By Dr Phillip George Hamer

Book Chapters

Wang L; Hamer P; Pollard M; Chan C, 2024, 'Experimental Demonstration on Suppression of LeTID in P-type Multi-Crystalline PERC Silicon Solar Cells by Biased Annealing Process', in Current Research Progress in Physical Science Vol. 1, B P International, pp. 148 - 163, http://dx.doi.org/10.9734/bpi/crpps/v1/8188e

Hamer P; Sun C; Hallam B, 2021, 'Hydrogen passivation mechanisms', in Hydrogen Passivation and Laser Doping for Silicon Solar Cells, pp. 25 - 74

Journal articles

Poddar S; Liu S; Hamer P; Kay M; Hoex B, 2026, 'Closing the UV-Induced Photodegradation Gap Through Global Scale Modeling of Fixed Tilt and Tracking Photovoltaic Systems', IEEE Journal of Photovoltaics, 16, pp. 494 - 503, http://dx.doi.org/10.1109/JPHOTOV.2026.3668778

Hamer P; Huang C; Chen D; Lennon A; Hoex B, 2026, 'The intrinsic adjusted single-diode model: Solid State Physics meets accurate yield simulation', Solar Energy Materials and Solar Cells, 300, http://dx.doi.org/10.1016/j.solmat.2026.114218

Haydous Z; Cavieres Abarca R; Hamer P; Chang N; Valencia F; Hoex B, 2026, 'Thermal-Aware Tracking for Photovoltaics: Reducing Module Degradation Without Sacrificing Yield', IEEE Journal of Photovoltaics, 16, pp. 250 - 256, http://dx.doi.org/10.1109/JPHOTOV.2026.3654124

Liu D; Wright M; Altermatt PP; Wright B; Hamer P; Bonilla RS, 2025, 'The impact of surface polarisation on the degradation of tunnel oxide passivating contacts in silicon solar cells', Solar Energy Materials and Solar Cells, 282, http://dx.doi.org/10.1016/j.solmat.2024.113340

Schön J; Hamer P; Hammann B; Zechner C; Kwapil W; Schubert MC, 2025, 'Hydrogen in Silicon Solar Cells: The Role of Diffusion', Solar Rrl, 9, http://dx.doi.org/10.1002/solr.202400668

Bonilla RS; Al-Dhahir I; Niu X; Altermatt PP; Hamer P, 2024, 'Enhancing dielectric-silicon interfaces through surface electric fields during firing', Solar Energy Materials and Solar Cells, 269, http://dx.doi.org/10.1016/j.solmat.2024.112799

Sun Z; Wang L; Luo H; Hamer P; Ye H; Hallam B, 2023, 'Study of the Hydrogen Passivation Effect of Low-Temperature-Deposited Amorphous Silicon Layers on SiGe Solar Cells Grown on a Silicon Substrate', ACS Applied Energy Materials, 6, pp. 12064 - 12071, http://dx.doi.org/10.1021/acsaem.3c02283

Fischer C; Schmid A; Herguth A; Zuschlag A; Altermatt PP; Hamer P; Hahn G, 2023, 'Influence of highly doped layers on hydrogen in-diffusion into crystalline silicon', Solar Energy Materials and Solar Cells, 250, http://dx.doi.org/10.1016/j.solmat.2022.112056

Liu D; Wright M; Goodarzi M; Wilshaw PR; Hamer P; Bonilla RS, 2022, 'Observations of contact resistance in TOPCon and PERC solar cells', Solar Energy Materials and Solar Cells, 246, http://dx.doi.org/10.1016/j.solmat.2022.111934

Sen C; Hamer P; Soeriyadi A; Wright B; Wright M; Samadi A; Chen D; Stefani BV; Zhang D; Wu J; Jiang F; Hallam B; Abbott M, 2022, 'Impact of surface doping profile and passivation layers on surface-related degradation in silicon PERC solar cells', Solar Energy Materials and Solar Cells, 235, http://dx.doi.org/10.1016/j.solmat.2021.111497

Yu M; Shi Y; Deru J; Al-Dhahir I; McNab S; Chen D; Voss M; Hwu ET; Ciesla A; Hallam B; Hamer P; Altermatt PP; Wilshaw P; Bonilla RS, 2021, 'Assessing the Potential of Inversion Layer Solar Cells Based on Highly Charged Dielectric Nanolayers', Physica Status Solidi Rapid Research Letters, 15, http://dx.doi.org/10.1002/pssr.202100129

Tweddle D; Hamer P; Shen Z; Markevich VP; Moody MP; Wilshaw PR, 2021, 'Direct observation of hydrogen at defects in multicrystalline silicon', Progress in Photovoltaics Research and Applications, 29, pp. 1158 - 1164, http://dx.doi.org/10.1002/pip.3184

Chen D; Vaqueiro Contreras M; Ciesla A; Hamer P; Hallam B; Abbott M; Chan C, 2021, 'Progress in the understanding of light- and elevated temperature-induced degradation in silicon solar cells: A review', Progress in Photovoltaics Research and Applications, 29, pp. 1180 - 1201, http://dx.doi.org/10.1002/pip.3362

Hamer P; Chen D; Bonilla R, 2021, 'Thermal Processes and their Impact on Surface Related Degradation', Physica Status Solidi: Rapid Research Letters, 16, http://dx.doi.org/10.1002/pssr.202100464

Varshney U; Kim M; Khan MU; Hamer P; Chan C; Abbott M; Hoex B, 2021, 'Impact of Substrate Thickness on the Degradation in Multicrystalline Silicon', IEEE Journal of Photovoltaics, 11, pp. 65 - 72, http://dx.doi.org/10.1109/JPHOTOV.2020.3038412

Hallam BJ; Hamer PG; Ciesla née Wenham AM; Chan CE; Vicari Stefani B; Wenham S, 2020, 'Development of advanced hydrogenation processes for silicon solar cells via an improved understanding of the behaviour of hydrogen in silicon', Progress in Photovoltaics Research and Applications, 28, pp. 1217 - 1238, http://dx.doi.org/10.1002/pip.3240

Yu M; Zhou R; Hamer P; Chen D; Zhang X; Altermatt PP; Wilshaw PR; Bonilla RS, 2020, 'Imaging and quantifying carrier collection in silicon solar cells: A submicron study using electron beam induced current', Solar Energy, 211, pp. 1214 - 1222, http://dx.doi.org/10.1016/j.solener.2020.10.038

Bonilla RS; Al-Dhahir I; Yu M; Hamer P; Altermatt PP, 2020, 'Charge fluctuations at the Si–SiO2 interface and its effect on surface recombination in solar cells', Solar Energy Materials and Solar Cells, 215, http://dx.doi.org/10.1016/j.solmat.2020.110649

Sen C; Chan C; Hamer P; Wright M; Chong CM; Hallam B; Abbott M, 2020, 'Eliminating light- and elevated temperature-induced degradation in P-type PERC solar cells by a two-step thermal process', Solar Energy Materials and Solar Cells, 209, http://dx.doi.org/10.1016/j.solmat.2020.110470

Tweddle D; Hamer P; Shen Z; Heinz FD; Krenckel P; Riepe S; Schindler F; Wilshaw PR; Moody MP, 2020, 'Atom Probe Tomography Study of Gettering in High-Performance Multicrystalline Silicon', IEEE Journal of Photovoltaics, 10, pp. 863 - 871, http://dx.doi.org/10.1109/JPHOTOV.2020.2974795

Chen D; Hamer P; Kim M; Chan C; Ciesla nee Wenham A; Rougieux F; Zhang Y; Abbott M; Hallam B, 2020, 'Hydrogen-induced degradation: Explaining the mechanism behind light- and elevated temperature-induced degradation in n- and p-type silicon', Solar Energy Materials and Solar Cells, 207, http://dx.doi.org/10.1016/j.solmat.2019.110353

Zhou R; Yu M; Tweddle D; Hamer P; Chen D; Hallam B; Ciesla A; Altermatt PP; Wilshaw PR; Bonilla RS, 2020, 'Understanding and optimizing EBIC pn-junction characterization from modeling insights', Journal of Applied Physics, 127, http://dx.doi.org/10.1063/1.5139894

Varshney U; Chan C; Hoex B; Hallam B; Hamer P; Ciesla A; Chen D; Liu S; Sen C; Samadi A; Abbott M, 2020, 'Controlling Light- And Elevated-Temperature-Induced Degradation with Thin Film Barrier Layers', IEEE Journal of Photovoltaics, 10, pp. 19 - 27, http://dx.doi.org/10.1109/JPHOTOV.2019.2945199

Sen C; Chan C; Hamer P; Wright M; Varshney U; Liu S; Chen D; Samadi A; Ciesla A; Chong CM; Hallam B; Abbott M, 2019, 'Annealing prior to contact firing: A potential new approach to suppress LeTID', Solar Energy Materials and Solar Cells, 200, http://dx.doi.org/10.1016/j.solmat.2019.109938

Tweddle D; Hamer P; Shen Z; Moody MP; Wilshaw PR, 2019, 'Identification of colloidal silica polishing induced contamination in silicon', Materials Characterization, 152, pp. 239 - 244, http://dx.doi.org/10.1016/j.matchar.2019.04.029

Kim K; Chen R; Chen D; Hamer P; Ciesla nee Wenham A; Wenham S; Hameiri Z, 2019, 'Degradation of surface passivation and bulk in p-type monocrystalline silicon wafers at elevated temperature', IEEE Journal of Photovoltaics, 9, pp. 97 - 97, http://dx.doi.org/10.1109/JPHOTOV.2018.2878791

Collett KA; Du S; Bourret-Sicotte G; Luo Z; Hamer P; Hallam B; Bonilla RS; Wilshaw PR, 2019, 'Scalable Techniques for Producing Field-Effect Passivation in High-Efficiency Silicon Solar Cells', IEEE Journal of Photovoltaics, 9, pp. 26 - 33, http://dx.doi.org/10.1109/JPHOTOV.2018.2872032

Hamer P; Chan C; Bonilla RS; Hallam B; Bourret-Sicotte G; Collett KA; Wenham S; Wilshaw PR, 2018, 'Hydrogen induced contact resistance in PERC solar cells', Solar Energy Materials and Solar Cells, 184, pp. 91 - 97, http://dx.doi.org/10.1016/j.solmat.2018.04.036

Chen D; Hamer P; Kim M; bourett-sicotte G; liu S; chan C; ciesla A; chen R; abbott M; hallam B; wenham S, 2018, 'Hydrogen induced degradation: A possible mechanism for light- and elevated temperature- induced degradation in n-type silicon', Solar Energy Materials and Solar Cells, 185, pp. 174 - 182, http://dx.doi.org/10.1016/j.solmat.2018.05.034

Hamer P; Hallam B; Bonilla RS; Altermatt PP; Wilshaw P; Wenham S, 2018, 'Modelling of hydrogen transport in silicon solar cell structures under equilibrium conditions', Journal of Applied Physics, 123, http://dx.doi.org/10.1063/1.5016854

Hallam B; Herguth A; Hamer P; Nampalli N; Wilking S; Abbott M; Wenham S; Hahn G, 2017, 'Eliminating light-induced degradation in commercial p-Type Czochralski silicon solar cells', Applied Sciences Switzerland, 8, pp. 10, http://dx.doi.org/10.3390/app8010010

Collett KA; Bonilla RS; Hamer P; Bourret-Sicotte G; Lobo R; Kho T; Wilshaw PR, 2017, 'An enhanced alneal process to produce SRV < 1 cm/s in 1 Ω cm n-type Si', Solar Energy Materials and Solar Cells, 173, pp. 50 - 58, http://dx.doi.org/10.1016/j.solmat.2017.06.022

Chan C; Hamer P; Bourret-Sicotte G; Chen R; Ciesla A; Hallam B; Payne D; Bonilla RS; Wenham S, 2017, 'Instability of Increased Contact Resistance in Silicon Solar Cells Following Post-Firing Thermal Processes', Solar Rrl, 1, http://dx.doi.org/10.1002/solr.201700129

Hallam BJ; Hamer PG; Bonilla RS; Wenham SR; Wilshaw PR, 2017, 'Method of Extracting Solar Cell Parameters from Derivatives of Dark I-V Curves', IEEE Journal of Photovoltaics, 7, pp. 1304 - 1312, http://dx.doi.org/10.1109/JPHOTOV.2017.2731778

Bonilla RS; Reichel C; Hermle M; Hamer P; Wilshaw PR, 2017, 'Long term stability of c-Si surface passivation using corona charged SiO 2', Applied Surface Science, 412, pp. 657 - 667, http://dx.doi.org/10.1016/j.apsusc.2017.03.204

Bonilla RS; Hoex B; Hamer P; Wilshaw PR, 2017, 'Dielectric surface passivation for silicon solar cells: A review', Physica Status Solidi A Applications and Materials Science, 214, http://dx.doi.org/10.1002/pssa.201700293

Bourret-Sicotte G; Hamer P; Bonilla RS; Collett K; Ciesla A; Colwell J; Wilshaw PR, 2017, 'Shielded hydrogen passivation − A potential in-line passivation process', Physica Status Solidi A Applications and Materials Science, 214, http://dx.doi.org/10.1002/pssa.201700383

Hamer P; Bourret-Sicotte G; Martins G; Wenham A; Bonilla RS; Wilshaw P, 2017, 'A novel source of atomic hydrogen for passivation of defects in silicon', Physica Status Solidi Rapid Research Letters, 11, http://dx.doi.org/10.1002/pssr.201600448

Kim M; Hamer P; Li H; Payne D; Wenham S; Abbott M; Hallam B, 2017, 'Impact of thermal processes on multi-crystalline silicon', Frontiers in Energy, 11, pp. 32 - 41, http://dx.doi.org/10.1007/s11708-016-0427-5

Hamer P; Bourret‐Sicotte G; Martins G; Wenham A; Bonilla RS; Wilshaw P, 2017, 'A novel source of atomic hydrogen for passivation of defects in silicon (Phys. Status Solidi RRL 5/2017)', physica status solidi (RRL) – Rapid Research Letters, 11, http://dx.doi.org/10.1002/pssr.201770327

Hamer P; Tweddle D; Martin T; Wilshaw P; Hiscock M; Lindsay J, 2017, 'EBIC-Enabled NanoManipulators - Investigating Dislocations in mc-Solar Cells', Microscopy and Microanalysis, 23, pp. 1426 - 1427, http://dx.doi.org/10.1017/s1431927617007796

Han J; Abbott MD; Hamer PG; Hoex B; Wang L; Lochtefeld A; Barnett AM, 2016, 'Ultrathin Silicon Solar Cell Loss Analysis', IEEE Journal of Photovoltaics, 6, pp. 1160 - 1166, http://dx.doi.org/10.1109/JPHOTOV.2016.2590949

Hallam B; Abbott M; Nampalli N; Hamer P; Wenham S, 2016, 'Influence of the formation-And passivation rate of boron-oxygen defects for mitigating carrier-induced degradation in silicon within a hydrogen-based model', Journal of Applied Physics, 119, http://dx.doi.org/10.1063/1.4941387

Hamer P; Hallam B; Abbott M; Chan C; Nampalli N; Wenham S, 2016, 'Investigations on accelerated processes for the boron-oxygen defect in p-type Czochralski silicon', Solar Energy Materials and Solar Cells, 145, pp. 440 - 446, http://dx.doi.org/10.1016/j.solmat.2015.11.013

Hallam BJ; Abbott MD; Nampalli N; Hamer PG; Wenham SR, 2016, 'Implications of accelerated recombination-active defect complex formation for mitigating carrier-induced degradation in silicon', IEEE Journal of Photovoltaics, 6, pp. 92 - 99, http://dx.doi.org/10.1109/JPHOTOV.2015.2494691

Hamer P; Hallam B; Abbott M; Wenham S, 2015, 'Accelerated formation of the boron-oxygen complex in p-type Czochralski silicon', Physica Status Solidi Rapid Research Letters, 9, pp. 297 - 300, http://dx.doi.org/10.1002/pssr.201510064

Hamer P; Wang S; Hallam B; Wenham S; Chong CM; Wenham A; Abbott M, 2015, 'Laser illumination for manipulation of hydrogen charge states in silicon solar cells', Physica Status Solidi Rapid Research Letters, 9, pp. 111 - 114, http://dx.doi.org/10.1002/pssr.201409495

Song L; Wenham A; Wang S; Hamer P; Ahmmed MS; Hallam B; Mai L; Abbott M; Hawkes ER; Chong C; Wenham S, 2015, 'Laser enhanced hydrogen passivation of silicon wafers', International Journal of Photoenergy, 2015, pp. 1 - 13, http://dx.doi.org/10.1155/2015/193892

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