Research Interest

• Colloidal Quantum Dots (QDs): Synthesis, metal-semiconductor hybrid structures, heterostructure engineering, and functionalization
• Optical & Electronic Properties: Fundamental studies on nanomaterial behavior
• Optoelectronic devices: Colloidal QD based optoelectronic devices (photodetectors, LEDs)
• Magnetic Nanomaterials: Exploration of superparamagnetism and exchange bias

  Academic Background

• Ph.D. JNCASR Bangalore, India
• MSc. IIT Madras, Chennai, India

  Professional Experience

• Assistant Professor in Physics (January 2025 –till date) at IIT Bhilai, India
• Marie Curie Postdoc Fellow, (June 2023-Jan 2025), TU-Dresden, Germany
• Postdoctoral Fellow, (December 2021 – May 2023), IRIG at CEA Grenoble, France
• Postdoctoral Fellow, (July 2017 – October 2021), ICFO Barcelona, Spain

  Webpage (more details)

• Personal Website

• Google Scholar Profile

  Awards

• 2023 Marie Skłodowska-Curie Actions (MSCA) Postdoctoral Fellowship Horizon Europe
• 2022 SEAL of Excellence European Commission (Horizon Europe)
• 2012 JRF in the subject Physical Sciences under CSIR fellowship scheme

Selected Publications

• Saha, A.,* (corresponding author) Yadav, R., Rivaux, C., Aldakov, D., Reiss, P.*, Water-soluble InP/ZnSe/ZnS/Al2O3 Core-Shell Heterostructure Quantum Dots with Efficient Deep Red Emission Beyond 700 nm. Small 2024, 20, 2404426
• Saha, A., Yadav, R., Aldakov, D. Reiss, P.* Gallium Sulfide Quantum Dots with Zinc Sulfide and Alumina Shells Showing Efficient Deep Blue Emission Angew.Chem.Int. Ed.2023, e202311317
• Saha, A., Kumar, G., Pradhan, S., Dash, G., Viswanatha, R., and Konstantatos, G.,* Visible-blind ZnMgO Colloidal Quantum Dot Downconverters expand Silicon CMOS Sensors Spectral Coverage into Ultraviolet and enable UV Band Discrimination. Adv. Mater. 2022, 34, 2109498
• Taghipour, N., Tanriover, I., Dalmases, M., Whitworth, G.L., Graham, C., Saha, A., Özdemir, O., Kundu, B., Purneri, V., Aydin, K., and Konstantatos G.* Ultra-thin Infrared Optical Gain Medium and Demonstration of Optically-pumped Stimulated Emission in PbS Colloidal Quantum Dot LEDs Adv. Func. Mater. 2022, 32, 2200832.
• Saha, A., Figueroba, A., and Konstantatos, G.* Ag2ZnSnS4 Kesterite Nanocrystals Expand the Availability of Heavy-metal Free Colloidal Quantum Dots. Chem. Mater. 2020, 32, 5, 2148
• Saha, A., Sohoni, S., Viswanatha, R.* Interface Modeling Leading to Giant Exchange Bias from the CoO/CoFe2O4 Quantum Dot Heterostructure” J. Phys. Chem. C, 2019, 123 (4), 2421–2427
• Saha, A., Viswanatha, R.* Magnetism at the Interface of Magnetic Oxide and Nonmagnetic Semiconductor Quantum Dots ACS Nano 2017, 11, 3, 3347–3354
• Saha, A., Shetty, A., Pavan, A.R., Chattopadhyay, S., Shibata, T., Viswanatha, R.* (2016) Uniform Doping in Quantum-Dots-Based Dilute Magnetic Semiconductor. J Phys. Chem. Lett. 2016, 7, 2420-2428
• Saha, A., Chattopadhyay, S., Shibata, T., Viswanatha, R.* Core-Shell to Doped Quantum Dots: Evolution of the Local Environment Using XAFS J Phys. Chem. C, 2016, 120, 18945-18951
• Saha, A., Chellappan K. V., Narayan, K.S., Ghatak, J., Datta, R., Viswanatha, R.* Near Unity Quantum Yield in Semiconducting Nanostructures: Structural Understanding Leading to Energy Efficient Applications J. Phys. Chem. Lett. 2013, 4, 20, 3544–3549

Patents

• R. Viswanatha, A. Saha, K. V. Chellappan, K. S. Narayan, Cd-based- chalcogenide/CdS core-shell nanomaterials, defective/defect-free core nanocrystal, methods and applications thereof. (Patent Pub No. WO2014147555 A3).
• Y. Won, Y. Kim, P. Reiss, A. Saha, R. Yadav, Nanocrystal particles and production method thereof (Patent application number- 4-2017-049369-8)