Satheesh Krishnamurthy

Satheesh Krishnamurthy

Senior Lecturer

Our Research

The research in our laboratory is focused on understanding and controlling surface and interfacial chemistry and applying this knowledge to a range of problems in semiconductor processing, nanotechnology, and sustainable energy. The role of interfaces becomes increasingly important as system dimensions are scaled downward. For example, most electronic and optoelectronic devices are undergoing rapid scaling, with lengths moving into the nanometer range and the surface to volume ratio becoming very large. The function of many next-generation electronic and nanoscale devices will therefore depend critically on the ability to control and modify the properties of their interfaces.

Graphene

For example Graphene and fucntionalised graphene represent a promising photovoltaic technology and supercapactior. The original design includes a monolayer of graphene and functionalized graphene surfaces adsorbed on a high-porosity conducting transparent electrode (the electron transporter) surrounded by an iodine electrolyte solution (the hole conductor).
 

Graphene

(Figure shows the representation of low cost flexible solar cells)
 

Functionlaised graphene surfaces/ dopant predicted to give half of the sheet resistance.  The flexible organic solar cells, which will fabricated on a plastic or Zenor substrate, retained a power conversion efficiency of 2.5–2.6%, regardless of the bending conditions, even up to a bending radius of 5.2 mm. The resultant systems are characterized by X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), UV-Vis absorption spectroscopy, and synchrotron methods, and by solar cell testing techniques including photoluminescence quenching and current-voltage measurements.
 

Graphene Layers Copper indium gallium diselenide (CIGS) is one of the most promising absorber technologies for thin film photovoltaics, and variations on CIGS solar cells are currently being manufactured by several solar cell companies. Sunlight is absorbed in the CIGS layer, and the charge is extracted and transported through the buffer layer before being collected by the electrodes. The most promising buffer layer is a very thin layer of cadmium sulfide deposited via chemical bath deposition; however, due to health concerns involved with cadmium, other materials are being studied for buffer layers, and plasma enchanced chemical vapour depositon is one most promising alternatives for depositing these thin layers of n-type semiconductors. We are currently looking at new materials and methods for the buffer layer deposition in CIGS photovoltaics via PECVD and understanding the surface and interface effects through various spectroscopic techniques…

Research Grants: 

Grants and Awards as a Principal Investigator (PI), Co-PI or Collaborator 

  1. Surface and Engineering diagnostics and solutions for copper wire contamination for aircraft parts, Labinal power ltd, 1000 pounds (consultancy job) – 2014 November
  2. Defect diagnostics and surface functionalisation of steel, Hydratight Ltd, (consultancy job) finalising project- 2016 Jan      
  3. Development of an open access remote photovoltaic laboratory and associated open educational resources for online training and education, Erasmus plus (2014 – 2018), PI Satheesh Krishnamurthy a consortium with UK, France and Greece, 160,000 Euros
  4. Smart materials and incorporation of graphene modified membranes for Energy conversion/storage- Science Without Borders, postdoc fellowship – Main Supervisor- 2014-2016, 100,000 Euros
  5. Graphene Assisted Low-cost Energy-efficient Solar cell (GALES), PI Satheesh Krishnamurthy, The OU, Liverpool University, NIT Durgapur and IACS Kolkatta, UKIERI- British Council, 60,000 Pounds (2014-2016)- 100,000 Euros
  6. ULTRAFAST PHOTONIC PROCESSES AND INTERACTIONS, Eu IRSES collaboration between DCU, IIT Madras, IIT Delhi and University of Southampton, I am one of the Collaborator, Grant Value 300,000 Euros (2013-2016)
  7. Hybrid Nano-micro systems for thin film solar cells. PI Satheesh Krishnamurthy, in collaboration with IIT Delhi, India –Ireland joint research funding, Euros – 25,000(2011-2013)
  8. Smart Nanomaterials for Microbial fuel cells, PI Satheesh Krishnamurthy, in collaboration with IIT Madras, India- Ireland joint research funding Euros – 25,000  (2011-2013)
  9. Novel transparent conductors for Microbial Fuel Cells (MFCs) for primary wastewater treatment at Northern Ireland (NI) water treatment plant. PI Dr. Enrico Marsilli, Dr. Satheesh Krishnamurthy (Collaborator), Euros 100,000 equivalent (2011-2014), QUESTOR Funding agency.
  10. Probing the surface and interfaces of gold nitride nanoparticles on different substrates and surface characterisation of novel bio materials, Satheesh Krishnamurthy PI   Euros 40,000 , travel and research grant (September 2010- December 2010)
  11. Deposition and development of novel materials for bio sensors applications- Enterprise Ireland in collaboration with National University Galway – Euros 2000
  12. Deposition of gold nitride by plasma assisted PLD, PI Satheesh Krishnamurthy, Trinity college Dublin internal grant 4000 Euros (2007)

Awards and Honours:

·        Recipient of Overseas Research Fellowship, UK (2001-2004)

·        Recipient of International Research Scholarship, University of Newcastle upon Tyne, UK (2001-2004)

·        Invited by former President APJ Abdul Kalam to discuss Nanotechnology initiatives, at the President’s office, 2006

·        Articles about my PhD work appeared in the following media

·        BBC News (http://news.bbc.co.uk/2/hi/uk_news/england/tyne/3205959.stm),

·        The Hindu (http://www.hindu.com/seta/2003/11/06/stories/2003110600020200.htm)

·        Physics web (http://physicsworld.com/cws/article/news/18469)

Invited Talks:

Industries

  1.  Nanoenergy Harvesting, Irish PV and Wind, Ireland, March 2012

  2.  Nanoenergy Harvesting and cutting edge Characterisation for devices, Aditya Birla Group, Corporate Office, Mumbai,  India, February 2012

  3. Surface Characterisation of Nanomaterials for coating applications, British Petroleum, UK, August 2011

  4.  Plasma processing of thin films and surface characterisation, Element 6, (De Beers Group of Company, Berkshire, UK, May 2011

  5.  X-ray spectroscopic investigation of metal nitrides, Diamond UK, May 2009 

Academic/Invited talk at conferences

  1. Invited guest lecture for MPhil students on Nanotechnology, Societal and Ethical Challenges, University of Cambridge, September, 2013

  2. Nanomaterials and commercialisation challenges: Blue sky to reality- Hindustan University, India, August 2013

  3. Sustainable Energy Development- from James Bond 007 to reality, Engineers Ireland Week, Dublin, Ireland, March 2013

  4. Inspiring Nanomaterials and Nanotechnology, TERI University, India, February 2013

  5. Intelligent Nanomaterials for Energy storage and harvesting, Cambridge Material Society, UK,  January 2013

  6. Low cost fabrication of Nanomaterials through PECVD and the Soft X‐ray spectroscopy a powerful tool to probe nanstructured systems at IEEE, International conference on Nanoelectronics, Singapore, December 2012

  7. Soft X-ray spectroscopy and its advantages and applications, International Conference on Recent Trends in Advanced Materials, VIT, VELLORE, February 2012

  8.  Semiconducting Nanoparticles and surface effects on Energy Applications, NANOMEET, Anna University, February, 2012

  9.  Nanomaterials, processing and Energy Harvesting, Central for Power Research Institute, Bangalore, February 2012

  10. Nanotechnology Shaken but not Stirred- Revolution of Endless Possibilities, East point Engineering College, Bangalore, February 2012

  11. Soft X-ray Spectroscopy – A powerful tool to probe Nanostructured systems, Indian Institute of Technology, Madras, DCU IIT Madras workshop, September 2011

  12. Soft X-ray Spectroscopy – A powerful tool to probe Nanostructured systems, Centre for Nanoscience and Engineering, IISc, DCU-IISc workshop, September 2011

  13.  Nanotechnology- Revolution of Endless Possibilities at Dayananda Sagar College, Bangalore, Dec 2010

  14. 3rd Bangalore Nano- Dec 2010 (http://www.bangalorenano.in/nano_2010/speakers-profile.html#satheesh)

  15. Inspirational Lecture Programme for Youth at IISc auditorium- Bangalore Nano in Bangalore 8th Dec 2010, along with Prof Sir Richard Friend, Prof Anthony Cheetam, Prof Dunbar Birnie and Mr. Stephen Bill.

  16. Exploring the origin of ferromagnetism in Dilute Ferromagnetic oxides and novel nanostructure metal nitrides – International Conference on Fundamentals and Applications of Nanoscience and technology – Jadavpur University, India- Dec 2010  

  17. Understanding the Electronic and Optical properties of micro-Nano systems through various spectroscopes and optical techniques- International Conference on Multifunctional Materials- Banaras Hindu University- Dec 2010

  18. Soft X-ray spectroscopy –An effective probe to characterise Nanostructure materials- National Conference on Experimental Tools for Material Science, Banaras Hindu University, Varanasi, India – Dec 2010

  19. Pulsed Laser Deposition of ZnO and field emission properties, INSPIRE, Ireland, June 2010

  20. X-ray spectroscopy and its applications to Nan systems- Nano materials Processing Laboratory Lecture series, Dublin City University, Ireland- September 2010

  21. Plenary talk on “ Nanotechnology – The Revolution of Endless Possibilities” at   Recent Trends in Advanced Materials conference, NIT, Karnataka, India – Feb 2010

  22. Lecture on “Nanomaterials and its applications”, SRM University, India Jan 2010

  23. Gold Nitride hard and super strong material, MAX-Lab, Sweden, 2009

  24. Prof Vasudev Aatre, former Director of Defence Research Development Organisation, India, invited me to give a lecture series for undergraduate and schoolteachers in the area of nanomaterials August 2008.

  25. Gold Nitride harder than gold, what next “Advanced nanomaterials” IIT Bombay 2008.

  26. Nanomaterials for Energy Devices, University of Madras, India, in December 2006.

  27. alk on “Electronic and optical properties of nanostructure materials”, University of Aberystwyth, UK, June 2006.

  28.  X-ray spectroscopy a powerful to investigate Nanostructure materials at R. K. M. Vivekananda College, University of Madras, India.

International Collaborators

Prof BR Mehta, Indian Institute of Delhi , India

Dr. Dermot Brabazon, Dublin City University, Ireland

Dr. Vin Dhanak, Liverpool University, UK

Prof Jinghua Guo, Advanced Light Source, Berkeley, California, US

Dr. Amit K. Chakraborty, NIT Durgapur, India

Dr. Ramprasad Gandhiraman, NASA AMES, California, US

Group Members 

Mr. Avishek Dey (PhD Student) - Currently visiting student at NASA AMES lab 

Miss. Paheli Ghosh (PhD Student)

Mr. Richard Pearson (PhD Student)

Mr. Andy Wilson (PhD Student)

Mr. Manan Mehta (PhD Student) 

Ms Lily He (Visiting student from Dublin City University)

Miss Emer Duffy (Visiting student from University of Auckland)

Miss Aathryee Sarkar (Visiting student from NIT Durgapur)

Miss Arpita Hazaria (Visiting student from NIT Durgapur)

Alumini 

1. Dr. Franco Amado (Postdoc), Currently , in Materials and Environment Laboratory - LAMMA, State University of Santa Cruz, Ilhéus - Bahia - Brasil

2. Toks Bakene (Postdoc) 

T213: Energy and Sustainability

T356 : Engineering Small World

Previous teaching at Dublin City University 

EE 535 Renewable Energy Systems Technology and Economics

Associated with:

Energy
Materials
Mechanical Engineering


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