The University of Southampton

Dr Tasmiat Rahman 

  • Latest news:
    • ****PhD positions available**** Please see HERE for more information!
    • Our paper "High symmetry nano-photonic quasi-crystals providing novel light management in silicon solar cells" is accepted in Nano Energy!
    • Our paper "Optoelectronic properties of ultrathin ALD silicon nitride and its potential as a hole-selective nanolayer for high efficiency solar cells" is published in APL Materials
    • Awarded new stimulus fund to explore the use of Silicon Nanowire/2D material heterostructures for energy storage.

Dr Tasmiat Rahman is a Lecturer (Assistant Professor) in the School of Electronics and Computer Science (ECS) at the University of Southampton. He graduated from Imperial College London in 2011, with a first-class honours degree in Electrical and Electronic Engineering, and then awarded a PhD in 2016, for his work on light trapping nano-structures for silicon photovoltaics. He then joined ECS as a post-doctoral researcher, working on tandem-cells and quantum materials. He was promoted to Senior Research Fellow in 2018, where he worked on black silicon surfaces for industrial photovoltaics. Tasmiat was appointed as a lecturer for ECS in 2021. He now leads a team of researchers focusing on developing combined solar and energy storage technologies, building their sustainability through integration of IoT networks, and understanding the socio-economic barriers to implementation within developing communities. 

Tasmiat has published 17 journal papers and delivered over 20 oral/poster presentations at national and international conferences. His research output is also highlighted by winning the IET Innovation Award in 2019. He is an organising committee member for the international PV-SAT conference and also co-ordinates the annual PV training day for the EPSRC SuperSolar Hub. Tasmiat currently teaches on a broad range of modules within electrical and electronic engineering, as well as supervising PhD and MSc students, and has been recognised as a Fellow of the Higher Education Academy


  • Zepler Institute - ‘Large-area 2D-MoS2/black-Si heterostructure for next-generation energy storage’, Co-I, 2021
  • MECS - ‘E-cooker network for Urban Slums: Benefits and Barriers to implementation’, PI, 2020
  • GCRF - ‘Development of sustainable energy among river island communities in Bangladesh’, PI, 2019
  • EPSRC - ‘Black Silicon Photovoltaics’, Researcher Co-I, 2018


Research interests

  • Silicon Photovoltaics
  • Interdigitated back contact (IBC) solar cells
  • Tandem and Bifacial Modules
  • Floating PV
  • Agrophotovoltaics
  • IoT for PV Systems
  • PV for developing communities


  • ELEC1206: Electrical Materials and Fields
  • ELEC3207: Nanoelectronic Devices
  • ELEC6220: Power System Economics
  • ELEC6207: Quantum Devices and Technology


Rahman, Tasmiat, Bonilla, Ruy, Nawabjan, Amirjan, Wilshaw, Peter and Boden, Stuart (2017) Passivation of all-angle black surfaces for silicon solar cells. Solar Energy Materials and Solar Cells, 160, 444-453. (doi:10.1016/j.solmat.2016.10.044).

(2015) Epitaxial Interdigitated Back Contact (IBC) solar cell test platform for novel light trapping schemes. Proceedings of the 31st European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC), Germany. 14 - 18 Sep 2015. pp. 783-787 . (doi:10.4229/EUPVSEC20152015-2AV.3.32).

Rahman, Tasmiat, Nawabjan, Amirjan, Tarazona, Antulio, Bagnall, Darren M. and Boden, Stuart (2016) Junction formation with HWCVD and TCAD model of an epitaxial back-contact solar cell. IEEE Journal of Photovoltaics, 6 (6), 1-7. (doi:10.1109/JPHOTOV.2016.2598277).

Crudgington, Lee, Rahman, Tasmiat and Boden, Stuart (2016) Dataset for "Development of Amorphous Silicon Solar Cells with Plasmonic Light Scattering". University of Southampton doi:10.5258/SOTON/404119 [Dataset]

Crudgington, Lee, Rahman, Tasmiat and Boden, Stuart (2017) Development of amorphous silicon solar cells with plasmonic light scattering. Vacuum, 139, 164-172.

Rahman, Tasmiat, To, Alexander, Pollard, Michael E., Grant, Nicholas E., Colwell, Jack, Payne, David N.R., Murphy, John D., Bagnall, Darren M., Hoex, Bram and Boden, Stuart A. (2018) Minimising bulk lifetime degradation during the processing of interdigitated back contact silicon solar cells. Progress in Photovoltaics: Research and Applications, 26 (1), 38-47. (doi:10.1002/pip.2928).

Rahman, Tasmiat and Boden, Stuart A. (2017) Optical modelling of black silicon for solar cells using effective index techniques. IEEE Journal of Photovoltaics, 7 (6), 1556-1562. (doi:10.1109/JPHOTOV.2017.2748900).

(2018) Characterization of epitaxial heavily doped silicon regions formed by hot-wire chemical vapor deposition using micro-Raman and microphotoluminescence spectroscopy. IEEE Journal of Photovoltaics, 8 (3), 813-819. (doi:10.1109/JPHOTOV.2018.2818284).

Rahman, Tasmiat, Nguyen, Hieu T., Tarazona, Antulio, Shi, Jingxing, Han, Young Joon, Franklin, Evan, Macdonald, Daniel and Boden, Stuart A. (2018) Characterization of epitaxial heavily-doped silicon regions formed by HWCVD using Micro-Raman and Micro-Photoluminescence Spectroscopy. IEEE Journal of Photovoltaics, 8 (3), 813-819. (doi:10.1109/JPHOTOV.2018.2818284).

Scheul, Tudor, Emilian, Khorani, Edris, Rahman, Tasmiat and Boden, Stuart (2018) Metal-assisted chemically etched black silicon for crystalline silicon solar cells. PV-SAT 14, Imperial College London, United Kingdom. 18 - 20 Apr 2018. 4 pp .

Khorani, Edris, Scheul, Tudor, Emilian, Tarazona, Antulio, Rahman, Tasmiat and Boden, Stuart (2018) Optimisation of ex-situ annealing process for epitaxial silicon emitters via Hot Wire CVD. PV-SAT 14, Imperial College London, United Kingdom. 18 - 20 Apr 2018.

Tyson, Jack James, Rahman, Tasmiat and Boden, Stuart (2019) Optical simulation of black silicon surfaces using geometric randomisation and unit-cell based averaging. The 15th Photovoltaic Science, Applications and Technology Conference<br/>, University of Warwick, United Kingdom. 10 - 12 Apr 2019. 4 pp .

Tyson, Jack James, Rahman, Tasmiat and Boden, Stuart (2019) Multiphysics simulations for robust computational modelling of stochastic nanostructures. 2019 COMSOL Conference, United Kingdom. 24 - 26 Sep 2019.

Scheul, Tudor, Emilian, Khorani, Edris, Rahman, Tasmiat and Boden, Stuart (2019) Characterization of atomic layer deposited alumina thin films on black silicon textures using helium ion microscopy. In AIP Conference Proceedings. vol. 2147, AIP Publishing. 6 pp . (doi:10.1063/1.5123858).

Tyson, Jack James, Rahman, Tasmiat and Boden, Stuart (2020) Angular-resolved hemispherical reflectometry for the optical characterisation of material surfaces. The 16th Photovoltaic Science, Application and Technology Conference, , Salford, United Kingdom. (In Press)

Tyson, Jack, James, Rahman, Tasmiat and Boden, Stuart (2020) Ray tracing coupled with electromagnetic wave optics for nanoscale light propagation studies. 2020 COMSOL Conference, France. 14 - 15 Oct 2020. (Submitted)

Tyson, Jack James, Rahman, Tasmiat and Boden, Stuart (2020) A new mathematical interpretation of disordered nanoscale material systems for computational modelling. Computer Physics Communications, 255, 1-15, [107399]. (doi:10.1016/j.cpc.2020.107399).

Scheul, Tudor Emilian, Khorani, Edris, Rahman, Tasmiat, Charlton, Martin and Boden, Stuart (2020) Wavelength and angle resolved reflectance measurements of pyramidal textures for crystalline silicon photovoltaics. Progress in Photovoltaics: Research and Applications. (doi:10.1002/pip.3319).

Pi, Hailong, Rahman, Tasmiat, Boden, Stuart A., Ma, Tianjun, Yan, Jize and Fang, Xu (2020) Integrated vortex beam emitter in the THz frequency range: design and simulation. APL Photonics. (In Press)

Khorani, Edris, McNab, Shona, Scheul, Tudor Emilian, Rahman, Tasmiat, Bonilla, Ruy Sebastian, Boden, Stuart and Wilshaw, Peter (2020) Optoelectronic properties of ultrathin ALD silicon nitride and its potential as a hole-selective nanolayer for high efficiency solar cells. APL Materials, 8 (11), [111106]. (doi:10.1063/5.0023336).

Mercier, Thomas M., Krishnan, Chirenjeevi, Rahman, Tasmiat, Shaw, Peter J., Lagoudakis, Pavlos G. and Charlton, Martin D.B. (2020) FDTD study of anti-reflective properties of photonic crystal slabs in silicon. Freundlich, Alexandre, Sugiyama, Masakazu and Collin, Stephane (eds.) In Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX. vol. 11275, SPIE.. (doi:10.1117/12.2544226).

Krishnan, Chirenjeevi, Mercier, Thomas, Rahman, Tasmiat, Piana, Giacomo, Brossard, Mael, Yagafarov, Timur, To, Alexander, Pollard, Michael E., Shaw, Peter, Bagnall, Darren M., Hoex, Bram, Boden, Stuart A., Lagoudakis, Pavlos G., Charlton, Martin D. B., Shaw, Peter and Shaw, Peter (2019) Efficient light harvesting in hybrid quantum dot-interdigitated back contact solar cells via resonant energy transfer and luminescent downshifting. Nanoscale, 11 (40), 18837-18844. (doi:10.1039/c9nr04003j).

Mercier, Thomas (2021) Data And Code For PhD Thesis Hybrid Solar Cells and Hybrid LEDs utilising Photonic Quasi Crystals and Colloidal Quantum Dots. University of Southampton doi:10.5258/SOTON/D1852 [Dataset]


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