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Dr Devendra Tiwari

VC Senior Fellow

Department: Mathematics, Physics and Electrical Engineering

Short Bio

I have joined Northumbria University in 2020 as a Vice-Chancellor's Senior Fellow in the Department of Mathematics, Physics and Electrical Engineering. My current research interest lies in understanding the emergence of defect-tolerance in semiconductors and using defect-tolerant semiconductors for PV and solar fuel applications. This involves materials discovery and building structural-activity relationship through a combination of atomistic computational modelling, materials processing and defect-characterization of new inorganic PV semiconductors and devices. I have developed novel methodologies to process complete solar cells using non-vacuum techniques, examining a variety of unconventional absorbers including Cu2SnS3, Cu2ZnSn(S,Se)4, BiFeO3, BiI3, BiSI, BiPS4. Recently we have been investigating these methodologies to develop PV structures for low-cost system integration (buildings, automotive, etc.) as well.

​My postdoctoral studies were undertaken at the University of Bristol in Professor David Fermin's lab as a part of an EPSRC project targeting new PV technologies based on solution-processable earth-abundant materials. Before this, I studied chemistry from Sardar Patel University, Gujarat, India (MSc 2009) and completed my PhD in 2014 investigating solution-processed Cu2SnS3 thin-films for solar cells at Dr K. C. Patel research and development centre (CHARUSAT, India) through a UGC-department of atomic energy (DAE) fellowship. My thesis work focused on low-temperature charge-transport measurements and photoemission experiments on semiconductor thin-films and PV devices.

 

My research publications can be found here:

https://scholar.google.co.uk/citations?user=4KEwr3oAAAAJ&hl=en&oi=ao

 

2 Fully-funded PhD positions

1. First one is focusses on new defect-tolerant materials for solar-energy conversion. 

"Bismuth Chalcohalides for Solar Water-Splitting​" 

https://www.findaphd.com/phds/project/bismuth-chalcohalides-for-solar-water-splitting-renu21-ee-mpee-tiwari/?p127368

 

2. Second one, is on developing sustainable semi-transparent PV technology for low-cost system integration.

Defect engineering of solution-processed semi-transparent Kesterite solar cells

https://www.findaphd.com/phds/project/defect-engineering-of-solution-processed-semi-transparent-kesterite-solar-cells-advert-reference-rdf21-ee-mpee-tiwaridevendra/?p127501

 

The application deadline is​ in the last week of January 2021.

Both the studentships are available to Home and International (including EU) students, and includes a full stipend, paid for three years at UKRI rates (for 2020/21, this is £15,285 pa) and full tuition fees. The starting date will be 1st October 2021.

If you are interested in any of these positions, please get in touch through my email (devendra.tiwari@northumbria.ac.uk​) or the link provided in FindAPhD advert. 

Devendra Tiwari

Qualifications

  • PhD May 31 2014
  • Member Royal Society of Chemistry (RSC) 2017

Key Publications

  • Please visit the Pure Research Information Portal for further information
  • Crystal and Electronic Structure of Bismuth Thiophosphate, BiPS4: An Earth Abundant Solar Absorber, Tiwari, D., Alibhai, D., Cherns, D., Fermin, D. 11 Feb 2020, In: Chemistry of Materials
  • Defect limitations in Cu2ZnSn(S, Se)4 solar cells utilizing an In2S3 buffer layer, Campbell, S., Qu, Y., Gibbon, J., Edwards, H., Dhanak, V., Tiwari, D., Barrioz, V., Beattie, N., Zoppi, G. 29 May 2020, In: Journal of Applied Physics
  • High Interfacial Hole‐Transfer Efficiency at GaFeO3 Thin Film Photoanodes, Sun, X., Tiwari, D., Fermin, D. 1 Dec 2020, In: Advanced Energy Materials
  • Above 600 mV Open-Circuit Voltage BiI3 Solar Cells, Tiwari, D., Alibhai, D., Fermin, D. 10 Aug 2018, In: ACS Energy Letters
  • Impact of Sb and Na Doping on the Surface Electronic Landscape of Cu2ZnSnS4 Thin Films, Tiwari, D., Cattelan, M., Harniman, R., Sarua, A., Fox, N., Koehler, T., Klenk, R., Fermin, D. 14 Dec 2018, In: ACS Energy Letters
  • Investigating the Role of the Organic Cation in Formamidinium Lead Iodide Perovskite Using Ultrafast Spectroscopy, Taylor, V., Tiwari, D., Duchi, M., Donaldson, P., Clark, I., Fermin, D., Oliver, T. 15 Feb 2018, In: Journal of Physical Chemistry Letters
  • Mapping Shunting Paths at the Surface of Cu2ZnSn(S,Se)(4) Films via Energy-Filtered Photoemission Microscopy, Tiwari, D., Cattelan, M., Harniman, R., Sarua, A., Abbas, A., Bowers, J., Fox, N., Fermin, D. 30 Nov 2018, In: iScience


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