Male, Indian, Born on 16th April, 1990

Research Scholar (SRF)

Dept. of Physics, Indian Institute of Technology Kharagpur,


Visiting Student under Erasmus Mundus LEADER

Sensor Lab, Department of Information Engineering,

University of Brescia

Tel: +91-9547905973/+393891594468

Email: rishimaiti11@gmail.com/rmaiti11@phy.iitkgp.ernet.in/ r.maiti@studenti.unibs.it


Doctor of Philosophy (Ph D): (Starting date -19/06/2012, tentative defense date - 07/2017))

Topic: Studies on the Optoelectronic device applications based on Graphene hybrid nanostructures

Supervisor: Prof. S. K. Ray

Institution: Indian Institute of Technology Kharagpur (IIT-KGP), Department of Physics

Master of Science (M Sc): Major in Physics (2010-2012)

Score: 8.75 out of 10.00 (CGPA), 1st class

Institution: Indian Institute of Technology Kharagpur (IIT-KGP), Department of Physics

Bachelor of Science (B Sc): Major in Physics (2007-2010)

Score: 75.63 %, 1st class

Institution: Ramakrishna Mission Vidyamandira, University of Calcutta, West Bengal, India

Research Interest

  • Fabrication and characterization of Graphene hybrid nanostructure based optoelectronic devices (Photodetector, Solar cell, LEDs, Saturable absorber, optical modulator etc.).
  • Study of the Interaction between graphene and metallic nanostructures for hybrid photonic device applications.
  • Investigation of band gap tuning of Graphene by different reduction processes.
  • Study the electrical and optical properties of Graphene nanostructures (Graphene q-dots & Nanoribbons).
  • Van Der Waals Heterostructures

Research Outline

My Research is primarily focused on how to enhance the light-matter interaction of graphene since the absorption of graphene is less and it is also a zero band gap materials. So the idea is to couple more light to graphene and also to get the selectivity in the photodetection by opening the band gap. So, during my course of Phd work, I have tried several steps like i) controlling the degree of reduction to tune the band gap, ii) to integrate with noble mettalic NPs to use LSPR effect iii) integrating graphene with photonic crystal microcavity iv) graphene nanostructures and also try to fabricate v) Van Der Waals heterostructures to increase the performance of graphene photodetector.

Selected List of Publications

1. R. Maiti, S. Manna, A. Midya, and S. K. Ray, “Broadband photoresponse and rectification of novel graphene oxide/n-Si heterojunctions”, Optics Express, 21, 22, 26034-43 (2013).
2. R. Maiti, A. Midya, and C. Narayana, and  S.K. Ray, “Tunable Optical Properties from Graphene Oxide by tailoring Oxygen Functionalities using Infrared Irradiation”, Nanotechnology 25, 495704 (2014).
3. R. Maiti, Tridib K. Sinha, Subhrajit Mukherjee, Basudam Adhikari, Samit K. Ray, “Metal-Arene Type Silver Nanoparticles Embedded Few-Layer Graphene Sheets: A Two Dimensional Plasmonic Nanostructures for Enhanced and Selective Visible Photodetection”, plasmonics (2016).
4. R. Maiti, Subhrajit Mukherjee, S. Haldar, D. Bhowmick and Samit K. Ray, “Novel thermal quenching characteristics of luminescent carbon nanodots via tailoring the surface chemical groups”, Carbon (2016).
5. S. Mukherjee, R. Maiti, A. midya, S. Das, and S.k. Ray, “Tunable Direct Bandgap Optical Transitions in MoS2 Nanocrystals for Photonic devices”, ACS Photonics, 2 (6), pp 760–768 (2015).
6. P. Das, R. Maiti, P. Barman, S. K. Ray & S. B. N. Bhaktha, “Mono- to few-layered graphene oxide embedded randomness assisted microcavity amplified spontaneous emission source”, Nanotechnology 27 (5), 055201 (2015).
7. S. Mukherjee, R. Maiti, A. Katiyar, S. Das and Samit K. Ray  “Novel Colloidal MoS2 Quantum dot heterojunction on Si Platform for Multifunctional Optoelectronic Devices, Accepted, Scientific Reports (2016).
8. P. Das, R. Maiti, S. K. Ray, and Shivkaran B. N. Bhakta , “Increased photon density of states at defect-mode frequencies led enhancement of tunability of spontaneous emission from Eu2+, 3+ doped SiO2 / SnO2 one-dimensional photonic crystals”, Mater. Res. Express 2 036201, (2015).
9. T. K. Sinha, S. Ghosh, R. Maiti, S. Jana, D. Mondal, S. K. Ray “Graphene-Silver Induced Self-polarized PVDF Based Flexible Plasmonic Nanogenerator towards the Realization for New Class of Self Powered Optical Sensor”, Accepted, ACS applied materials and Interfaces (2016).
10. A. Midya, A. Ghorai, S. Mukherjee, R. Maiti, and S. K. Ray, “Hydrothermal Growth of Few Layer 2H-MoS2 for Heterojunction Photodetector and Visible Light Induced Photocatalytic Applications”, JMC A (2016).