Department of Physics



Office: 3W2.2B
Tel: +44 (0) 1225 383322 


Prof Alison Walker


Research Interests

A full description of my research interests is given on my personal web pages.

They are in the following areas organic light emitting diodes and photovoltaic devices and novel solar photovoltaic cells.

I am Coordinator of the Marie Curie Initial Training Network Destiny: DyE SensiTIzed solar cells with eNhanced stabilitY

I lead the Bath node of the Supersolar hub funded by the UK Engineering and Physical Sciences Research Council.


Johnson, A., Pering, S., Deng, W., Troughton, J. R., Kubiak, P., Ghosh, D., Niemann, R., Brivio, F., Jeffrey, F., Walker, A., Islam, M., Watson, T., Raithby, P., Lewis, S. and Cameron, P., 2017. Azetidinium lead iodide for perovskite solar cells. Journal of Materials Chemistry A

O'Kane, S. E. J., Richardson, G., Pockett, A., Niemann, R. G., Cave, J. M., Sakai, N., Eperon, G. E., Snaith, H. J., Foster, J. M., Cameron, P. J. and Walker, A. B., 2017. Measurement and modelling of dark current decay transients in perovskite solar cells. Journal of Materials Chemistry C, 2017 (5), pp. 452-462.

O'Kane, S., Foster, J., Cave, J., Courtier, N., Richardson, G. and Walker, A., 2016. Modelling ion motion in perovskite films. In: 2nd International Conference on Perovskite Solar Cells and Optoelectronics, 2016-09-26 - 2016-09-28, Palazzo Ducale.

Feron, K., Cave, J. M., Thameel, M. N., O'Sullivan, C., Kroon, R., Andersson, M. R., Zhou, X., Fell, C. J., Belcher, W. J., Walker, A. B. and Dastoor, P. C., 2016. Utilizing energy transfer in binary and ternary bulk heterojunction organic solar cells. ACS Applied Materials and Interfaces, 8 (32), pp. 20928-20937.

O'Kane, S., Richardson, G., Pockett, A., Foster, J., Sakai, N., Eperon, G., Snaith, H. and Walker, A., 2016. Modelling Temperature Dependence of Hysteresis in Perovskite Solar Cells. In: 8th International Conference on Hybrid and Organic Photovoltaics, 2016-06-28 - 2016-07-01, Swansea University Bay Campus.

Walker, A., 2016. Why you should get ready to say goodbye to the humble lightbulb. [Non-academic press]

Richardson, G., O'Kane, S., Niemann, R., Peltola, T., Foster, J., Cameron, P. and Walker, A., 2016. Can slow-moving ions explain hysteresis in the current–voltage curves of perovskite solar cells? Energy & Environmental Science

O'Kane, S., Richardson, G., Niemann, R., Foster, J., Cameron, P. and Walker, A., 2015. Parametric study of perovskite solar cells using drift-diffusion modelling. In: 1st International Conference on Perovskite Solar Cells and Photovoltaics, 2015-09-27 - 2016-11-29, École polytechnique fédérale de Lausanne.

O'Kane, S., Peltola, T., Foster, J., Richardson, G. and Walker, A., 2015. Time-Dependent Drift-Diffusion Modelling of Perovskite Solar Cells with Moving Ions. In: The 7th International Conference on Hybrid and Organic Photovoltaics, 2015-05-10 - 2015-05-13.

Pockett, A., Eperon, G., Peltola, T., Snaith, H., Walker, A., Peter, L. and Cameron, P., 2015. Characterization of Planar Lead Halide Perovskite Solar Cells by Impedance Spectroscopy, Open-Circuit Photovoltage Decay, and Intensity-Modulated Photovoltage/Photocurrent Spectroscopy. Journal of Physical Chemistry C, 119 (7), pp. 3456-3465.

Bailey, J., Wright, E.N., Wang, X., Walker, A.B., Bradley, D.D.C. and Kim, J.-S., 2014. Understanding the role of ultra-thin polymeric interlayers in improving efficiency of polymer light emitting diodes. Journal of Applied Physics, 115 (20), 204508.

Abate, A., Staff, D. R., Hollman, D. J., Snaith, H. J. and Walker, A. B., 2014. Influence of ionizing dopants on charge transport in organic semiconductors. Physical Chemistry Chemical Physics, 16 (3), pp. 1132-1138.

Walker, A.B., 2014. Monte Carlo studies of electronic processes in dye-sensitized solar cells. In: Topics in Current Chemistry.Vol. 352. Springer, pp. 237-256.

Brivio, F., Walker, A. B. and Walsh, A., 2013. Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principles. APL Materials, 1 (4), 042111.

Kimber, R.G.E., Wright, E.N., O'Kane, S.E.J., Walker, A.B. and Blakesley, J.C., 2012. Mesoscopic kinetic Monte Carlo modeling of organic photovoltaic device characteristics. Physical Review B, 86 (23), 235206.

Dunn, H.K., Peter, L.M., Bingham, S.J., Maluta, E. and Walker, A.B., 2012. In situ detection of free and trapped electrons in dye-sensitized solar cells by photo-induced microwave reflectance measurements. Journal of Physical Chemistry C, 116 (41), pp. 22063-22072.

Dunn, H. K., Westin, P.-O., Staff, D. R., Peter, L. M., Walker, A. B., Boschloo, G. and Hagfeldt, A., 2011. Determination of the electron diffusion length in dye-sensitized solar cells by substrate contact patterning. Journal of Physical Chemistry C, 115 (28), pp. 13932-13937.

Papadopoulos, T. A., Muccioli, L., Athanasopoulos, S., Walker, A. B., Zannoni, C. and Beljonne, D., 2011. Does supramolecular ordering influence exciton transport in conjugated systems? Insight from atomistic simulations. Chemical Science, 2 (6), pp. 1025-1032.

Peic, A., Staff, D., Risbridger, T., Menges, B., Peter, L. M., Walker, A. B. and Cameron, P. J., 2011. Real-time optical waveguide measurements of dye adsorption into nanocrystalline TiO2 films with relevance to dye-sensitized solar cells. Journal of Physical Chemistry C, 115 (3), pp. 613-619.

Groves, C., Kimber, R. G. E. and Walker, A. B., 2010. Simulation of loss mechanisms in organic solar cells: a description of the mesoscopic Monte Carlo technique and an evaluation of the first reaction method. Journal of Chemical Physics, 133 (14), 144110.

Stevenson, S. G., Samuel, I. D. W., Staton, S. V., Knights, K. A., Burn, P. L., Williams, J. H. T. and Walker, A. B., 2010. Current-voltage characteristics of dendrimer light-emitting diodes. Journal of Physics D: Applied Physics, 43 (38), 385106.

Kimber, R. G. E., Walker, A. B., Schroder-Turk, G. E. and Cleaver, D. J., 2010. Bicontinuous minimal surface nanostructures for polymer blend solar cells. Physical Chemistry Chemical Physics, 12 (4), pp. 844-851.

Meng, L. Y., Shang, Y., Li, Q. K., Li, Y. F., Zhan, X. W., Shuai, Z. G., Kimber, R. G. E. and Walker, A. B., 2010. Dynamic Monte Carlo simulation for highly efficient polymer blend photovoltaics. Journal of Physical Chemistry B, 114 (1), pp. 36-41.

Athanasopoulos, S., Emelianova, E. V., Walker, A. B. and Beljonne, D., 2010. Modelling exciton diffusion in disordered conjugated polymers. Proceedings of SPIE - The International Society for Optical Engineering, 7722, 772214.

Athanasopoulos, S., Emelianova, E. V., Walker, A. B. and Beljonne, D., 2009. Exciton diffusion in energetically disordered organic materials. Physical Review B, 80 (19), 195209.

Walker, A. B., 2009. Multiscale Modeling of Charge and Energy Transport in Organic Light-Emitting Diodes and Photovoltaics. Proceedings of the IEEE, 97 (9), pp. 1587-1596.

Jennings, J. R., Ghicov, A., Peter, L. M., Schmuki, P. and Walker, A. B., 2008. Dye-sensitized solar cells based on oriented TiO2 nanotube arrays: transport, trapping, and transfer of electrons. Journal of the American Chemical Society, 130 (40), pp. 13364-13372.

Athanasopoulos, S., Hennebicq, E., Beljonne, D. and Walker, A., 2008. Trap limited exciton transport in conjugated polymers. Journal of Physical Chemistry C, 112 (30), pp. 11532-11538.

Williams, J. and Walker, A., 2008. Two-dimensional simulations of bulk heterojunction solar cell characteristics. Nanotechnology, 19 (42), p. 424011.

This list was generated on Mon Oct 16 11:26:56 2017 IST.

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