023/000519), Amount: ~70 Lakh (Accepted)

2022 - 2027     DST-SERB, India (RJF/2021/000125), Amount: ~38 Lakh (Ongoing)

2018 – 2021    Alexander von Humboldt Foundation, Germany (AOSt-Nr. 15070118238289), Amount: ~20 Lakh (Completed)

  • Regular peer-reviewer of several ACS, RSC, Willey, Nature, Science, Elsevier, etc. journals.