Dr Jeff Kettle

Senior Lecturer (Electronic & Nanoscale Engineering)

Biography

I’ve been based in the James Watt School of Engineering since 2020. I studied at Cardiff and Swansea Universities, where I worked on III-V LEDs, and then worked in a variety of industrial and academic settings, before being made a lecturer at Bangor University in 2012. During my time as a lecturer, I acquired grant funding from the Royal Society, Royal Academy of Engineering, Interreg, Welsh Government, InnovateUK and European Commission, worth around £2m. I also have experience undertaking commercial work with a range of semiconductor, electronic and engineering companies, particular in areas related to failure analysis and reliability improvement. I have a lot of experience working in solar cell reliability as well as manufacturing large area electronic devices based upon organic and metal oxide materials.

Research interests

My current role is in ‘sustainable electronics,’ whereby I try to reduce the environmental impact of electronic and optoelectronic devices and systems through improving the long term stability, increasing recyclability, or reducing the electronic waste that they create. I also develop sensors and wireless sensors systems that enhance sustainability; for example, agri-tech sensors, monitoring of building usage, wearable sensors, and sensors that optimise manufacturing machine performance. I am also keen to work in an interdisciplinary fashion and have experience working with environmental scientists, biologists, medical professional as well as organic and inorganic chemists to produce functional devices with new materials

Publications

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Number of items: 65.

2021

David, T. W., Amorim Soares, G., Bristow, N., Bagnis, D. and Kettle, J. (2021) Predicting diurnal outdoor performance and degradation of organic photovoltaics via machine learning; relating degradation to outdoor stress conditions. Progress in Photovoltaics, (doi: 10.1002/pip.3453) (Early Online Publication)

Haponow, L., Kettle, J. and Allsop, J. (2021) Optimization of a continuous hot embossing process for fabrication of micropyramid structures in thermoplastic sheets. Journal of Vacuum Science and Technology B, 39(1), 012203. (doi: 10.1116/6.0000551)

David, T., Amorim, G., Bagnis, D., Bristow, N., Selbach, S. and Kettle, J. (2021) Forecasting OPV Outdoor Performance and Degradation Rates Using Machine Learning. In: 48th IEEE Photovoltaic Specialists Conference (PVSC-48), Miami, FL, USA, 20-25 June 2021, (Accepted for Publication)

2020

De Rossi, F. et al. (2020) An interlaboratory study on the stability of all‐printable hole transport material–free perovskite solar cells. Energy Technology, 8(12), 2000134. (doi: 10.1002/ente.202000134)

David, T. W., Anizelli, H., Jacobsson, T. J., Gray, C., Teahan, W. and Kettle, J. (2020) Enhancing the stability of organic photovoltaics through machine learning. Nano Energy, 78, 105342. (doi: 10.1016/j.nanoen.2020.105342)

Huang, H., Coote, T., Bristow, N., David, T. W., Kettle, J. and Todeschini, G. (2020) Development of an Improved Computer Model for Organic Photovoltaic Cells. In: 9th International Conference on Renewable Energy Research and Application (ICRERA 2020), Glasgow, UK, 27-30 Sep 2020, pp. 78-82. ISBN 9781728173696 (doi:10.1109/ICRERA49962.2020.9242779)

Vieira, D. H., Badiei, N., Evans, J. E., Alves, N., Kettle, J. and Li, L. (2020) Improvement of the deep UV sensor performance of a β-Ga2O3 photodiode by coupling of two planar diodes. IEEE Transactions on Electron Devices, 67(11), pp. 4947-4952. (doi: 10.1109/TED.2020.3022341)

Bristow, N., Elliott, F., O'Mahony, J., Kartopu, G., Oklobia, O., Irvine, S. and Kettle, J. (2020) Development of a Wireless Sensor Node for Building Information Management Systems. In: 2020 IEEE 6th World Forum on Internet of Things (WF-IoT), New Orleans, LA, USA, 2-16 June 2020, ISBN 9781728155043 (doi:10.1109/WF-IoT48130.2020.9221255)

Aghaei, M., Kettle, J. and Reinders, A.H.M.E. (2020) Reliability and Durability Research Activities of PV Modules, Components and Systems in Cost Action Pearl PV. In: 30th International Photovoltaic Science and Engineering Conference (PVSEC-30) & Global Photovoltaic Conference 2020 (GPVC 2020), Jeju, Republic of Korea, 8-13 Nov 2020, (Accepted for Publication)

Menéndez, M.F., Martinez, A., Sánchez, P., Gomez, D., Andrés, L.J., Haponow, L., Bristow, N., Kettle, J., Korochkina, T. and Gethin, D.T. (2020) Development of intermediate layer systems for direct deposition of thin film solar cells onto low cost steel substrates. Solar Energy, 208, pp. 738-746. (doi: 10.1016/j.solener.2020.08.046)

Kumar, D., Gomes, T. C., Alves, N., Fugikawa-Santos, L., Smith, G. C. and Kettle, J. (2020) UV phototransistors-based upon spray coated and sputter deposited ZnO TFTs. IEEE Sensors Journal, 20(14), pp. 7532-7539. (doi: 10.1109/JSEN.2020.2983418)

Anizelli, H., David, T. W., Tyagi, P., Laureto, E. and Kettle, J. (2020) Enhancing the stability of perovskite solar cells through functionalisation of metal oxide transport layers with self-assembled monolayers. Solar Energy, 203, pp. 157-163. (doi: 10.1016/j.solener.2020.04.035)

Khenkin, M. V. et al. (2020) Consensus statement for stability assessment and reporting for perovskite photovoltaics based on ISOS procedures. Nature Energy, 5, pp. 35-49. (doi: 10.1038/s41560-019-0529-5)

Soares, G.A. et al. (2020) Outdoor performance of organic photovoltaics at two different locations: a comparison of degradation and the effect of condensation. Journal of Renewable and Sustainable Energy, 12(6), 063502. (doi: 10.1063/5.0025622)

Vieira, D. H., Badiei, N., Evans, J. E., Alves, N., Kettle, J. and Li, L. (2020) Electrical Characterisation of β-Ga2O3 Schottky Diode for Deep UV Sensor Applications. In: IEEE Sensors 2020, 25-28 Oct 2020, ISBN 9781728168012 (doi:10.1109/SENSORS47125.2020.9278829)

2019

Tyagi, P., David, T. W., Stoichkov, V. D. and Kettle, J. (2019) Multivariate approach for studying the degradation of perovskite solar cells. Solar Energy, 193, pp. 12-19. (doi: 10.1016/j.solener.2019.09.054)

David, T. W., Anizelli, H., Tyagi, P., Gray, C., Teahan, W. and Kettle, J. (2019) Using large datasets of organic photovoltaic performance data to elucidate trends in reliability between 2009 and 2019. IEEE Journal of Photovoltaics, 9(6), pp. 1768-1773. (doi: 10.1109/JPHOTOV.2019.2939070)

Kumar, D. and Kettle, J. (2019) High performing metal–oxide semiconductor thin-film transistors. In: Dhiman, R. and Chandel, R. (eds.) VLSI and Post-CMOS Electronics. Volume 1: Design, Modelling and Simulation. IET. ISBN 9781839530524 (doi:10.1049/PBCS073F)

Gomes, T. C., Kumar, D., Fugikawa-Santos, L., Alves, N. and Kettle, J. (2019) Optimization of the anodization processing for aluminum oxide gate dielectrics in ZnO thin film transistors by multivariate analysis. ACS Combinatorial Science, 21(5), pp. 370-379. (doi: 10.1021/acscombsci.8b00195) (PMID:30892872)

Stoichkov, V., Sweet, T.K.N., Jenkins, N. and Kettle, J. (2019) Studying the outdoor performance of organic building-integrated photovoltaics laminated to the cladding of a building prototype. Solar Energy Materials and Solar Cells, 191, pp. 356-364. (doi: 10.1016/j.solmat.2018.11.040)

Fernandez, B., Lobo, L., Tyagi, P., Stoichkov, V., Kettle, J. and Pereiro, R. (2019) Rapid evaluation of different perovskite absorber layers through the application of depth profile analysis using glow discharge – Time of flight mass spectrometry. Talanta, 192, pp. 317-324. (doi: 10.1016/j.talanta.2018.09.059) (PMID:30348396)

Kettle, J. (2019) Ready cells for large-scale systems. Nature Energy, 4, pp. 536-537. (doi: 10.1038/s41560-019-0422-2)

Kumar, D., Stoichkov, V., Brousseau, E., Smith, G. C. and Kettle, J. (2019) High performing AgNW transparent conducting electrodes with a sheet resistance of 2.5 Ω Sq−1 based upon a roll-to-roll compatible post-processing technique. Nanoscale, 11(12), pp. 5760-5769. (doi: 10.1039/C8NR07974A) (PMID:30775736)

2018

Hughes, L., Bristow, N., Korochkina, T., Sanchez, P., Gomez, D., Kettle, J. and Gethin, D. (2018) Assessing the potential of steel as a substrate for building integrated photovoltaic applications. Applied Energy, 229, pp. 209-223. (doi: 10.1016/j.apenergy.2018.07.119)

Fernandes, R. V., Urbano, A., Duarte, J. L., Bristow, N., Kettle, J. and Laureto, E. (2018) Tuning the optical properties of luminescent down shifting layers based on organic dyes to increase the efficiency and lifetime of P3HT: PCBM photovoltaic devices. Journal of Luminescence, 203, pp. 165-171. (doi: 10.1016/j.jlumin.2018.06.053)

Stoichkov, V., Bristow, N., Troughton, J., De Rossi, F., Watson, T.M. and Kettle, J. (2018) Outdoor performance monitoring of perovskite solar cell mini-modules: diurnal performance, observance of reversible degradation and variation with climatic performance. Solar Energy, 170, pp. 549-556. (doi: 10.1016/j.solener.2018.05.086)

Stoichkov, V., Kumar, D., Tyagi, P. and Kettle, J. (2018) Multistress testing of OPV modules for accurate predictive aging and reliability predictions. IEEE Journal of Photovoltaics, 8(4), pp. 1058-1065. (doi: 10.1109/JPHOTOV.2018.2838438)

Tyagi, P., Hua, S.-C., Amorim, D. R., Faria, R.M., Kettle, J. and Horie, M. (2018) All-conjugated block copolymers for efficient and stable organic solar cells with low temperature processing. Organic Electronics, 55, pp. 146-156. (doi: 10.1016/j.orgel.2018.01.032)

Bristow, N. and Kettle, J. (2018) Outdoor organic photovoltaic module characteristics: benchmarking against other PV technologies for performance, calculation of Ross coefficient and outdoor stability monitoring. Solar Energy Materials and Solar Cells, 175, pp. 52-59. (doi: 10.1016/j.solmat.2017.10.008)

Melvin, A. A., Stoichkov, V. D., Kettle, J., Mogilyansky, D., Katz, E. A. and Visoly-Fisher, I. (2018) Lead iodide as a buffer layer in UV-induced degradation of CH3NH3PbI3 films. Solar Energy, 159, pp. 794-799. (doi: 10.1016/j.solener.2017.11.054)

Kumar, D., Gomes, T., Alves, N. and Kettle, J. (2018) Understanding UV Sensor Performance in ZnO TFTs through the Application of Multivariate Analysis. In: IEEE Sensors 2018 Conference, New Delhi, India, 28-31 Oct 2018, ISBN 9781538647073 (doi:10.1109/ICSENS.2018.8630303)

2017

Anizelli, H. S., Stoichkov, V., Fernandes, R. V., Duarte, J. L., Laureto, E., Kettle, J., Visoly-Fisher, I. and Katz, E. A. (2017) Application of luminescence downshifting materials for enhanced stability of CH3NH3PbI3(1-x)Cl3x perovskite photovoltaic devices. Organic Electronics, 49, pp. 129-134. (doi: 10.1016/j.orgel.2017.06.056)

Kettle, J., Stoichkov, V., Kumar, D., Corazza, M., Gevorgyan, S.A. and Krebs, F.C. (2017) Using ISOS consensus test protocols for development of quantitative life test models in ageing of organic solar cells. Solar Energy Materials and Solar Cells, 167, pp. 53-59. (doi: 10.1016/j.solmat.2017.04.005)

Fernandes, R. V., Bristow, N., Stoichkov, V., Anizelli, H. S., Duarte, J. L., Laureto, E. and Kettle, J. (2017) Development of multidye UV filters for OPVs using luminescent materials. Journal of Physics D: Applied Physics, 50, 025103. (doi: 10.1088/1361-6463/50/2/025103)

Kumar, D., Stoichkov, V., Ghosh, S., Smith, G.C. and Kettle, J. (2017) Mixed-dimension silver nanowires for solution-processed, flexible, transparent and conducting electrodes with improved optical and physical properties. Flexible and Printed Electronics, 2, 015005. (doi: 10.1088/2058-8585/aa6011)

2016

Ding, Z., Stoichkov, V., Horie, M., Brousseau, E. and Kettle, J. (2016) Spray coated silver nanowires as transparent electrodes in OPVs for Building Integrated Photovoltaics applications. Solar Energy Materials and Solar Cells, 157, pp. 305-311. (doi: 10.1016/j.solmat.2016.05.053)

Kettle, J., Ding, Z., Horie, M. and Smith, G.C. (2016) XPS analysis of the chemical degradation of PTB7 polymers for organic photovoltaics. Organic Electronics, 39, pp. 222-228. (doi: 10.1016/j.orgel.2016.10.016)

Kettle, J., Bristow, N., Gethin, D.T., Tehrani, Z., Moudam, O., Li, B., Katz, E.A., dos Reis Benatto, G.A. and Krebs, F.C. (2016) Printable luminescent down shifter for enhancing efficiency and stability of organic photovoltaics. Solar Energy Materials and Solar Cells, 144, pp. 481-487. (doi: 10.1016/j.solmat.2015.09.037)

Ding, Z., Kettle, J., Horie, M., Chang, S. W., Smith, G. C., Shames, A. I. and Katz, E. A. (2016) Efficient solar cells are more stable: the impact of polymer molecular weight on performance of organic photovoltaics. Journal of Materials Chemistry A, 4(19), pp. 7274-7280. (doi: 10.1039/C6TA00721J)

Kettle, J., Waters, H., Horie, M. and Smith, G.C. (2016) Alternative selection of processing additives to enhance the lifetime of OPVs. Journal of Physics D: Applied Physics, 49(8), 085601. (doi: 10.1088/0022-3727/49/8/085601)

2015

Tehrani, Z., Korochkina, T., Govindarajan, S., Thomas, D.J., O’Mahony, J., Kettle, J., Claypole, T.C. and Gethin, D.T. (2015) Ultra-thin flexible screen printed rechargeable polymer battery for wearable electronic applications. Organic Electronics, 26, pp. 386-394. (doi: 10.1016/j.orgel.2015.08.007)

Kettle, J., Chang, S.-W. and Horie, M. (2015) Fabrication and characterisation of hybrid photodiodes based on PCPDTBT–ZnO active layers. Microelectronic Engineering, 146, pp. 105-108. (doi: 10.1016/j.mee.2015.05.006)

Kettle, J., Waters, H., Ding, Z., Horie, M. and Smith, G.C. (2015) Chemical changes in PCPDTBT:PCBM solar cells using XPS and TOF-SIMS and use of inverted device structure for improving lifetime performance. Solar Energy Materials and Solar Cells, 141, pp. 139-147. (doi: 10.1016/j.solmat.2015.05.016)

Kettle, J., Bristow, N., Sweet, T. K.N., Jenkins, N., dos Reis Benatto, G. A., Jørgensen, M. and Krebs, F. C. (2015) Three dimensional corrugated organic photovoltaics for building integration; improving the efficiency, oblique angle and diffuse performance of solar cells. Energy and Environmental Science, 8(11), pp. 3266-3273. (doi: 10.1039/C5EE02162F)

José Andrés, L., Fe Menéndez, M., Gómez, D., Luisa Martínez, A., Bristow, N., Kettle, J. P., Menéndez, A. and Ruiz, B. (2015) Rapid synthesis of ultra-long silver nanowires for tailor-made transparent conductive electrodes: proof of concept in organic solar cells. Nanotechnology, 26(26), 265201. (doi: 10.1088/0957-4484/26/26/265201)

Kettle, J., Chang, S.-W. and Horie, M. (2015) IR sensor based on low bandgap organic photodiode with up-converting phosphor. IEEE Sensors Journal, 15(6), pp. 3221-3224. (doi: 10.1109/JSEN.2015.2394744)

Bristow, N. and Kettle, J. (2015) Outdoor performance of organic photovoltaics: diurnal analysis, dependence on temperature, irradiance, and degradation. Journal of Renewable and Sustainable Energy, 7(1), 013111. (doi: 10.1063/1.4906915)

Chang, S.-W., Kettle, J., Waters, H. and Horie, M. (2015) Cyclopentadithiophene–benzothiadiazole copolymers with permutations of repeating unit length and ratios; synthesis, optical and electrochemical properties and photovoltaic characteristics. RSC Advances, 5(130), pp. 107276-107284. (doi: 10.1039/C5RA22946D)

Moudam, O., Bristow, N., Chang, S.-W., Horie, M. and Kettle, J. (2015) Application of UV-absorbing silver(i) luminescent down shifter for PTB7 organic solar cells for enhanced efficiency and stability. RSC Advances, 5(16), pp. 12397-12402. (doi: 10.1039/C4RA14794D)

2014

Madsen, M. V. et al. (2014) Worldwide outdoor round robin study of organic photovoltaic devices and modules. Solar Energy Materials and Solar Cells, 130, pp. 281-290. (doi: 10.1016/j.solmat.2014.07.021)

Waters, H., Bristow, N., Moudam, O., Chang, S.-W., Su, C.-J., Wu, W.-R., Jeng, U.-S., Horie, M. and Kettle, J. (2014) Effect of processing additive 1,8-octanedithiol on the lifetime of PCPDTBT based Organic Photovoltaics. Organic Electronics, 15(10), pp. 2433-2438. (doi: 10.1016/j.orgel.2014.06.031)

Li, C.-H., Kettle, J. and Horie, M. (2014) Cyclopentadithiophene–naphthalenediimide polymers; synthesis, characterisation, and n-type semiconducting properties in field-effect transistors and photovoltaic devices. Materials Chemistry and Physics, 144(3), pp. 519-528. (doi: 10.1016/j.matchemphys.2014.01.029)

Doggart, P., Bristow, N. and Kettle, J. (2014) Optimisation of the material properties of indium tin oxide layers for use in organic photovoltaics. Journal of Applied Physics, 116(10), 103103. (doi: 10.1063/1.4895552)

2013

Waters, H., Kettle, J., Chang, S.-W., Su, C.-J., Wu, W.-R., Jeng, U.-S., Tsai, Y.-C. and Horie, M. (2013) Organic photovoltaics based on a crosslinkable PCPDTBT analogue; synthesis, morphological studies, solar cell performance and enhanced lifetime. Journal of Materials Chemistry A, 1(25), pp. 7370-7378. (doi: 10.1039/C3TA11002H)

2012

Chang, S.-W., Waters, H., Kettle, J. and Horie, M. (2012) Cyclopentadithiophene–benzothiadiazole oligomers: synthesis via direct arylation, X-ray crystallography, optical properties, solution casted field-effect transistor and photovoltaic characteristics. Organic Electronics, 13(12), pp. 2967-2974. (doi: 10.1016/j.orgel.2012.08.023)

Horie, M., Kettle, J., Yu, C.-Y., Majewski, L. A., Chang, S.-W., Kirkpatrick, J., Tuladhar, S. M., Nelson, J., Saunders, B. R. and Turner, M. L. (2012) Cyclopentadithiophene-benzothiadiazole oligomers and polymers; synthesis, characterisation, field-effect transistor and photovoltaic characteristics. Journal of Materials Chemistry, 22(2), pp. 381-389. (doi: 10.1039/C1JM12449H)

2011

Kettle, J., Horie, M., Majewski, L.A., Saunders, B.R., Tuladhar, S., Nelson, J. and Turner, M.L. (2011) Optimisation of PCPDTBT solar cells using polymer synthesis with Suzuki coupling. Solar Energy Materials and Solar Cells, 95(8), pp. 2186-2193. (doi: 10.1016/j.solmat.2011.03.022)

2010

Sun, Y., Lu, X., Lin, S., Kettle, J., Yeates, S. G. and Song, A. (2010) Polythiophene-based field-effect transistors with enhanced air stability. Organic Electronics, 11(2), pp. 351-355. (doi: 10.1016/j.orgel.2009.10.019)

Kettle, J., Whitelegg, S., Song, A. M., Wedge, D. C., Kotacka, L., Kolarik, V., Madec, M. B., Yeates, S. G. and Turner, M. L. (2010) Fabrication of planar organic nanotransistors using low temperature thermal nanoimprint lithography for chemical sensor applications. Nanotechnology, 21(7), 075301. (doi: 10.1088/0957-4484/21/7/075301)

2009

Wedge, D. C., Das, A., Dost, R., Kettle, J., Madec, M.-B., Morrison, J. J., Grell, M., Kell, D. B., Richardson, T. H. and Yeates, S. (2009) Real-time vapour sensing using an OFET-based electronic nose and genetic programming. Sensors and Actuators B: Chemical, 143(1), pp. 365-372. (doi: 10.1016/j.snb.2009.09.030)

Kettle, J., Perks, R.M. and Hoyle, R.T. (2009) Fabrication of highly transparent self-switching diodes using single layer indium tin oxide. Electronics Letters, 45(1), pp. 79-81. (doi: 10.1049/el:20092309)

Kettle, J., Hoyle, R.T. and Dimov, S. (2009) Fabrication of Step-and-Flash Imprint Lithography (S-FIL) templates using XeF2 enhanced focused ion-beam etching. Applied Physics A, 96(4), pp. 819-825. (doi: 10.1007/s00339-009-5319-7)

Kettle, J., Whitelegg, S., Song, A. M., Madec, M. B., Yeates, S., Turner, M. L., Kotacka, L. and Kolarik, V. (2009) Fabrication of poly(3-hexylthiophene) self-switching diodes using thermal nanoimprint lithography and argon milling. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 27(6), pp. 2801-2804. (doi: 10.1116/1.3253606)

2008

Kettle, J., Hoyle, R.T., Dimov, S. and Perks, R.M. (2008) Fabrication of complex 3D structures using Step and Flash Imprint Lithography (S-FIL). Microelectronic Engineering, 85(5-6), pp. 853-855. (doi: 10.1016/j.mee.2007.12.003)

Kettle, J., Hoyle, R.T., Perks, R.M. and Dimov, S. (2008) Overcoming material challenges for replication of “motheye lenses” using step and flash imprint lithography for optoelectronic applications. Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures, 26(5), pp. 1794-1799. (doi: 10.1116/1.2981081)

This list was generated on Thu Sep 16 10:17:50 2021 BST.

Jump to: Articles | Book Sections | Conference Proceedings

Number of items: 65.

Articles

Kettle, J. (2019) Ready cells for large-scale systems. Nature Energy, 4, pp. 536-537. (doi: 10.1038/s41560-019-0422-2)

Book Sections

Conference Proceedings

This list was generated on Thu Sep 16 10:17:50 2021 BST.

Supervision

I am willing to take on PhD students in a number of areas of existing research strength and future research areas

- Improving the reliability of conventional electronics and optoelectronics;

- Material studies for large-area electronics, optoelectronics and solar cells (perovskite and organic solar cells);

- Packaging of electronic devices and electronics for harsh environments;

- New wireless sensor development for environmental and health monitoring;

- Applications of machine learning in sensors and renewable energy;

Teaching

I currently teach in semester 2 on "Electronic Engineering 1Y (1022)"

James Watt School of Engineering