K
Kallol Roy
Researcher at Indian Institute of Science
Publications - 25
Citations - 1525
Kallol Roy is an academic researcher from Indian Institute of Science. The author has contributed to research in topics: Graphene & van der Waals force. The author has an hindex of 6, co-authored 25 publications receiving 1317 citations.
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Journal ArticleDOI
Graphene-MoS2 hybrid structures for multifunctional photoresponsive memory devices
Kallol Roy,Medini Padmanabhan,Srijit Goswami,Srijit Goswami,T. Phanindra Sai,Gopalakrishnan Ramalingam,Gopalakrishnan Ramalingam,Srinivasan Raghavan,Arindam Ghosh +8 more
TL;DR: Graphene-on-MoS2 binary heterostructures display remarkable dual optoelectronic functionality, including highly sensitive photodetection and gate-tunable persistent photoconductivity, and may lead to new graphene-based optoeLECTronic devices that are naturally scalable for large-area applications at room temperature.
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Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers
Debadrita Paria,Kallol Roy,Haobijam Johnson Singh,Shishir Kumar,Srinivasan Raghavan,Arindam Ghosh,Ambarish Ghosh +6 more
TL;DR: This work has shown that upon illumination of light at an appropriate wavelength, the local electromagnetic field at the junction of the dimers can be increased dramatically, thereby resulting in the most sensitive graphene-plasmonic hybrid photodetector reported to date.
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Optically active heterostructures of graphene and ultrathin MoS2
TL;DR: In this paper, the authors present a new class of hybrid devices where the constituents are graphene and ultrathin molybdenum di-sulphide (MoS 2 ).
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Number-Resolved Single-Photon Detection with Ultralow Noise van der Waals Hybrid.
Kallol Roy,Tanweer Ahmed,Harshit Dubey,T. Phanindra Sai,Ranjit V. Kashid,Shruti Maliakal,Kimberly Hsieh,Saquib Shamim,Arindam Ghosh +8 more
TL;DR: A dual-gated bilayer graphene (BLG) and molybdenum disulphide (MoS2) hybrid is demonstrated, where opening a band gap in the BLG allows extremely low channel (receiver) noise and large optical gain (≈1010 ) simultaneously.
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Interplay of charge transfer and disorder in optoelectronic response in Graphene/hBN/MoS2 van der Waals heterostructures
TL;DR: In this article, the photoresponse of binary van der Waals heterostructures of graphene and transition metal dichalcogenides (TMDCs) was investigated.