Research Theme:

Semiconductor Nanostructures and 2D Materials for Advanced Energy, Environment & Biosensing Applications

      image Giri
bulet2 Current Research Areas:  
 
  • Semiconductor Nanowires, Quantum dots, Photovoltaics, Biosensors
  • Graphene, MoS2 and Hybrid 2D nanostructures
  • Optoelectronic materials and devices
  • Dilute Magnetic semiconductors
  • Hybrid Perovskite Semiconductors for Solar cells and LEDs
  • Thin Film and Plasma/ Ion beam processing
  • Organic Semiconductors Thin films and Devices
 

 

bullt3 Awards and Fellowships:

 

 

bullt4 Membership:

 

 

bullt4 Editorial Board Member:

 

 

bullt5 Major Conferences/Workshops Organized:

 

 

bullt6 Invited/ Plenary/Keynote Lectures in International/National Conferences/ Workshops:

 
  1. Mesoporous Si Nanowire Templated Growth of Organo-Metal Halide Perovskite Nanoparticles and Its Photoluminescence Enhancement (Invited Talk), The International Conference on Electron Microscopy and Allied Techniques (EMSI-2017), Mahabalipuram, India, July 17-19, 2017.

  2. Plasmonic Ag/Au/Pt Nanoparticle Decorated Mesoporous Si Nanowires and MoS2@TiO2(B) Nanobelts Heterostructures for Photovoltaic and Photocatalytic Applications (Invited Talk), 9th International Conference on Materials for Advanced Technologies (ICMAT 2017), Singapore, June 18-23, 2017.

  3. Mesoporous Si Nanowire Heterostrucures for Broad-band Light Emission, Visible Light Photocatalysis, SERS and Bio-sensing Applications (Invited Talk), Advances in Materials Science, Gauhati  University, Mar 24-25, 2017. 

  4. Graphene Quantum Dots: Formation Mechanism, Edge State Conversion, Bio-imaging and Photocatalytic Applications (Invited Talk), SPS March Meeting 2017, JNU, New Delhi, March 17-18, 2017

  5. Organic-Inorganic Hybrid Nanostructures for Solar Light Driven Photocatalysis (Invited Talk), 2nd International Conference on Emerging Materials: Characterization & Application (EMCA-2017), NIT Durgapur, March 15-17, 2017.

  6. Plasmonic Metal Nanoparticle Decorated Si Nanowires Array for Light Emission (Invited Talk), Visible Light Photocatalysis, SERS and Bio-sensing Applications, Current Trends in Condensed Matter Physics, IACS, Kolkata March 3-4, 2017.

  7. Understanding the Mechanism of Visible Photoluminescence from Chemically Derived Graphene and Graphene Quantum Dots and its Application in Bio-Imaging (invited Talk), National conference on HARD AND SOFT CONDENSED MATTER PHYSICS (NCHSCMP-2017), Tezpur University, March 2-4, 2017

  8. Multifunctional Si Nanowires Decorated with Metal Nanoparticles: White Light Emission, Photocatalysis, SERS and Bio-sensing Applications (Invited Talk), International Conference on Emerging Trends in Nanomaterials Science & Technology (ICETNMST 2017), NIT Nagaland, India. Jan 4 – 6, 2017.

  9. Functional Hybrid Nanostructures of Graphene, Graphitic Carbon Nitride, TiO2 and Plasmonic Metal Nanoparticles for Water Purification by Solar Light Driven Catalysis (Invited Talk), International Conference on Functional Materials (ICFM 2016), IIT Kraragpur, India, Dec 12-14, 2016. 

  10. Solar light Driven Photocatalysis by Functional Hybrid Nanostructures for Water Purification and Environmental Cleaning (Invited Talk), National Conference on Nanoscience and Nanotechnology-16 (NCRANNT-2016), Shillong, India, Sept 8-9, 2016.

  11. Application of Electron Microscopy in the Study of Hybrid Nanostructured Photocatalysts (Invited Talk), International Conference on Electron Microscopy (EMSI-2016), Varanasi, India, June 2-4, 2016.

  12. Efficient Physical Functionalization of Graphene and Graphene Oxide for Photocatalytic and Photoconductive Applications (Invited Talk), 6th International Conference on Advanced Nanomaterials (ANM-2015), Aveiro, Portugal, July 20-22, 2015.

  13. Site Selective Physical Functionalization of Graphene and Its Application in the Fabrication of Graphene-ZnO Nanowire Based Efficient Photodetectors (MRSI Invited Talk), Materials Research Society of India, Kalpakkam Chapter, IGCAR, Kalpakkam, Feb 5, 2015.

  14. Tunable Photoluminescence from Functionalized Graphene Quantum Dots and Graphene- ZnO Nanowires Hybrid (Invited Talk), 3rd International Conference on Nanoscience & Nanotechnology (ICONN2015), SRM University, Chennai, Feb 4-6, 2015.

  15. Site Selective Physical Functionalization of Graphene and Its Application for the Growth of Vertically Aligned ZnO Nanowires (Invited Talk), International Conference on Emerging Materials: Characterization &Application (EMCA-2014), CSIR-CGCRI, Kolkata, Dec 4-6, 2014.

  16. Nanotechnology and Its Applications in Renewable Energy (Inaugural Plenary Talk), UNISA's BRICS International symposium on Energy, Materials and Innovations, Johannesburg, South Africa, March 5-7, 2014. 

  17. Graphene based hybrid nanostructures for Optoelectronic Applications (Plenary Talk), UNISA's BRICS International symposium on Energy, Materials and Innovations, Johannesburg, South Africa, March 5-7, 2014. 

  18. Graphene as a 2-D Platform for the Fabrication of 0-D Metal and 1-D Semiconductor Nanostructures (Invited Talk), International Conference on Green Energy and Smart Materials through Science, Technology & Management, Guwahati University, Jan 21-23, 2014.

  19. Graphene- ZnO Nanowire Hybrid Nanostructures: Controlled Growth and Optoelectronic Applications (Plenary Talk), National Conference on Nanomaterials and Devices, NIT Srinagar, October 3-5, 2013.

  20. Ultrafast UV Photodetection and Efficient Second Harmonic Generation from Metal Nanoparticle Decorated ZnO Nanowires (Invited Talk), International Conference on Nanotechnology (ICNT-2013), Haldia Institute of Technology (HIT), India. October 24-25, 2013.  

  21. ZnO/Organic and ZnO/Metal Nanowire Heterostructures for Highly Efficient UV Photodetection (Invited Talk), 4th International Conference on Nanostructures Self- assembly (NANOSEA 2012), Sardinia, Italy, June 25-29, 2012.

  22. Doped ZnO Nanowire Heterostructures for Highly Sensitive & Fast Response UV Photodetectors (Keynote Lecture), Workshop on Applications Of Nanotechnology In Modern Energy Concepts, Dresden, Germany, June 4-9, 2012.

  23. Defect Engineering in Carbon Nanotubes and its Applications in Efficient Fluorescence Quenching of Different Fluorophores (Invited Talk), 1st International Conference on Functional Materials for Defence (ICFMD-2012), Pune, India, May 18-20, 2012.

bullt5 Recent Publications:

 
  1. Jitendra Kumar, H. B. Nemade, P. K. Giri, Density Functional Theory Investigation of Negative Differential Resistance and Efficient Spin Filtering in Niobium Doped Armchair Graphene Nanoribbons, Phys. Chem. Chem. Phys. (Accepted, Oct 2017), I.F. 4.123

  2. Kamal Kumar Paul and P. K. Giri, Role Of Surface Plasmons And Hot Electrons On The Strong Visible Light Photocatalysis By Defect Enriched Ag@Tio2 Nanorods, J. Phys. Chem. C. 121, 20016 (2017). I.F. 4.53 

  3. Joydip Ghosh, Ramesh Ghosh, and P. K. Giri, Tuning the Visible Photoluminescence in Al Doped ZnO Thin Film and its Application in Label-free Glucose Detection, Sensors & Actuators B 254C. 681 (2017). I.F. 5.40  

  4. G. Rajender, P. K. Giri, B. Chaudhury, In-Situ Decoration of Plasmonic Au nanoparticles on Graphene Quantum Dots-Graphitic Carbon Nitride Hybrid and Evaluation of its Visible Light Photocatalytic Performance, Nanotechnology 28 395703 (2017). I.F. 3.84

  5. Ravi Biroju and P. K. Giri, Strong Visible and Near Infrared Photoluminescence from ZnO Nanorods/ Nanowires Grown on Single Layer Graphene Studied Using Sub-band Gap Excitation, J. Appl. Phys. 122, 044302 (2017). I.F. 2.1 

  6. Kamal K. Paul and P. K. Giri, "Advances in Metal and Semiconductor Nanoparticle Decorated TiO2 Based Photocatalysts for Visible Light Photocatalysis" A Review Article in Encyclopedia of Interfacial Chemistry - Surface Science and Electrochemistry (Elsevier, 2017). (In Press).

  7. Biroju, Ravi; D. Das, R. Sharma, S. Pal, L. P. L. Mawlong, K. Bhorkar, P. K. Giri, A. Singh, T.N. Narayanan, "On the Hydrogen Evolution Reaction Activity of Graphene-MoS2 van der Waals Heterostructures", ACS Energy Letter. 2, 1351 (2017). " Among the most read articles for the past month...."

  8. Biroju Ravi, S. Pal, R. Sharma, P. K.  Giri, T. N. Narayanan, Stacking Sequence Dependent Photo-Electrocatalytic Performance of CVD Grown MoS2/Graphene van der Waals Solids, Nanotechnology 28, 085101 (2017). I.F. 3.84

  9. Gone Rajenger and P. K. Giri, Formation Mechanism of Graphene Quantum Dots and Their Edge States Conversion Probed by Photoluminescence and Raman Spectroscopy, J. Mater. Chem. C 4, 10852 (2016). I.F. 5.0

  10. Ramesh Ghosh and P. K. Giri, Silicon Nanowire Heterostructures for Advanced Energy and Environmental Applications, Nanotechonlogy 28, 012001 (2016) (Invited Review Article, IOP). I.F. 3.84

  11. Ravi K. Biroju, Biswajit Choudhury and P. K. Giri, Plasmon Enhanced Strong Visible Light Photocatalysis by Defect Engineered CVD Graphene and Graphene Oxide Physically Functionalized with Au Nanoparticles, Catal.  Sci. Technol. 6, 7101 (2016). I.F. 5.287

  12. Kamal Kr Paul, Ramesh Ghosh and P K Giri, Mechanism of Strong Visible-Light Photocatalysis by Ag2O Nanoparticle Decorated Monoclinic TiO2(B) Porous Nanorods, Nanotechnology 27, 315703 (2016). I.F. 3.84

 Recent Achievements/ NEWS:

         2. Prof. P. K. Giri received the "Nanoscience Research Leader Award 2016" from Cognizure Corporation, India.

 

           3. Our Recent Article in IOP News/ LAB TALKS: Atomic layer sequence influences catalysis

    "When stacking different 2D crystals together to form "van der Waals solids", synergetic and interface-induced effects become very important. In Nanotechnology we report the development of CVD grown atomic layers in a hydrogen evolution reaction (HER) photo-electrocatalytic cell based on single layer graphene and MoS2 layers. We use a novel layer-by-layer transfer technique and demonstrate the significance of the van der Waals stacking sequence."

 

        4. Our article entitled "On the Hydrogen Evolution Reaction Activity of Graphene-MoS2 van der Waals Heterostructures", ACS Energy Letter. 2, 1351 (2017) is " Among the most read articles for the past month...."

 

Students Achievements:

 
  • Ms. Larionett P. L. Mawlong, Research Scholar of our group (Centre for Nanotechnology) won the 1st BEST POSTER AWARD for her paper entitled "The Effect of Rapid Thermal Annealing on the Two Dimensional MoS2 Layers Grown by Chemical Vapor Deposition" at the National Conference on Nanoscience and Nanotechnology-16 (NCRANNT-2016), Sept 8-9, 2016, Shillong, India. Congratulations!   

 

 
  • Ms. Ruma Das, Research Scholar of our group (Physics) won the 3rd BEST POSTER AWARD for her paper entitled "Effect of Ball Milling on the Photophysical Properties of Nanodiamond" at the National Conference on Nanoscience and Nanotechnology-16 (NCRANNT-2016), Sept 8-9, 2016, Shillong, India. Congratulations!   

 

 

 

 
  • Mr. Ramesh Ghosh, Research Scholar of our group (Physics) won the BEST POSTER AWARD at the 'APTTEM-2016' National workshop for his poster entitled   "Electron Microscopy and Spectroscopic Studies of Arbitrary Shaped Si Nanocrystals Decorated on Vertical Si Nanowires Array". Congratulations!   

 

 
  • Mr. Ravi K Biroju, Research Scholar of our group (Centre for Nanotechnology) won the BEST POSTER AWARD (Sponsored by RSC, London) at the International Conference on Nanoscience and Technology (ICONSAT-2014), March 3-5th, 2014, Mohali, India for his poster entitled “Fabrication of graphene/ZnO and graphene/CoPc semiconducting nanowire hybrid structures and their optoelectronic properties”. (2014) Congratulations! 

 

 
  • Mr. Kamal Paul, Research Scholar of our group (Physics) won the BEST POSTER AWARD at the 'NANOS 2015' International conference for his poster entitled "Enhanced Visible Light Photocatalytic Activity of Ag2O Decorated TiO2 Nanaorods Heterostructure" (2015). Congratulations! 
Opening for JRF and Post-doctoral Positions !
 
  • Hard working and motivated students with NET / GATE qualification are welcome to join our group. Please apply online (IITG website) for PhD admission in July and December session every year. Candidates with excellent academic record will be preferred. 
 
  • If you have a PhD degree with high impact publications in the relevant area and interested for Institute Post-doctoral fellowship (IPDF), you can write to me for supporting your application for the IPDF/ SERB NPDF schemes.