Lewis Cowen

ORCID: 0000-0003-0019-7731
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About
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Conducting polymers and applications
  • Organic Electronics and Photovoltaics
  • Organic Light-Emitting Diodes Research
  • Gas Sensing Nanomaterials and Sensors
  • Liquid Crystal Research Advancements
  • Advanced Chemical Sensor Technologies
  • Synthesis and Catalytic Reactions
  • Molecular Junctions and Nanostructures
  • Synthesis of heterocyclic compounds
  • Organic Chemistry Cycloaddition Reactions
  • Advanced Sensor and Energy Harvesting Materials
  • Crystallography and molecular interactions
  • Synthesis and Properties of Aromatic Compounds
  • Polymer composites and self-healing
  • Analytical Chemistry and Sensors
  • Biomedical and Engineering Education
  • Advanced Thermoelectric Materials and Devices
  • Perovskite Materials and Applications
  • Luminescence and Fluorescent Materials

University College London
2020-2025

University of Huddersfield
2019

Queen Mary University of London
2017

Organic semiconductor materials have been promising alternatives to their inorganic counterparts in several electronic applications such as solar cells, light emitting diodes, field effect transistors well thermoelectric generators. Their low cost, weight and flexibility make them appealing future foldable electronics wearable circuits using printing techniques. In this report, we present a mini-review on the organic that used for energy generation.

10.1149/2.0121703jss article EN cc-by ECS Journal of Solid State Science and Technology 2017-01-01

Abstract Mechanical failure of π‐conjugated polymer thin films is unavoidable under cyclic loading conditions, due to intrinsic defects and poor resistance crack propagation. Here, the first tear‐resistant room‐temperature self‐healable semiconducting composite presented, consisting conjugated polymers butyl rubber elastomers. This new displays both a record‐low elastic modulus (<1 MPa) ultrahigh deformability with fracture strain above 800%. More importantly, behavior not sensitive...

10.1002/adfm.202000663 article EN Advanced Functional Materials 2020-05-20

Abstract Achieving spectrally selective organic photodetectors (OPDs) without using broadband‐absorbing semiconductors with input filtering is a strenuous challenge. Charge collection narrowing (CCN) promising strategy to obtain near‐infrared (NIR) OPD by adopting thick bulk heterojunction (BHJ) as active layers. In this work, random terpolymer comprised from diketopyrrolopyrrole (DPP), thiophene (T) and benzothiadiazole (BT), ran DPP‐2TBT, prepared used donor material in combination the low...

10.1002/adfm.202422637 article EN cc-by Advanced Functional Materials 2025-01-10

<italic>N</italic>-Alkyl naphthalene diimides show a highly versatile thermally-induced polymorphic behavior, including liquid crystalline mesophases, fully characterized in powders and thin films by combining thermal, diffraction imaging techniques.

10.1039/c9tc06967d article EN Journal of Materials Chemistry C 2020-01-01

The structure of a self-doping naphthalenetetracarboxylic diimide was found to be the product unexpected chemical reactions. effect mixed composition has on doped film morphology and electronic performance is also reported.

10.1039/d2tc01108e article EN cc-by Journal of Materials Chemistry C 2022-01-01

Intrinsically conducting diketopyrrolopyrrole (DPP) compounds functionalised with pendant quaternary ammonium groups have been synthesised. The hydroxide forms were found to be the product of base hydrolysis DPP amide during synthesis, likely made possible by restricted resonance. This gave mixed chemical compositions solutions and conductive films formed drop-casting. Chemical decomposition hydrolysed was also observed at temperatures above 85 °C. Conductivities approximately 3 × 10−4 S m−1...

10.1016/j.synthmet.2024.117678 article EN cc-by Synthetic Metals 2024-06-09
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