75 citations · 399 across the 16 of their papers we have counts for
16 papers
Dielectrics for Two-Dimensional Transition Metal Dichalcogenide Applications
Chit Siong Lau, Sarthak Das, Ivan A. Verzhbitskiy +6
Despite over a decade of intense research efforts, the full potential of two-dimensional transition metal dichalcogenides continues to be limited by major challenges. The lack of c…
Harmonic to anharmonic tuning of moiré potential leading to unconventional Stark effect and giant dipolar repulsion in WS/WSe heterobilayer
Suman Chatterjee, Medha Dandu, Pushkar Dasika +6
Excitonic states trapped in harmonic moiré wells of twisted heterobilayers is an intriguing testbed. However, the moiré potential is primarily governed by the twist angle, and its…
Liquid Metal Printed Ultrathin Oxides for Monolayer WS2 Top-Gate Transistors
Yiyu Zhang, Dasari Venkatakrishnarao, Michel Bosman +16
Two-dimensional (2D) semiconductors are promising channel materials for continued downscaling of complementary metal-oxide-semiconductor (CMOS) logic circuits. However, their full…
Highly nonlinear biexcitonic photocurrent from ultrafast inter-layer charge transfer
Sarthak Das, Garima Gupta, Suman Chatterjee +3
Strong Coulomb interaction in monolayer semiconductors allows them to host optically active large many-body states, such as the five-particle state, charged biexciton. Strong nonli…
Trion-trion annihilation in monolayer WS
Suman Chatterjee, Garima Gupta, Sarthak Das +3
Strong Coulomb interaction in monolayer transition metal dichalcogenides can facilitate nontrivial many-body effects among excitonic complexes. Many-body effects like exciton-excit…
Probing biexciton in monolayer WS through controlled many-body interaction
Suman Chatterjee, Sarthak Das, Garima Gupta +3
The monolayers of semiconducting transition metal dichalcogenides host strongly bound excitonic complexes and are an excellent platform for exploring many-body physics. Here we dem…
Two-dimensional ReS2: Solution to the Unresolved Queries on Its Structure and Inter-layer Coupling Leading to Potential Optical Applications
Janardhan Rao Gadde+, Anasuya Karmakar+, Tuhin Kumar Maji+ +12
Over the last few years, ReS2 has generated a myriad of unattended queries regarding its structure, the concomitant thickness dependent electronic properties and apparently contras…
Combinatorial Large-area MoS2/Anatase-TiO2 interface: A Pathway to Emergent Optical and Opto-electronic Functionalities
Tuhin Kumar Maji, J R Aswin, Subhrajit Mukherjee +15
Interface of transition metal dichalcogenide (TMDC) and high-k dielectric transition metal oxides (TMO) had triggerred umpteen discourses due to the indubitable impact of TMO in re…
Highly tunable layered exciton in bilayer WS: linear quantum confined Stark effect versus electrostatic doping
Sarthak Das, Medha Dandu, Garima Gupta +6
In 1H monolayer transition metal dichalcogenide, the inversion symmetry is broken, while the reflection symmetry is maintained. On the contrary, in the bilayer, the inversion symme…
Anharmonicity in Raman-active phonon modes in atomically thin MoS
Suman Sarkar, Indrajit Maity, H. L. Pradeepa +10
Phonon-phonon anharmonic effects have a strong influence on the phonon spectrum; most prominent manifestation of these effects are the softening (shift in frequency) and broadening…
Gate-tunable trion switch for excitonic device applications
Sarthak Das, Sangeeth Kallatt, Nithin Abraham +1
Trions are excitonic species with a positive or negative charge, and thus, unlike neutral excitons, the flow of trions can generate a net detectable charge current. Trions under fa…
Highly Sensitive, Fast Graphene Photodetector with Responsivity A/W Using Floating Quantum Well Gate
Krishna Murali, Nithin Abraham, Sarthak Das +2
Graphene, owing to its zero bandgap electronic structure, is promising as an absorption material for ultra-wideband photodetection applications. However, graphene-absorption based…
Strong Single- and Two-Photon Luminescence Enhancement by Nonradiative Energy Transfer across Layered Heterostructure
Medha Dandu, Rabindra Biswas, Sarthak Das +5
The strong light-matter interaction in monolayer transition metal dichalcogenides (TMDs) is promising for nanoscale optoelectronics with their direct band gap nature and the ultra-…
Layer degree of freedom for excitons in transition metal dichalcogenides
Sarthak Das, Garima Gupta, Kausik Majumdar
Layered transition metal dichalcogenides (TMDCs) host a variety of strongly bound exciton complexes that control the optical properties in these materials. Apart from spin and vall…
Inter-layer charge transport controlled by exciton-trion coherent coupling
Sangeeth Kallatt, Sarthak Das, Suman Chatterjee +1
The possibility of electrical manipulation and detection of charged exciton (trion) before its radiative recombination makes it promising for excitonic devices. Using a few-layer g…
Gate tunable WSe2/SnSe2 backward diode with ultrahigh reverse rectification ratio
Krishna Murali, Medha Dandu, Sarthak Das +1
Backward diodes conduct more efficiently in the reverse bias than in the forward bias, providing superior high frequency response, temperature stability, radiation hardness, and 1/…