Research

organic electronic materials, supramolecular assembly, biomaterials, thermoelectric

Research Interests

Dr Fenwick received his BA and MSci degrees in Experimental and Theoretical Physics from Jesus College, University of Cambridge in 2002. After graduation he worked as a Systems Engineer at BAE SYSTEMS until joining University College London where he completed a PhD (2007) in near-field microscopy and lithography of organic semiconductors. He continued as a postdoctoral researcher at UCL focusing on the development of materials for organic light-emitting diodes (OLEDs) before moving to the Institut de Science et d'Ingénierie Supramoléculaires (I.S.I.S.) at the University of Strasbourg where he won a Marie Curie Intra-European Fellowship to study the functionalization of electrodes for organic field-effect transistors. 

Dr Fenwick started at Queen Mary in 2015 as a Royal Society University Research Fellow and is now Senior Lecturer in Materials Science where his research is focused on materials for organic thermoelectric devices.

Publications of specific relevance to Materials Research

Publications

2021

• Degousée T, Untilova V, Vijaykumar V, Xu X, Sun Y, Palma M, Brinkmann M, Biniek L and Fenwick O (2021). High thermal conductivity states and enhanced figure of merit in aligned polymer thermoelectric materials. Journal of Materials Chemistry A  10.1039/d1ta03377h
• Finn PA, Asker C, Wan K, Bilotti E, Fenwick O and Nielsen CB (2021). Thermoelectric Materials: Current Status and Future Challenges. Frontiers in Electronic Materials  vol. 1, 677845-677845. 10.3389/femat.2021.677845
• Vieira EMF, Silva JPB, Veltruská K, Istrate CM, Lenzi V, Trifiletti V, Lorenzi B, Matolín V, Ghica C, Marques L, Fenwick O and Goncalves LM (2021). All-Oxide p-n Junction Thermoelectric Generator Based on SnOx and ZnO Thin Films. Acs Appl Mater Interfaces  10.1021/acsami.1c09748
• Wan K, Liu Y, Santagiuliana G, Barandun G, Taroni Junior P, Güder F, Bastiaansen CWM, Baxendale M, Fenwick O, Papageorgiou DG, Krause S, Zhang H and Bilotti E (2021). Self-powered ultrasensitive and highly stretchable temperature–strain sensing composite yarns. Materials Horizons  10.1039/d1mh00908g
• Isotta E, Syafiq U, Ataollahi N, Chiappini A, Malerba C, Luong S, Trifiletti V, Fenwick O, Pugno NM and Scardi P (2021). Erratum: Thermoelectric properties of CZTS thin films: effect of Cu-Zn disorder (Physical Chemistry Chemical Physics (2021) DOI: 10.1039/d1cp01327k). Physical Chemistry Chemical Physics  vol. 23, (25) 14109-14109. 10.1039/d1cp90124a
• Isotta E, Syafiq U, Ataollahi N, Chiappini A, Malerba C, Luong S, Trifiletti V, Fenwick O, Pugno NM and Scardi P (2021). Thermoelectric properties of CZTS thin films: effect of Cu-Zn disorder. Phys Chem Chem Phys  10.1039/d1cp01327k
• Sun YW, Holec D, Gehringer D, Fenwick O, Dunstan DJ and Humphreys CJ (2021). Erratum: Unexpected softness of bilayer graphene and softening of A-A stacked graphene layers [Phys. Rev. B 101, 125421 (2020)]. Physical Review B  vol. 103, (11) 119901-119901. 10.1103/physrevb.103.119901
• RATNASINGHAM SR, Mohan L, Dabaczi M, Degousee T, Binions R, Fenwick O, Kim J-S, McLachlan M and Briscoe J (2021). Novel scalable aerosol-assisted CVD route for perovskite solar cells. Royal Society of Chemistry  Materials Advances  10.1039/D0MA00906G
• Decavoli C, Boldrini CL, Trifiletti V, Luong S, Fenwick O, Manfredi N and Abbotto A (2021). Dye-catalyst dyads for photoelectrochemical water oxidation based on metal-free sensitizers. Rsc Advances  vol. 11, (10) 5311-5319. 10.1039/d0ra10971a

2020

• TANG W, Zhang J, RATNASINGHAM SR, Liscio F, CHEN K, Liu T, Wan K, Suena Galindez E, Bilotti E, Reece M, Baxendale M, Milita S, McLachlan M, Su L and Fenwick O (2020). Substitutional doping of hybrid organic-inorganic perovskite crystals for thermoelectrics. Royal Society of Chemistry (Rsc)  Journal of Materials Chemistry A  10.1039/d0ta03648j
• Burton MR, Boyle CA, Liu T, McGettrick JD, Nandhakumar I, Fenwick O and Carnie M (2020). Full Thermoelectric Characterization of Stoichiometric Electrodeposited Thin Film Tin Selenide (SnSe). American Chemical Society  Acs Applied Materials and Interfaces  10.1021/acsami.0c06026
• Liu Z, Liu T, Savory CN, Jurado JP, Reparaz JS, Li J, Pan L, Faul CFJ, Parkin IP, Sankar G, Matsuishi S, Campoy-Quiles M, Scanlon DO, Zwijnenburg MA, Fenwick O and Schroeder BC (2020). Controlling the Thermoelectric Properties of Organometallic Coordination Polymers via Ligand Design. Advanced Functional Materials  10.1002/adfm.202003106
• Fenwick O, Coutiño¿Gonzalez E, Richard F, Bonacchi S, Baekelant W, Vos D, Roeffaers MBJ, Hofkens J and Samorì P (2020). X‐Ray‐Induced Growth Dynamics of Luminescent Silver Clusters in Zeolites. Wiley  Small  2002063-2002063. 10.1002/smll.202002063
• Liu T, Tang W, Luong S and Fenwick O (2020). High charge carrier mobility in solution processed one-dimensional lead halide perovskite single crystals and their application as photodetectors. Royal Society of Chemistry  Nanoscale  10.1039/d0nr01495h
• Trifiletti V, Tseberlidis G, Colombo M, Spinardi A, Luong S, Danilson M, Grossberg M, Fenwick O and Binetti S (2020). Growth and Characterization of Cu2Zn1-xFexSnS4 Thin Films for Photovoltaic Applications. Mdpi  Materials  vol. 13, 10.3390/ma13061471
• Sun Y, Holec D, Gehringer D, Fenwick O, Dunstan D and Humphreys C (2020). Unexpected softness of bilayer graphene and softening of A-A stacked graphene layers. American Physical Society  Physical Review B: Condensed Matter and Materials Physics  vol. 101, 10.1103/PhysRevB.101.125421
• Luo H, Dimitrov SD, Daboczi M, Kim J-S, Guo Q, Fang Y, Stoeckel M-A, Samorì P, Fenwick O, Jorge Sobrido A, Wang X and Titirici M-M (2020). Nitrogen-doped Carbon Dots/TiO2 Nanoparticle Composites for Photoelectrochemical Water Oxidation. American Chemical Society  Acs Applied Nano Materials  10.1021/acsanm.9b02412
• Milita S, Liscio F, Cowen L, Cavallini M, Drain BA, Degousée T, Luong S, Fenwick O, Guagliardi A, Schroeder BC and Masciocchi N (2020). Polymorphism in N,N′-dialkyl-naphthalene diimides. Royal Society of Chemistry  Journal of Materials Chemistry C  10.1039/c9tc06967d

2019

• Trifiletti V, Degousée T, Manfredi N, Fenwick O, Colella S and Rizzo A (2019). Molecular Doping for Hole Transporting Materials in Hybrid Perovskite Solar Cells. Mdpi Ag  Metals  vol. 10, (1) 14-14. 10.3390/met10010014
• Liu T, Zhao X, Li J, Liu Z, Liscio F, Milita S, Schroeder BC and Fenwick O (2019). Enhanced control of self-doping in halide perovskites for improved thermoelectric performance. Nature Research (Part of Springer Nature)  Nature Communications  vol. 10, (1) 10.1038/s41467-019-13773-3
• Liu T, Yue S-Y, Ratnasingham S, Degousée T, Varsini P, Briscoe J, McLachlan MA, Hu M and Fenwick O (2019). Unusual Thermal Boundary Resistance in Halide Perovskites: A Way To Tune Ultralow Thermal Conductivity for Thermoelectrics. American Chemical Society  Acs Applied Materials and Interfaces  10.1021/acsami.9b14174
• Wan K, Taroni PJ, Liu Z, Liu Y, Tu Y, Santagiuliana G, Hsia I, Zhang H, Fenwick O, Krause S, Baxendale M, Schroeder BC and Bilotti E (2019). Flexible and Stretchable Self‐Powered Multi‐Sensors Based on the N‐Type Thermoelectric Response of Polyurethane/Na x (Ni‐ett) n Composites. Wiley  Advanced Electronic Materials  1900582-1900582. 10.1002/aelm.201900582
• FENWICK OJ, Cacialli F and Mauthoor S (2019). Mapping sub-surface structure of thin films in three dimensions with an optical near-field. Advanced Theory and Simulations  10.1002/adts.201900033

2018

• ZHAO X, LIU T, Liu H, Wang S, Li X, FENWICK OJ, Lei S and Hu W (2018). Room-Temperature-Processing Fullerene Single-Crystalline Nanoparticles for High-Performance Flexible Perovskite Photovoltaics. Royal Society of Chemistry  Journal of Materials Chemistry A  10.1039/C8TA10510C
• Mohankumar M, Chattopadhyay B, Hadji R, Sanguinet L, Kennedy AR, Lemaur V, Cornil J, FENWICK OJ, Samorì P and Geerts Y (2018). Oxacycle fused [1]benzothieno[3,2-b][1]benzothiophene derivatives: synthesis, electronic structure, electrochemical properties, ionisation potential, and crystal structure. Wiley  Chemphyschem  10.1002/cplu.201800346
• Burton MR, Liu T, McGettrick J, Mehraban S, Baker J, Pockett A, Watson T, Fenwick O and Carnie MJ (2018). Thin Film Tin Selenide (SnSe) Thermoelectric Generators Exhibiting Ultralow Thermal Conductivity. Advanced Materials  vol. 30, (31) 10.1002/adma.201801357
• ZHANG D, PAPAIOANNOU N, David NM, LUO H, GAO H, Tanase LC, Degousee T, Samori P, SAPELKIN A, FENWICK O, TITIRICI M and KRAUSE SK (2018). Photoelectrochemical response of carbon dots (CDs) derived from chitosan and their use in electrochemical imaging. Rsc  Materials Horizons  10.1039/c7mh00784a
• Bilotti E, Fenwick O, Schroeder BC, Baxendale M, Taroni-Junior P, Degousée T and Liu Z (2018). Organic thermoelectric composites materials. Comprehensive Composite Materials II  10.1016/B978-0-12-803581-8.10344-3

2017

• Taroni PJ, SANTAGIULIANA G, WAN K, Calado P, QIU M, ZHANG H, PUGNO N, PALMA M, Stingelin-Stutzmann N, Heeney M, FENWICK O, BAXENDALE M and BILOTTI E (2017). Toward Stretchable Self-Powered Sensors Based on the Thermoelectric Response of PEDOT:PSS/Polyurethane Blends. Wiley  Advanced Functional Materials  10.1002/adfm.201704285
• Bilotti E, FENWICK OJ, Schroeder BC, Baxendale M, Taroni Junior P, Degousee T and Liu Z (2017). Organic Thermoelectric Composites Materials. Comprehensive Composite Materials II , Editors: Zweben CH and Beaumont PWR. 10.1016/B978-0-12-803581-8.10024-4
• FENWICK OJ and Orgiu E (2017). Non-conventional charge transport in organic semiconductors: magnetoresistance and thermoelectricity. Royal Society of Chemistry  Molecular Systems Design and Engineering  47-56. 10.1039/c6me00079g

2016

• Fenwick O, Coutiño-Gonzalez E, Grandjean D, Baekelant W, Richard F, Bonacchi S, De Vos D, Lievens P, Roeffaers M, Hofkens J and Samorì P (2016). Tuning the energetics and tailoring the optical properties of silver clusters confined in zeolites. Nature Materials  10.1038/nmat4652
• Bizzarri C, Fléchon C, FENWICK OJ, Cacialli F, Polo F, Galvez-Lopez MD, Yang C-H, Scintilla S, Sun Y, Frohlich R and De Cola L (2016). Luminescent Neutral Cu(I) Complexes: Synthesis, Characterization and Application in Solution-Processed OLED. Ecs  Ecs Journal of Solid State Science and Technology  vol. 5, (6) R83-R90. 10.1149/2.0021606jss
• Jonckheere D, Coutino-Gonzalez E, Baekelant W, Bueken B, Reinsch H, Stassen I, Fenwick O, Richard F, Samorì P, Ameloot R, Hofkens J, Roeffaers MBJ and De Vos DE (2016). Silver-induced reconstruction of an adeninate-based metal-organic framework for encapsulation of luminescent adenine-stabilized silver clusters. Journal of Materials Chemistry C  vol. 4, (19) 4259-4268. 10.1039/c6tc00260a
• Ruzié C, Karpinska J, Laurent A, Sanguinet L, Hunter S, Anthopoulos TD, Lemaur V, Cornil J, Kennedy AR, Fenwick O, Samorì P, Schweicher G, Chattopadhyay B and Geerts YH (2016). Design, synthesis, chemical stability, packing, cyclic voltammetry, ionisation potential, and charge transport of [1]benzothieno[3,2-: B] [1]benzothiophene derivatives. Journal of Materials Chemistry C  vol. 4, (22) 4863-4879. 10.1039/c6tc01409g

2015

• Li P, Di Stasio F, Eda G, Fenwick O, McDonnell SO, Anderson HL, Chhowalla M and Cacialli F (2015). Luminescent properties of a water-soluble conjugated polymer incorporating graphene-oxide quantum dots. Chemphyschem  vol. 16, (6) 1258-1262. 10.1002/cphc.201402744
• Tregnago G, Steckler TT, Fenwick O, Andersson MR and Cacialli F (2015). Thia- and selena-diazole containing polymers for near-infrared light-emitting diodes. Journal of Materials Chemistry C  vol. 3, (12) 2792-2797. 10.1039/c5tc00118h
• Fenwick O, Van Dyck C, Murugavel K, Cornil D, Reinders F, Haar S, Mayor M, Cornil J and Samorì P (2015). Modulating the charge injection in organic field-effect transistors: Fluorinated oligophenyl self-assembled monolayers for high work function electrodes. Journal of Materials Chemistry C  vol. 3, (13) 3007-3015. 10.1039/c5tc00243e

2014

• Masillamani AM, Osella S, Liscio A, Fenwick O, Reinders F, Mayor M, Palermo V, Cornil J and Samorì P (2014). Light-induced reversible modification of the work function of a new perfluorinated biphenyl azobenzene chemisorbed on Au (111). Nanoscale  vol. 6, (15) 8969-8977. 10.1039/c4nr01880j
• Steckler TT, Lee MJ, Chen Z, Fenwick O, Andersson MR, Cacialli F and Sirringhaus H (2014). Multifunctional materials for OFETs, LEFETs and NIR PLEDs. Journal of Materials Chemistry C  vol. 2, (26) 5133-5141. 10.1039/c4tc00342j

2013

• Steckler TT, Fenwick O, Lockwood T, Andersson MR and Cacialli F (2013). Near-infrared polymer light-emitting diodes based on low-energy gap oligomers copolymerized into a high-gap polymer host. Macromolecular Rapid Communications  vol. 34, (12) 990-996. 10.1002/marc.201300240
• Kervyn S, Fenwick O, Di Stasio F, Shin YS, Wouters J, Accorsi G, Osella S, Beljonne D, Cacialli F and Bonifazi D (2013). Polymorphism, fluorescence, and optoelectronic properties of a borazine derivative. Chemistry - a European Journal  vol. 19, (24) 7771-7779. 10.1002/chem.201204598
• Stas S, Balandier JY, Lemaur V, Fenwick O, Tregnago G, Quist F, Cacialli F, Cornil J and Geerts YH (2013). Straightforward access to diketopyrrolopyrrole (DPP) dimers. Dyes and Pigments  vol. 97, (1) 198-208. 10.1016/j.dyepig.2012.12.005
• Crivillers N, Osella S, Van Dyck C, Lazzerini GM, Cornil D, Liscio A, Di Stasio F, Mian S, Fenwick O, Reinders F, Neuburger M, Treossi E, Mayor M, Palermo V, Cacialli F, Cornil J and Samorì P (2013). Large work function shift of gold induced by a novel perfluorinated azobenzene-based self-assembled monolayer. Advanced Materials  vol. 25, (3) 432-436. 10.1002/adma.201201737
• Fenwick O, Fusco S, Baig TN, Di Stasio F, Steckler TT, Henriksson P, Fléchon C, Andersson MR and Cacialli F (2013). Efficient red electroluminescence from diketopyrrolopyrrole copolymerised with a polyfluorene. Apl Materials  vol. 1, (3) 10.1063/1.4820433

2012

• Ding M, Fenwick O, Di Stasio F, Ou JY, Sessions N, Jung Y, Cacialli F and Brambilla G (2012). Efficient light confinement with nanostructured optical microfiber tips. Optics Communications  vol. 285, (23) 4688-4697. 10.1016/j.optcom.2012.05.006
• Tolk M, Fenwick O, Ahmad S and Cacialli F (2012). The influence of the substrate thermal conductivity on scanning thermochemical lithography. Journal of Applied Physics  vol. 111, (12) 10.1063/1.4729809
• Fenwick O, Oliver K and Cacialli F (2012). Cross-linking of a poly(3,4-ethylene dioxythiophene):(polystyrene sulfonic acid) hole injection layer with a bis-azide salt and the effect of atmospheric processing conditions on device properties. Applied Physics Letters  vol. 100, (5) 10.1063/1.3680606

2011

• Crivillers N, Liscio A, Di Stasio F, Van Dyck C, Osella S, Cornil D, Mian S, Lazzerini GM, Fenwick O, Orgiu E, Reinders F, Braun S, Fahlman M, Mayor M, Cornil J, Palermo V, Cacialli F and Samorì P (2011). Photoinduced work function changes by isomerization of a densely packed azobenzene-based SAM on Au: A joint experimental and theoretical study. Physical Chemistry Chemical Physics  vol. 13, (32) 14302-14310. 10.1039/c1cp20851a
• Li P, Fenwick O, Yilmaz S, Breusov D, Caruana DJ, Allard S, Scherf U and Cacialli F (2011). Dual functions of a novel low-gap polymer for near infra-red photovoltaics and light-emitting diodes. Chemical Communications  vol. 47, (31) 8820-8822. 10.1039/c1cc12752g
• Fenwick O, Sprafke JK, Binas J, Kondratuk DV, Di Stasio F, Anderson HL and Cacialli F (2011). Linear and cyclic porphyrin hexamers as near-infrared emitters in organic light-emitting diodes. Nano Letters  vol. 11, (6) 2451-2456. 10.1021/nl2008778
• De Luca G, Pisula W, Credgington D, Treossi E, Fenwick O, Lazzerini GM, Dabirian R, Orgiu E, Liscio A, Palermo V, Müllen K, Cacialli F and Samorì P (2011). Non-conventional processing and post-processing methods for the nanostructuring of conjugated materials for organic electronics. Advanced Functional Materials  vol. 21, (7) 1279-1295. 10.1002/adfm.201001769
• De Luca G, Pisula W, Credgington D, Treossi E, Fenwick O, Lazzerini GM, Dabirian R, Orgiu E, Liscio A, Palermo V, Müllen K, Cacialli F and Samorì P (2011). Organic Electronics: Non‐conventional Processing and Post‐processing Methods for the Nanostructuring of Conjugated Materials for Organic Electronics (Adv. Funct. Mater. 7/2011). Advanced Functional Materials  vol. 21, (7) 1206-1206. 10.1002/adfm.201190017
• Liscio A, Palermo V, Fenwick O, Braun S, Müllen K, Fahlman M, Cacialli F and Samorì P (2011). Local surface potential of π-conjugated nanostructures by Kelvin Probe Force microscopy: Effect of the sampling depth. Small  vol. 7, (5) 634-639. 10.1002/smll.201001770

2010

• Credgington D, Fenwick O, Charas A, Morgado J, Suhling K and Cacialli F (2010). High-resolution scanning near-field optical lithography of conjugated polymers. Advanced Functional Materials  vol. 20, (17) 2842-2847. 10.1002/adfm.201000202
• Winroth G, Fenwick O, Scott MA, Yip D, Howorka S and Cacialli F (2010). Interfacial dipole dynamics of light-emitting diodes incorporating a poly(amidoamine) dendrimer monolayer. Applied Physics Letters  vol. 97, (4) 10.1063/1.3459964
• Brovelli S, Guan H, Winroth G, Fenwick O, Di Stasio F, Daik R, Feast WJ, Meinardi F and Cacialli F (2010). White luminescence from single-layer devices of nonresonant polymer blends. Applied Physics Letters  vol. 96, (21) 10.1063/1.3387816
• Schwartz E, Lim E, Gowda CM, Liscio A, Fenwick O, Tu G, Palermo V, De Gelder R, Cornelissen JJLM, Van Eck ERH, Kentgens APM, Cacialli F, Nolte RJM, Samorì P, Huck WTS and Rowan AE (2010). Synthesis, characterization, and surface initiated polymerization of carbazole functionalized isocyanides. Chemistry of Materials  vol. 22, (8) 2597-2607. 10.1021/cm903664g
• Brovelli S, Meinardi F, Winroth G, Fenwick O, Sforazzini G, Frampton MJ, Zalewski L, Levitt JA, Marinello F, Schiavuta P, Suhling K, Anderson HL and Cacialli F (2010). White electroluminescence by supramolecular control of energy transfer in blends of organic-soluble encapsulated polyfluorenes. Advanced Functional Materials  vol. 20, (2) 272-280. 10.1002/adfm.200901764

2009

• Fenwick O, Bozec L, Credgington D, Hammiche A, Lazzerini GM, Silberberg YR and Cacialli F (2009). Thermochemical nanopatterning of organic semiconductors. Nature Nanotechnology  vol. 4, (10) 664-668. 10.1038/nnano.2009.254

2008

• Brovelli S, Latini G, Frampton MJ, McDonnell SO, Oddy FE, Fenwick O, Anderson HL and Cacialli F (2008). Tuning intrachain versus interchain photophysics via control of the threading ratio of conjugated polyrotaxanes. Nano Letters  vol. 8, (12) 4546-4551. 10.1021/nl802775a
• Charas A, Alves H, Martinho JMG, Alcácer L, Fenwick O, Cacialli F and Morgado J (2008). Photoacid cross-linkable polyfluorenes for optoelectronics applications. Synthetic Metals  vol. 158, (16) 643-653. 10.1016/j.synthmet.2008.02.016

2006

• Ambrosio A, Fenwick O, Cacialli F, Micheletto R, Kawakami Y, Gucciardi PG, Kang DJ and Allegrini M (2006). Shape dependent thermal effects in apertured fiber probes for scanning near-field optical microscopy. Journal of Applied Physics  vol. 99, (8) 10.1063/1.2188250

2005

• Gucciardi PG, Pata¿ S, Ambrosio A, Allegrini M, Downes AD, Latini G, Fenwick O and Cacialli F (2005). Observation of tip-to-sample heat transfer in near-field optical microscopy using metal-coated fiber probes. Applied Physics Letters  vol. 86, (20) 1-3. 10.1063/1.1929877
• Latini G, Downes A, Fenwick O, Ambrosio A, Allegrini M, Daniel C, Silva C, Gucciardi PG, Pata¿ S, Daik R, Feast WJ and Cacialli F (2005). Optical probing of sample heating in scanning near-field experiments with apertured probes. Applied Physics Letters  vol. 86, (1) 10.1063/1.1842860

Grants of specific relevance to Materials Research

Grants

• Organic thermoelectrics in multiple structural and transport regimes
  Fenwick OJ
  £492,780 Royal Society (19-10-2015 - 18-10-2020)
  Abstract
• International Exchanges 2016 Round 3
  Fenwick OJ
  £12,000 Royal Society (31-03-2017 - 30-03-2019)
  Abstract

• Towards in-vivo electrochemical imaging with flexible, light-addressable electrodes
  Krause SK and Fenwick OJ
  £15,000 Royal Society (15-03-2018 - 14-03-2019)