Research Theme:

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

      W3.CSS

Research Highlights


 

Click here for Prof. P. K. Giri's  Google Scholar Citations

H-Index: 38,  i-Index: 104,  Citations: 4513
 
bulet2 Current Research Areas:
  • Semiconductor Nanowires, Quantum dots, Photovoltaics, Biosensors
  • Graphene, MoS2, WS2 and Hybrid 2D nanostructures
  • Optoelectronic materials and devices
  • Hybrid Perovskite Semiconductors for Solar cells and LEDs
  • Thin Film and Plasma/ Ion beam processing
  • Organic Semiconductors Thin films and Devices
  • DFT, FEM Simulations

 

 

bullt3 Awards and Fellowships:

 

 

bullt4 Professional Membership:

 

 

bullt4 Editorial Board Member:

 

 

bullt5 Major Conferences/Workshops Organized:

 

 

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

   

  1. Coupled Charge Transfer Dynamics and Plasmonic Effects on Photoluminescence from Monolayer MoS2 Decorated with WS2 Quantum Dots and Au, Ag Nanoparticles, (Invited Talk), National Conference on Light Matter Interaction at the Nanoscale (LMIN 2019), IGCAR Kalpakkam, India, July 15-17, 2019 .

  2.  Direct CVD growth of Mono-Layer MoS2 on TiO2 Nanostructure for Superior Optoelectronics and Energy Applications (Inivited Talk), 5th International Conference on Nanoscience and Nanotechnology (ICONN-2019), Chennai, India. January 28-31, 2019.  

  3. Rapid Thermal Annealing Induced Shape Evolution of Fluorine-Doped TiO2 Nanocrystals and Its High Photoluminescence Quantum Yield (Invited Talk), The International Conference on Electron Microscopy (EMSI-2018), Bhubaneswar, India, July 18-20, 2018.

  4. 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.

  5. 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.

  6. 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. 

  7. 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

  8. 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.

  9. 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.

  10. 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

  11. 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.

  12. 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. 

  13. 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.

  14. 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.

  15. 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.

  16. 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.

  17. 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.

  18. 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.

  19. 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. 

  20. 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. 

  21. 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.

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

  23. 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.  

  24. 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.

  25. 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.

  26. 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:

 
  • Sumaiya Parveen, Sk Md Obaidulla, P. K. Giri, Growth kinetics of hybrid perovskite thin films on different substrates at elevated temperature and its direct correlation with the microstructure and optical properties, Applied Surface Science 530, 147224 (2020),    I.F. 6.18 

 
 
  • Ruma Das, Sumaiya Parveen, Abhilasha Bora, P. K. Giri, Solid-state synthesis of stable and color tunable cesium lead halide perovskite nanocrystals and the mechanism of high-performance photodetection in a monolayer MoS2/CsPbBr3 vertical heterojunction , J. Mater. Chem C 8, 8917-8934 (2020).   I.F. 7.06 

 
 
  • Ruma Das, Sumaiya Parveen, Abhilasha Bora, P. K. Giri, Origin of high photoluminescence yield and high SERS sensitivity of nitrogen-doped graphene quantum dots , Carbon  160,  273-286 (2020).    I.F. 8.82 

 
 
  • Ruma Das, H. Sugimoto, M. Fujii, and P. K. Giri, Quantitative Understanding of Charge Transfer Mediated Fe3+ Sensing and Fast Photoresponse by N-doped Graphene Quantum Dots Decorated on Plasmonic Au Nanoparticles, ACS Appl Mat. Interf. 12, 4755–4768 (2020).   I.F. 8.76 
 
   
 
  • Abhilasha Bora, Larionette P. L. Mawlong, Ruma Das, and P. K. Giri, Understanding the excitation wavelength dependent spectral shift and large exciton binding energy of WS2 quantum dots and its interaction with single-walled carbon nanotubes, J. Colloids & Interf. Sci. 561, 519 (2020). I.F. 6.36
 
 
 
  • Kamal Kumar Paul, P. K. Giri, H. Sugimoto, Minoru Fujii and Biswajit Choudhury, Evidence for plasmonic hot electron injection induced superior visible light photocatalysis by g-C3N4 nanosheets decorated with Ag-TiO2(B) and Au-TiO2(B) nanorods, Solar Energy Materials and Solar Cells 201, 110053 (2019). I.F. 6.02

 
  • Ruma Das, Kamal Kumar Paul, P.K. Giri, Highly sensitive and selective label-free detection of dopamine in human serum based on nitrogen-doped graphene quantum dots decorated on Au nanoparticles: Mechanistic insights through microscopic and spectroscopic studies, Applied Surf. Sci. 490, 318 (2019). I.F. 5.01

 

  • Joydip Ghosh, Gayatri Natu, and P. K. Giri, Plasmonic hole-transport-layer enabled self-powered hybrid perovskite photodetector using a modified perovskite deposition method in ambient air, Organics Electronics 71, 175 (2019).  I.F. 3.68

  • Joydip Ghosh, Ramesh Ghosh, P. K. Giri, Strong Cathodoluminescence and Fast Photoresponse from Embedded CH3NH3PbBr3 Nanoparticles Exhibiting High Ambient-Stability, ACS Appl. Mater. Interface 11 (16), pp 14917–14931 (2019).  I.F. 8.097  

  • Gone Rajender, Upashi Goswami, P. K. Giri, Solvent Dependent Synthesis of Edge-Controlled Graphene Quantum Dots with High Photoluminescence Quantum Yield and Their Application in Confocal Imaging of Cancer Cells , J. Colloids & Inter. Sci. 541, 387 (2019).    I.F. 5.09  

  • Sumaiya Parveen, Kamal K. Paul. Ruma Das, P. K. Giri, Large Exciton Binding Energy, High Photoluminescence Quantum Yield and Improved Photostability of Organo-Metal Halide Hybrid Perovskite Quantum Dots Grown on a Mesoporous TiO2 Template, J. Colloids & Inter. Sci. 539, 619 (2019).    I.F. 5.09

  • Kamal K. Paul. Larionette P.L. Mawlong, P. K. Giri, Trion Inhibited Strong Excitonic Emission and Broadband Giant Photoresponsivity from Chemical Vapor Deposited Monolayer MoS2 Grown In-situ on TiO2 Nanostructure, ACS Appl. Mater. Interface 10, 42812. (2018).  I.F. 8.097 

  • Kamal Kumar Paul, N. Sreekanth, Ravi K. Biroju, A. J Pattison, A. Guha, T. N. Narayanan, D. E. López, N. V. Rees, W. Theis and P. K. Giri, Strongly Enhanced Visible Light photoelectrocatalytic Hydrogen Evolution Reaction in n-doped MoS2 /TiO2(B) Heterojunction by Selective Decoration of Platinum Nanoparticles at the MoS2 Edge Sites, J. Mater. Chem. A 6, 22681 (2018).  I.F. 9.93  

Selected Publications:


                
               

1.
 Scientific Reports 9, 19414 (2020).  I.F. 4.122
2. Carbon xxx (2020). I.F. 7.46
3.  J. Colloids & Interf. Sci. 564, 357-370 (2020). I.F. 6.36 
4.
 J. Colloids & Interf. Sci. 561, 519 (2020). I.F. 6.36
5.  Solar Energy Materials and Solar Cells 201, 110053 (2019). 6.02  

6.  ACS Appl. Mater. Interface 10, 42812 (2018).   I. F. 8.456              
7.    J. Mater. Chem. A 6, 22681 (2018). I.F.  10.73
8.    J. Phys. Chem. C 122, 15017 (2018). I.F. 4.58
9.    Solar Energy Materials and Solar Cells 185, 364 (2018). 6.02
10.    Sensor & Actuators B 260, 693-704 (2018). I.F. 6.3
11.    IEEE Electron Device Letters 99, 1 (2018). I.F. 3.04
12.    Appl. Catalysis B 224, 960-972 (2018). I.F. 14.229
13.    J. Phys. D. Appl. Phys. 51, 015110(2018). I.F. 2.59
14.    J. Phys. Chem. C  121, 20016 (2017). I.F. 4.53 
15.  Sensors & Actuators B. 254. 681 (2018).  I.F.6.3
16.  ACS Energy Letter 2, 1351 (2017).  I.F. 12.27
17.  J. Mater. Chem. C  4, 10852 (2016).  I.F. 5.0
18.  Catal.  Sci. Technol. 6, 7101 (2016). I.F. 5.287
19.  Phys. Chem. Chem. Phys 18, 7715 (2016).   I.F. 4.9
20.  Appl. Phys. Lett. 107, 221910 (2015). 3.82
21.  Appl. Phys. Lett. 107, 072104 (2015). I.F. 3.82
22.  Carbon 95, 228 (2015). I.F. 7.02.
23.  J. Mater. Chem. C 3, 7118 (2015). I.F. 5.976
24.  Nanotechnology 26, 145601 (2015). I.F. 3.84
25.  J. Phys. Chem. C 118, 13833 (2014), I.F. 4.85
26.  J. Phys. Chem. C 118, 13833 (2014), I.F. 4.85
27.  Optics Lett. 13, 3833 (2014). I.F. 3.589
28.  Appl. Phys. Lett. 104, 213302 (2014).  I.F. 3.82
29.  ACS Appl. Mater. Interface 6, 377 (2014).  I.F. 5.01
30.  J. Phys. Chem. C 117, 23402 (2013). I.F. 4.84
31.  Nanoscale 5, 5476 (2013). I.F. 7.2
32.  Carbon 50, 4495 (2012). I.F. 7.02
33.  J. Phys. Chem.  C  115, 24067 (2011). I.F. 4.5
34.  Nanoscale Res. Lett. 6, 320 (2011). I.F. 3.5
35.  J. Phys. Chem. B 115, 919 (2011). I.F. 3.60
36.  J. Phys. D: Appl. Phys. 42, 245402 (2009).   I.F. 2.53
37.  Appl. Phys. Lett. 78, 291 (2001).
38.  Phys. Rev. B 65, 012110 (2001).
39.  Phys. Rev. B 62, 16561 (2000).
40.  Phys. Rev. B 62, 2496 (2000).
41. Phys. Rev. B 57, 14603 (1998)
42.  Appl. Phys. Lett. 71, 682 (1997).
 
For a complete list of publications, click here.
 Recent Achievements/ NEWS:

            1. Dr. Ravi K. Biroju, Ex-student of our group, received  "Top Cited Author Award (India) from IOP Publishing, UK". His article "Catalyst free growth of    ZnO  nanowires on graphene and graphene oxide and its enhanced photoluminescence and photoresponse" has been Top 1% of the most-cited papers from India in the field of Materials published across the whole IOP Publishing portfolio in the past three years (2015 to 2017), using citations recorded in Web of Science.

              2. Prof. P. K. Giri was elected as an 'Executive council Member' of 'Electron Microscopy Society of India' (EMSI) in July 2015.

                 3. Prof. P. K. Giri received the "Nanoscience/span> Research Leader Award 2016" from Cognizure Corporation, India.

                 4. 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."

   5. 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...."

          5. Prof. P. K. Giri received the prestigious 'MRSI Medal 2020' from Materials Research Society of India. (Sept 2019)

 

Students Achievements:

  • Mr. Kamal Paul, Research Scholar of our group (Physics) won the BEST POSTER AWARD at the 'International conference on  Optoelectronics and Nanomaterials for Advanced Technology'  for his poster entitled "Enhanced Visible Light Photocatalytic by Fluorine doped Faceted Nanocrystal hierachically desined with vacancy rich TiO2 nanocrystals by vacuum annealing" (iCONMAT January 2019, CUSAT, Cochin). Congratulations! 
  • Ms. Larionett P. L. Mawlong, Research Scholar of our group (Centre for Nanotechnology) won the BEST POSTER AWARD for her paper entitled "Photoluminescence Study of CVD Grown Monolayer MoS2 Film on TiO2 Nanorods Array Template”  at the International conference on Advanced Nanomaterials and Nanotechnology (ICANN2017), Dec 2017, IIT Guwahati, India. Congratulations!   

  • Ms. Larionett P. L. Mawlong, Research Scholar of our group (Centre for Nanotechnology) won the BEST POSTER AWARD (1st Prize) 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  BEST POSTER AWARD (3rd Prize) 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 on Advanced Probing Techniques in TEM, for his poster entitled   "Electron Microscopy and Spectroscopic Studies of Arbitrary Shaped Si Nanocrystals Decorated on Vertical Si Nanowires Array". Congratulations!   

  • Mr. Kamal Paul,span> Research Scholar of our group (Physics) won the BEST POSTER AWARD at the International conference on  Nanoscience, nanotechnology and Advaced materials for his poster entitled "Enhanced Visible Light Photocatalytic Activity of Ag2O Decorated TiO2 Nanaorods Heterostructure" (2015). 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! 

Best Poster Awards

                    

                     

                      

Opening for PhD (JRF) and Post-doctoral Positions !
  • Hard working and motivated students with NET / GATE qualification are welcome to join our groupb. Please apply online (IITG website) for PhD admission in July and December session every year. Self-motivated candidates with excellent academic record will be preferred.  CSIR/NET qualified candidates can write to me anytime to join PhD under special drive scheme, subject to qualifying the admission test at IIT Guwahati. 
 

© Prof. P. K. Giri 2020