Imperial College London

ProfessorIainMcCulloch

Faculty of Natural SciencesDepartment of Chemistry

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 5669i.mcculloch

 
 
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Location

 

Molecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Publication Type
Year
to

529 results found

Jacobs IE, Lin Y, Huang Y, Ren X, Simatos D, Chen C, Tjhe D, Statz M, Lai L, Finn PA, Neal WG, D'Avino G, Lemaur V, Fratini S, Beljonne D, Strzalka J, Nielsen CB, Barlow S, Marder SR, McCulloch I, Sirringhaus Het al., 2021, High-Efficiency Ion-Exchange Doping of Conducting Polymers, ADVANCED MATERIALS, ISSN: 0935-9648

Journal article

Quill TJ, LeCroy G, Melianas A, Rawlings D, Thiburce Q, Sheelamanthula R, Cheng C, Tuchman Y, Keene ST, McCulloch I, Segalman RA, Chabinyc ML, Salleo Aet al., 2021, Ion Pair Uptake in Ion Gel Devices Based on Organic Mixed Ionic-Electronic Conductors, ADVANCED FUNCTIONAL MATERIALS, ISSN: 1616-301X

Journal article

Hallani RK, Paulsen BD, Petty AJ, Sheelamanthula R, Moser M, Thorley KJ, Sohn W, Rashid RB, Savva A, Moro S, Parker JP, Drury O, Alsufyani M, Neophytou M, Kosco J, Inal S, Costantini G, Rivnay J, McCulloch Iet al., 2021, Regiochemistry-Driven Organic Electrochemical Transistor Performance Enhancement in Ethylene Glycol-Functionalized Polythiophenes, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 143, Pages: 11007-11018, ISSN: 0002-7863

Journal article

Clarke AJ, Luke J, Meitzner R, Wu J, Wang Y, Lee HKH, Speller EM, Bristow H, Cha H, Newman MJ, Hooper K, Evans A, Gao F, Hoppe H, McCulloch I, Schubert US, Watson TM, Durrant JR, Tsoi WC, Kim J-S, Li Zet al., 2021, Non-fullerene acceptor photostability and its impact on organic solar cell lifetime, CELL REPORTS PHYSICAL SCIENCE, Vol: 2, ISSN: 2666-3864

Journal article

Zhang T, Moser M, Scaccabarozzi A, Bristow H, Jacoutot P, Wadsworth A, Anthopoulos T, McCulloch I, Gasparini Net al., 2021, Ternary organic photodetectors based on pseudo–binaries nonfullerene–based acceptors, Journal of Physics: Materials, Vol: 4, Pages: 1-8, ISSN: 2515-7639

The addition of a third component to a donor:acceptor blend is a powerful tool to enhance the power conversion efficiency of organic solar cells. Featuring a similar operating mechanism, organic photodetectors are also expected to benefit from this approach. Here, we fabricated ternary organic photodetectors, based on a polymer donor and two nonfullerene acceptors, resulting in a low dark current of 0.42 nA cm−2 at −2 V and a broadband specific detectivity of 1012 Jones. We found that exciton recombination in the binary blend is reduced in ternary devices due to the formation of a pseudo-binary microstructure with mixed donor–acceptor phases. With this approach a wide range of intermediate open-circuit voltages is accessible, without sacrificing light-to-current conversion. This results in ternary organic photodetector (TOPD) with improved Responsivity values in the near-infrared. Moreover, morphology analyses reveal that TOPD devices showed improved microstructure ordering and consequentially higher charge carrier mobilities compared to the reference devices.

Journal article

Iqbal HF, Waldrip M, Chen H, McCulloch I, Jurchescu ODet al., 2021, Elucidating the Role of Water-Related Traps in the Operation of Polymer Field-Effect Transistors, ADVANCED ELECTRONIC MATERIALS, ISSN: 2199-160X

Journal article

Isikgor FH, Furlan F, Liu J, Ugur E, Eswaran MK, Subbiah AS, Yengel E, De Bastiani M, Harrison GT, Zhumagali S, Howells CT, Aydin E, Wang M, Gasparini N, Allen TG, Rehman AU, Van Kerschaver E, Baran D, McCulloch I, Anthopoulos TD, Schwingenschlogl U, Laquai F, De Wolf Set al., 2021, Concurrent cationic and anionic perovskite defect passivation enables 27.4% perovskite/silicon tandems with suppression of halide segregation, JOULE, Vol: 5, Pages: 1566-1586, ISSN: 2542-4351

Journal article

Griggs S, Marks A, Bristow H, McCulloch Iet al., 2021, n-Type organic semiconducting polymers: stability limitations, design considerations and applications, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 9, Pages: 8099-8128, ISSN: 2050-7526

Journal article

Khan JI, Alsaggaf S, Ashraf RS, Purushothaman B, Chaturvedi N, McCulloch I, Laquai Fet al., 2021, Efficiency Limits in Wide‐Bandgap Ge‐Containing Donor Polymer:Non‐Fullerene Acceptor Bulk Heterojunction Solar Cells, physica status solidi (RRL) – Rapid Research Letters, ISSN: 1862-6254

Journal article

Koklu A, Wustoni S, Musteata V-E, Ohayon D, Moser M, McCulloch I, Nunes SP, Inal Set al., 2021, Microfluidic Integrated Organic Electrochemical Transistor with a Nanoporous Membrane for Amyloid-beta Detection, ACS NANO, Vol: 15, Pages: 8130-8141, ISSN: 1936-0851

Journal article

Khan J, Alamoudi MA, Chaturvedi N, Ashraf RS, Nabi MN, Markina A, Liu W, Dela Pena TA, Zhang W, Aleveque O, Harrison GT, Alsufyani W, Levillain E, De Wolf S, Andrienko D, McCulloch I, Laquai Fet al., 2021, Impact of Acceptor Quadrupole Moment on Charge Generation and Recombination in Blends of IDT-Based Non-Fullerene Acceptors with PCE10 as Donor Polymer, ADVANCED ENERGY MATERIALS, Vol: 11, ISSN: 1614-6832

Journal article

Guo K, Wustoni S, Koklu A, Diaz-Galicia E, Moser M, Hama A, Alqahtani AA, Ahmad AN, Alhamlan FS, Shuaib M, Pain A, McCulloch I, Arold ST, Grunberg R, Inal Set al., 2021, Rapid single-molecule detection of COVID-19 and MERS antigens via nanobody-functionalized organic electrochemical transistors, NATURE BIOMEDICAL ENGINEERING, Vol: 5, Pages: 666-677, ISSN: 2157-846X

Journal article

Carey T, Arbab A, Anzi L, Bristow H, Hui F, Bohm S, Wyatt-Moon G, Flewitt A, Wadsworth A, Gasparini N, Kim JM, Lanza M, McCulloch I, Sordan R, Torrisi Fet al., 2021, Inkjet printed circuits with 2D semiconductor inks for high-performance electronics, Advanced Electronic Materials, ISSN: 2199-160X

Air-stable semiconducting inks suitable for complementary logic are key to create low-power printed integrated circuits (ICs). High-performance printable electronic inks with 2D materials have the potential to enable the next generation of high performance low-cost printed digital electronics. Here, the authors demonstrate air-stable, low voltage (<5 V) operation of inkjet-printed n-type molybdenum disulfide (MoS2), and p-type indacenodithiophene-co-benzothiadiazole (IDT-BT) field-effect transistors (FETs), estimating an average switching time of τMoS2 ≈ 4.1 μs for the MoS2 FETs. They achieve this by engineering high-quality MoS2 and air-stable IDT-BT inks suitable for inkjet-printing complementary pairs of n-type MoS2 and p-type IDT-BT FETs. They then integrate MoS2 and IDT-BT FETs to realize inkjet-printed complementary logic inverters with a voltage gain |Av| ≈ 4 when in resistive load configuration and |Av| ≈ 1.4 in complementary configuration. These results represent a key enabling step towards ubiquitous long-term stable, low-cost printed digital ICs.

Journal article

Iqbal HF, Ai Q, Thorley KJ, Chen H, McCulloch I, Risko C, Anthony JE, Jurchescu ODet al., 2021, Suppressing bias stress degradation in high performance solution processed organic transistors operating in air, NATURE COMMUNICATIONS, Vol: 12, ISSN: 2041-1723

Journal article

Chen X, Marks A, Paulsen BD, Wu R, Rashid RB, Chen H, Alsufyani M, Rivnay J, McCulloch Iet al., 2021, n ‐Type Rigid Semiconducting Polymers Bearing Oligo(Ethylene Glycol) Side Chains for High‐Performance Organic Electrochemical Transistors, Angewandte Chemie, Vol: 133, Pages: 9454-9459, ISSN: 0044-8249

Journal article

Moser M, Gladisch J, Ghosh S, Hidalgo TC, Ponder JF, Sheelamanthula R, Thiburce Q, Gasparini N, Wadsworth A, Salleo A, Inal S, Berggren M, Zozoulenko I, Stavrinidou E, McCulloch Iet al., 2021, Controlling Electrochemically Induced Volume Changes in Conjugated Polymers by Chemical Design: from Theory to Devices, ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X

Journal article

He Y, Liao H, Lyu S, Xu X-Q, Li Z, McCulloch I, Yue W, Wang Yet al., 2021, Coupling molecular rigidity and flexibility on fused backbones for NIR-II photothermal conversion, CHEMICAL SCIENCE, Vol: 12, Pages: 5177-5184, ISSN: 2041-6520

Journal article

Ghasemi M, Balar N, Peng Z, Hu H, Qin Y, Kim T, Rech JJ, Bidwell M, Mask W, McCulloch I, You W, Amassian A, Risko C, O'Connor BT, Ade Het al., 2021, A molecular interaction-diffusion framework for predicting organic solar cell stability, NATURE MATERIALS, Vol: 20, Pages: 525-+, ISSN: 1476-1122

Journal article

Xiao M, Carey RL, Chen H, Jiao X, Lemaur V, Schott S, Nikolka M, Jellett C, Sadhanala A, Rogers S, Senanayak SP, Onwubiko A, Han S, Zhang Z, Abdi-Jalebi M, Zhang Y, Thomas TH, Mahmoudi N, Lai L, Selezneva E, Ren X, Nguyen M, Wang Q, Jacobs I, Yue W, McNeill CR, Liu G, Beljonne D, McCulloch I, Sirringhaus Het al., 2021, Charge transport physics of a unique class of rigid-rod conjugated polymers with fused-ring conjugated units linked by double carbon-carbon bonds, SCIENCE ADVANCES, Vol: 7, ISSN: 2375-2548

Journal article

dos Santos JM, Neophytou M, Wiles A, Howells CT, Ashraf RS, McCulloch I, Cooke Get al., 2021, Influence of alkyne spacers on the performance of thiophene-based donors in bulk-heterojunction organic photovoltaic cells, DYES AND PIGMENTS, Vol: 188, ISSN: 0143-7208

Journal article

Moser M, Savva A, Thorley K, Paulsen BD, Hidalgo TC, Ohayon D, Chen H, Giovannitti A, Marks A, Gasparini N, Wadsworth A, Rivnay J, Inal S, McCulloch Iet al., 2021, Polaron Delocalization in Donor–Acceptor Polymers and its Impact on Organic Electrochemical Transistor Performance, Angewandte Chemie, Vol: 133, Pages: 7856-7864, ISSN: 0044-8249

Journal article

Moser M, Wadsworth A, Gasparini N, McCulloch Iet al., 2021, Challenges to the Success of Commercial Organic Photovoltaic Products, ADVANCED ENERGY MATERIALS, Vol: 11, ISSN: 1614-6832

Journal article

Gasparini N, Camargo FVA, Frühwald S, Nagahara T, Classen A, Roland S, Wadsworth A, Gregoriou VG, Chochos C, Neher D, Salvador M, Baran D, McCulloch I, Görling A, Lüer L, Cerullo G, Brabec CJet al., 2021, Adjusting the energy of interfacial states in organic photovoltaics for maximum efficiency, Nature Communications, Vol: 12, Pages: 1-8, ISSN: 2041-1723

A critical bottleneck for improving the performance of organic solar cells (OSC) is minimising non-radiative losses in the interfacial charge-transfer (CT) state via the formation of hybrid energetic states. This requires small energetic offsets often detrimental for high external quantum efficiency (EQE). Here, we obtain OSC with both non-radiative voltage losses (0.24 V) and photocurrent losses (EQE > 80%) simultaneously minimised. The interfacial CT states separate into free carriers with ≈40-ps time constant. We combine device and spectroscopic data to model the thermodynamics of charge separation and extraction, revealing that the relatively high performance of the devices arises from an optimal adjustment of the CT state energy, which determines how the available overall driving force is efficiently used to maximize both exciton splitting and charge separation. The model proposed is universal for donor:acceptor (D:A) with low driving forces and predicts which D:A will benefit from a morphology optimization for highly efficient OSC.

Journal article

Surgailis J, Savva A, Druet V, Paulsen BD, Wu R, Hamidi-Sakr A, Ohayon D, Nikiforidis G, Chen X, McCulloch I, Rivnay J, Inal Set al., 2021, Mixed Conduction in an N-Type Organic Semiconductor in the Absence of Hydrophilic Side-Chains, ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X

Journal article

Chen X, Marks A, Paulsen BD, Wu R, Rashid RB, Chen H, Alsufyani M, Rivnay J, McCulloch Iet al., 2021, n-Type Rigid Semiconducting Polymers Bearing Oligo(Ethylene Glycol) Side Chains for High-Performance Organic Electrochemical Transistors, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 60, Pages: 9368-9373, ISSN: 1433-7851

Journal article

Paterson AF, Li R, Markina A, Tsetseris L, MacPhee S, Faber H, Emwas A-H, Panidi J, Bristow H, Wadsworth A, Baran D, Andrienko D, Heeney M, McCulloch I, Anthopoulos TDet al., 2021, N-Doping improves charge transport and morphology in the organic non-fullerene acceptor O-IDTBR dagger, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 9, Pages: 4486-4495, ISSN: 2050-7526

Journal article

Tan STM, Giovannitti A, Melianas A, Moser M, Cotts BL, Singh D, McCulloch I, Salleo Aet al., 2021, High-Gain Chemically Gated Organic Electrochemical Transistor, ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X

Journal article

Isikgor FH, Subbiah AS, Eswaran MK, Howells CT, Babayigit A, De Bastiani M, Yengel E, Liu J, Furlan F, Harrison GT, Zhumagali S, Khan J, Laquai F, Anthopoulos TD, McCulloch I, Schwingenschloegl U, De Wolf Set al., 2021, Scaling-up perovskite solar cells on hydrophobic surfaces, NANO ENERGY, Vol: 81, ISSN: 2211-2855

Journal article

Moser M, Savva A, Thorley K, Paulsen BD, Hidalgo TC, Ohayon D, Chen H, Giovannitti A, Marks A, Gasparini N, Wadsworth A, Rivnay J, Inal S, McCulloch Iet al., 2021, Polaron Delocalization in Donor-Acceptor Polymers and its Impact on Organic Electrochemical Transistor Performance, ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, Vol: 60, Pages: 7777-7785, ISSN: 1433-7851

Journal article

Babics M, Bristow H, Zhang W, Wadsworth A, Neophytou M, Gasparini N, McCulloch Iet al., 2021, Non-fullerene-based organic photodetectors for infrared communication, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 9, Pages: 2375-2380, ISSN: 2050-7526

Journal article

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