University Crest and link to University of Sheffield home page.

Electronic and Photonic Molecular Materials Group

department of physics and astronomy

Dr David Mohamad

Photograph of David Mohamad working in the clean room.


David studied for a PhD in organic solar cells in the EPMM University of Sheffield between 2006 and 2010 where he investigated thin-film solar cells based on novel polymeric and molecular semiconductors, relating physical properties to device behaviour. After completing his PhD, David took on industry research and role at Cambridge Display Technology (CDT) focussed on the development of high-efficiency OLEDs for displays and lighting applications. In 2014, he returned to the EPMM group as a Research Associate in perovskite solar cells (PSCs). His research centres on evaluating the performance, and increasing the cell-active-area, of high performance spray-coated PSCs. This requires the application of ‘nozzleless’ ultrasonic spray-coating techniques to deposit functional films from solution.


Mohamad DK, Griffin J, Bracher C, Barrows AT, Lidzey DG. Spray-Cast Multilayer Organometal Perovskite Solar Cells Fabricated in Air. Adv. Energy Mater. 10.1002/aenm.201600994 (2016)

Bracher C, Freestone B, Mohamad D, Lidzey DG The operational stability of inverted architecture CH3NH3PbI3-xClx perovskite solar cells. Sol. Energ. Mat. Sol. Cells (submitted)

Mohamad DK, Freestone B, Masters R, Lidzey DG Spray-cast organometal halide perovskite solar cell efficiency enhanced by the addition of Hydrogen Iodide. (in preparation)

Nikolaenko AE, Cass M, Bourcet F, Mohamad D, Roberts M Thermally Activated Delayed Fluorescence in Polymers: a New Route Towards Highly Efficient Solution Processable OLEDs. Adv. Mater.,Nov. 2015;27(44);7236–40

Yan C, Cadby AJ, Parnell AJ, Tang W, Skoda MW; Mohamad D, King SP, Reynolds LX, Haque SA, Wang T, Parnell SR, Holmes AB, Jones RAL, Jones DJ Photophysics and morphology of a polyfluorene donor–acceptor triblock copolymer for solar cells. J. Polym. Sci. Part B Polym. Phys.,Dec. 2013;51(23);1705–18

Wilson RJ, Humphries MJ, Archer RA, Mohamad D; Foxon S, Hojas-Garcia E, King S; Kugler, Thomas; Baker, Colin; Conway, Natasha; Burroughes, Jeremy; Bidd, Ilesh P-128: Solution Processable Polymer OLED Lighting Panels with 25 lm/W Efficiency. SID Symposium Digest of Technical Papers. Jun. 20912;43(1);1535–7

Mohamad DK, Chauhan SS, Yi H, Cadby AJ, Lidzey DG, Iraqi A A regioregular head to tail thiophene based "double-cable" polymer with pendant anthraquinone functional groups: Preparation, spectroscopy and photovoltaic properties. Sol. Energ. Mat. Sol. Cells,Jan. 2011;95(7);1723–30

Mohamad DK, Fischereder A, Yi H, Cadby AJ, Lidzey DG, Iraqi A A novel 2,7-linked carbazole based "double cable" polymer with pendant perylene diimide functional groups: Preparation, spectroscopy and photovoltaic properties. J. of Mater. Chem.,Nov. 2010;21(3);851–62

Mohamad D, Johnson RG, Janeliunas D, Kirkus M, Yi H, Lidzey DG, Iraqi A Aryl amine substituted low energy gap carbazole polymers: preparation and photovoltaic properties. J. Mater. Chem.,Jul. 2010;20(33);6990–7

Yi H, Johnson RG, Iraqi A, Mohamad D, Royce R, Lidzey DG Narrow energy gap polymers with absorptions up to 1200nm and their photovoltaic properties. Macromol. Rapid Commun.,Oct 2008;29(22);1804–9

Link to top of page.
© EPMM members/University of Sheffield 2007-2014,
Website created by based on designs © University of Sheffield.