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• 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
  • Cite
  • Citations: 40
• 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

  , JOURNAL OF MATERIALS CHEMISTRY C, Vol: 9, Pages: 4486-4495, ISSN: 2050-7526
  • Cite
  • Citations: 23
• 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
  • Author Web Link
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  • Citations: 2
• 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
  • Cite
  • Citations: 9
• Journal article
  Maria IP, Paulsen BD, Savva A, Ohayon D, Wu R, Hallani R, Basu A, Du W, Anthopoulos TD, Inal S, Rivnay J, McCulloch I, Giovannitti Aet al., 2021,

  The Effect of Alkyl Spacers on the Mixed Ionic-Electronic Conduction Properties of N-Type Polymers

  , ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X
  • Cite
  • Citations: 106
• 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
  • Cite
  • Citations: 34
• 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

  <jats:title>Abstract</jats:title><jats:p>Donor–acceptor (D‐A) polymers are promising materials for organic electrochemical transistors (OECTs), as they minimize detrimental faradaic side‐reactions during OECT operation, yet their steady‐state OECT performance still lags far behind their all‐donor counterparts. We report three D‐A polymers based on the diketopyrrolopyrrole unit that afford OECT performances similar to those of all‐donor polymers, hence representing a significant improvement to the previously developed D‐A copolymers. In addition to improved OECT performance, DFT simulations of the polymers and their respective hole polarons also reveal a positive correlation between hole polaron delocalization and steady‐state OECT performance, providing new insights into the design of OECT materials. Importantly, we demonstrate how polaron delocalization can be tuned directly at the molecular level by selection of the building blocks comprising the polymers’ conjugated backbone, thus paving the way for the development of even higher performing OECT polymers.</jats:p>

  • Abstract
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• 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
  • Cite
  • Citations: 123
• 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.

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• Journal article
  Vasilopoulou M, da SWJ, Kim HP, Carnio BN, Ahvazi B, Noh MFM, Soh MF, Elezzabi AY, Schneider F, Teridi MAM, Soultati A, Argitis P, Davazoglou D, Jang J, Mcculloch I, Gasparini N, Yusoff ARM, Nazeeruddin MKet al., 2021,

  Free-standing nanopaper electrode for all-printed super-flexible perovskite solar cells

  <title>Abstract</title> <p>The development of all-printed, flexible solar cells of high efficiency and ultra-low weight will offer advancements for new market entrants. Herein, we report the design and fabrication of all-printed in ambient air, super-flexible perovskite solar cells with approaching 20% power conversion efficiency and extremely low weight of 5.1 g m-2 leading to an unprecedented power-to-weight ratio of 38,470 W Kg-1. This performance advance was achieved through the design of a highly transparent and conducting nanopaper used as a free-standing bottom electrode (FSBE). The FSBE consisted of cellulose nanocrystals grafted with semi-metallic super-reduced polyoxometalate clusters that enabled high conductivities up to 18 S cm-1 combined with transparency &gt;96%. It also acted as a conformal barrier preventing performance loss upon heating at 95 oC under continuous illumination in inert environment; and strong resistance to decomposition when immersed in a mild citric acid water solution for 100 days, which we further exploit to demonstrate full device recyclability. The inherent flexibility of cellulose nanocrystals enabled remarkable flexibility of these cells under 2,000 repeated bending and folding cycles and mechanical strength upon extensive strain up to 20%. Notably, the nanopaper remained unaffected for strains up to 60%. These findings open the door for efficient and lightweight solar cells with a low environmental impact.</p>

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• Journal article
  Karuthedath S, Gorenflot J, Firdaus Y, Chaturvedi N, De Castro CSP, Harrison GT, Khan JI, Markina A, Balawi AH, Pena TAD, Liu W, Liang R-Z, Sharma A, Paleti SHK, Zhang W, Lin Y, Alarousu E, Anjum DH, Beaujuge PM, De Wolf S, McCulloch I, Anthopoulos TD, Baran D, Andrienko D, Laquai Fet al., 2021,

  Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells

  , NATURE MATERIALS, Vol: 20, Pages: 378-+, ISSN: 1476-1122
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  • Citations: 351
• 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
  • Cite
  • Citations: 88
• 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
  • Cite
  • Citations: 64
• Journal article
  Koklu A, Ohayon D, Wustoni S, Hama A, Chen X, McCulloch I, Inal Set al., 2021,

  Microfluidics integrated n-type organic electrochemical transistor for metabolite sensing

  , SENSORS AND ACTUATORS B-CHEMICAL, Vol: 329
  • Cite
  • Citations: 60
• Journal article
  Xiao M, Sadhanala A, Abdi-Jalebi M, Thomas TH, Ren X, Zhang T, Chen H, Carey RL, Wang Q, Senanayak SP, Jellett C, Onwubiko A, Moser M, Liao H, Yue W, McCulloch I, Nikolka M, Sirringhaus Het al., 2021,

  Linking Glass-Transition Behavior to Photophysical and Charge Transport Properties of High-Mobility Conjugated Polymers

  , ADVANCED FUNCTIONAL MATERIALS, Vol: 31, ISSN: 1616-301X
  • Cite
  • Citations: 35

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