Research Interests
Colloidal quantum dot based opto-electronic devices, Infrared to visible photon up-conversion, Novel nanostructures for energy harvesting and light emission, Light management and recombination dynamics in nanoscale devices
BioSketch
Research
High efficiency colloidal quantum dot infrared light emitting diodes via engineering at the supra-nanocrystalline level
2019
S. Pradhan, F. Di Stasio, Y. Bi, S. Gupta, S. Christodoulou, A. Stavrinadis and G. Konstantatos | Springer Nature
Journal: Nature Nanotechnology Pages: 72-79 , Volumes: 14 ,
Colloidal Quantum Dot‐Based Near and Shortwave Infrared Light Emitters: Recent Developments and Application Prospects
2024
S. Kumar, S. Pradhan | Wiley
Journal: Advanced Optical Materials Pages: 2400993 , Volumes: 12 ,
Nanoscale Bulk-Heterojunction Channel-Enabled Self-Powered Broadband Lateral Photodetectors for Efficient Weak Light Detection
2025
A Salunke, S. Pradhan | Wiley
Journal: Advanced Optical Materials Pages: 2500664 , Volumes: 13 ,
Achieving Ultra-Stable, Near-Unity Photoluminescence Quantum Yield Under Extreme Humidity and High Electric Field for CsPbBr3 Nanocrystals Through the Surface Attachment of ZnO Nanoparticles
2024
S. Kumar, A. Salunke, and S. Pradhan | ACS
Journal: ACS Appl. Opt. Mater. Pages: 128-138 , Volumes: 2 ,
Designing energetic landscape in the multi-bandgap lead sulphide colloidal quantum dots ensemble for efficient solar spectrum utilization
2024
A. Salunke, P. Kumar, S. Kohli, S. Pradhan | Elsevier
Journal: Solar Energy Pages: 112321 , Volumes: 269 ,
Visible‐blind ZnMgO Colloidal Quantum Dot Downconverters expand Silicon CMOS Sensors Spectral Coverage into Ultraviolet and enable UV Band Discrimination
2022
Avijit Saha, Gaurav Kumar, Santanu Pradhan, Gauttam Dash, Ranjani Viswanatha, Gerasimos Konstantatos | Wiley
Journal: Advanced materials Pages: 2109498 , Volumes: 34 ,
Ultralow Dark Current in Lead Sulfide Colloidal Quantum Dots Near-Infrared Photodetectors Achieved through Trap Passivation with Efficient Surface Ligands Attachment
2024
P Kumar, A Salunke, S Kumar, S Pradhan | ACS
Journal: ACS Applied Electronic Materials
Highly Efficient, Bright and Stable Colloidal Quantum Dot Short-Wave Infrared Light Emitting Diodes
2020
S. Pradhan, M. Dalmases, A.-B. Baspinar, G. Konstantatos, | Wiley
Journal: Advanced functional Materials Pages: 2004445 , Volumes: 30 ,
Colloidal Quantum Dot Light Emitting Diodes at Telecom Wavelength with 18% Quantum Efficiency and Over 1 MHz Bandwidth
2022
S Pradhan, M Dalmases, N Taghipour, B Kundu, G Konstantatos | Willey
Journal: Advanced Science Pages: 2200637 , Volumes: 9 ,
Low‐Threshold, Highly Stable Colloidal Quantum Dot Short‐Wave Infrared Laser enabled by Suppression of Trap‐Assisted Auger Recombination
2022
Nima Taghipour, Guy L Whitworth, Andreas Othonos, Mariona Dalmases, Santanu Pradhan, Yongjie Wang, Gaurav Kumar, Gerasimos Konstantatos | Wiley
Journal: Advanced materials Pages: 2107532 , Volumes: 34 ,
Solid-state Thin-Film Broadband Short-wave Infrared Light Emitters
2020
S. Pradhan, M. Dalmasses, G. Konstantatos | Wiley
Journal: Advanced Materials Pages: 2003830 , Volumes: 32 ,
Single-Exciton Gain and Stimulated Emission Across the Infrared Optical Telecom Band from Robust Heavily-doped PbS Colloidal Quantum Dots
2020
S. Christodoulou, A. Othonos, I. Ramiro, A. Figueroba, M. Dalmases, O. Ozdemir, S. Pradhan, G. Itskos, G. Konstantatos | ACS
Journal: Nano Letters Pages: 5909–5915 , Volumes: 20 ,
Design schemes for achieving highly efficient lead sulfide colloidal quantum dot-based shortwave infrared light emitting diodes
2024
S. Kumar, S. Pradhan | Springer Nature
Journal: Optical and Quantum Electronics Pages: 1382 , Volumes: 56 ,
Low-Cost RoHS Compliant Solution Processed Photovoltaics enabled by Ambient Condition Synthesis of AgBiS2 Nanocrystals
2020
M.Z. Akgul, A. Figueroba, S. Pradhan, Y. Bi, G. Konstantatos | ACS
Journal: ACS Photonics Pages: 588-595 , Volumes: 7 ,
Origin of the Below-Bandgap Turn-On Voltage in Light-Emitting Diodes and the High VOC in Solar Cells Comprising Colloidal Quantum Dots with an Engineered Density of States
2019
S. Pradhan, M. Dalmases, G. Konstantatos, | ACS
Journal: J. Phys. Chem. Lett. Pages: 3029-3034 , Volumes: 10 ,
Solution processed infrared- and thermophotovoltaics based on 0.7 eV bandgap PbS colloidal quantum dots
2019
Y. Bi, A. Bertran, S. Gupta, I. Ramiro, S. Pradhan, S. Christodoulou, S.-N. Majji, M. Z. Akgul, G. Konstantatos | RSC
Journal: Nanoscale Pages: 838-843 , Volumes: 11 ,
Colloidal quantum dot tandem solar cells using CVD graphene as an atomically thin intermediate recombination layer
2018
Y. Bi, S. Pradhan, M. Z. Akgul, S. Gupta, A. Stavrinadis, J. Wang, G. Konstantatos | ACS
Journal: ACS Energy Lett. Pages: 1753-1759 , Volumes: 3 ,
Infrared Solution-Processed Quantum Dot Solar Cells Reaching External Quantum Efficiency of 80% at 1.35 µm and Jsc in Excess of 34 mA cm-2
2018
Y. Bi*, S. Pradhan*, S. Gupta, M. Z. Akgul, A. Stavrinadis, G. Konstantatos (*equal contribution) | Wiley
Journal: Advanced materials Pages: 1704928 , Volumes: 30 ,
High-Open-Circuit-Voltage Solar Cells Based on Bright Mixed-Halide CsPbBrI2 Perovskite Nanocrystals Synthesized under Ambient Air Conditions
2018
S. Christodoulou, F. Di Stasio, S. Pradhan, A. Stavrinadis, G. Konstantatos | ACS
Journal: J. Phys. Chem C Pages: 7621-7626 , Volumes: 122 ,
Reducing Interface Recombination through Mixed Nanocrystal Interlayers in PbS Quantum Dot Solar Cells
2017
S. Pradhan, A. Stavrinadis, S. Gupta, G. Konstantatos | ACS
Journal: ACS Appl. Mater. Interfaces Pages: 27390-27395 , Volumes: 9 ,
Breaking the Open-Circuit Voltage Deficit Floor in PbS Quantum Dot Solar Cells through Synergistic Ligand and Architecture Engineering
2017
S. Pradhan, A. Stavrinadis, S. Gupta, S. Christodoulou, G. Konstantatos | ACS
Journal: ACS Energy Lett. Pages: 1444-1449 , Volumes: 2 ,
Trap-State Suppression and Improved Charge Transport in PbS Quantum Dot Solar Cells with Synergistic Mixed-Ligand Treatments
2017
S. Pradhan, A. Stavrinadis, S. Gupta, Y. Bi, F. Di Stasio, G. Konstantatos | Wiley
Journal: Small Pages: 1700598 , Volumes: 13 ,
Suppressing Deep Traps in PbS Colloidal Quantum Dots via Facile Iodide Substitutional Doping for Solar Cells with Efficiency >10%
2017
A. Stavrinadis, S. Pradhan, P. Papagiorgis, G. Itskos, G. Konstantatos | ACS
Journal: ACS Energy Letters Pages: 739-744 , Volumes: 2 ,
Solid-state colloidal CuInS2 quantum dot solar cells enabled by bulk heterojunctions
2016
D. So, S. Pradhan, G. Konstantatos | RSC
Journal: Nanoscale Pages: 16776-16785 , Volumes: 8 ,
Enhanced Performance with the Incorporation of Organo-metal Trihalide Perovskite in Nanostructured ZnO Solar Cell
2016
S. Kumar, S. Pradhan, A. Dhar | Elsevier
Journal: Procedia Engineering Pages: 1-6 , Volumes: 141 ,
MoO3 anode buffer layer for efficient and stable small molecular organic solar cells
2015
M.Y. Ameen, S. Pradhan, M.R. Suresh, V.S. Reddy | Elsevier
Journal: Optical Materials Pages: 134-139 , Volumes: 39 ,
Thermally evaporated fullerene (C70) to bridge the charge transport in between nanostructured zinc oxide and conjugated copolymer in hybrid solar cells
2014
S. Pradhan, S. Kumar, A. Dhar | IOP
Journal: Mater. Res. Express Pages: 25507 , Volumes: 1 ,
Enhanced performance of the nanostructured zinc oxide-conjugated polymer based hybrid solar cell with the application of a low band gap co-polymer
2014
S. Pradhan, S. Kumar, A. Dhar | ASP
Journal: Sci. Adv. Mater. Pages: 1702-1707 , Volumes: 6 ,
Low operating voltage n-channel organic field effect transistor using epoxy based photoresist gate dielectric
2014
S. Kumar, S. Pradhan, A. Dhar, | IOP
Journal: Mater. Res. Express Pages: 35103 , Volumes: 1 ,
Fabrication of N,N´-Dioctyl-3,4,9,10-perylenedicarboximide (PTCDI-C8) nanostructures through solvent influenced pi-pi stacking and their morphological impact on photovoltaic performance
2014
S. Pradhan, J. Redwine, J.T. McLeskey Jr., A. Dhar | Elsevier
Journal: Thin solid Films Pages: 423-429 , Volumes: 562 ,
Synthesis of vertically grown N,N´- Dioctyl-3,4,9,10-perylenedicarboximide nanostructure for photovoltaic application
2013
S. Pradhan, A. Dhar | AIP
Journal: J. renewable and sustainable energy Pages: 31611 , Volumes: 5 ,
Improvement of the efficiency of nanostructured zinc oxide/polymer based solar cell through incorporation of N,N Dioctyl-3,4,9,10-perylenedicarboximide nanoribbons as charge mediator
2013
S. Pradhan and A. Dhar | Elsevier
Journal: Synthetic Metals Pages: 116-120 , Volumes: 176 ,
Enhancing the performance of nanostructured zinc oxide/polymer-based hybrid solar cells using ammonia as a structural and interfacial modifier
2012
S. Pradhan, S. Karak, A. Dhar | IOP
Journal: J. Phys. D: Appl. Phys. Pages: 235104 , Volumes: 45 ,
The effects of different atmospheric conditions on device stability of organic small-molecule solar cells under constant illumination
2011
S. Karak, S. Pradhan, A. Dhar | IOP
Journal: Semicond. Sci. Technol Pages: 95020 , Volumes: 26 ,
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