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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…
Light emission from the layered metal 2H-TaSe and its potential applications
Mehak Mahajan, Sangeeth Kallatt, Medha Dandu +3
Conventional metals, in general, do not exhibit strong photoluminescence. 2H-TaSe is a layered transition metal dichalcogenide that possesses metallic property with charge dens…
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…
Fundamental exciton linewidth broadening in monolayer transition metal dichalcogenides
Garima Gupta, Kausik Majumdar
Monolayer Transition Metal Dichalcogenides (TMDS) are highly luminescent materials despite being sub-nanometer thick due to the ultra-short ( ps) radiative lifetime of the stro…