Publications
637 results found
Carey T, Arbab A, Anzi L, et al., 2020, Inkjet printed circuits with two-dimensional semiconductor inks for high-performance electronics, Publisher: arXiv
Air-stable semiconducting inks suitable for complementary logic are key tocreate low-power printed integrated circuits (ICs). High-performance printableelectronic inks with two-dimensional materials have the potential to enable thenext generation of high performance, low-cost printed digital electronics. Herewe demonstrate air-stable, low voltage (< 5 V) operation of inkjet-printedn-type molybdenum disulfide (MoS2) and p-typeindacenodithiophene-co-benzothiadiazole (IDT-BT) field-effect transistors(FETs), estimating a switching time of {\tau} ~ 3.3 {\mu}s for the MoS2 FETs.We achieve this by engineering high-quality MoS2 and air-stable IDT-BT inkssuitable for inkjet-printing complementary pairs of n-type MoS2 and p-typeIDT-BT FETs. We then integrate MoS2 and IDT-BT FETs to realise inkjet-printedcomplementary logic inverters with a voltage gain |Av| ~ 4 when in resistiveload configuration and |Av| ~ 1.36 in complementary configuration. Theseresults represent a key enabling step towards ubiquitous long-term stable,low-cost printed digital ICs.
Alsufyani M, Hallani RK, Wang S, et al., 2020, The effect of aromatic ring size in electron deficient semiconducting polymers for n-type organic thermoelectrics, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 8, Pages: 15150-15157, ISSN: 2050-7526
- Author Web Link
- Cite
- Citations: 24
Scaccabarozzi AD, Basham J, Yu L, et al., 2020, High-density polyethylene-an inert additive with stabilizing effects on organic field-effect transistors, JOURNAL OF MATERIALS CHEMISTRY C, Vol: 8, Pages: 15406-15415, ISSN: 2050-7526
- Author Web Link
- Cite
- Citations: 13
Jiao X, Statz M, Lai L, et al., 2020, Resolving Different Physical Origins toward Crystallite Imperfection in Semiconducting Polymers: Crystallite Size vs Paracrystallinity, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 124, Pages: 10529-10538, ISSN: 1520-6106
- Author Web Link
- Cite
- Citations: 8
Guo K, Wustoni S, Koklu A, et al., 2020, A nanobody-functionalized organic electrochemical transistor for the rapid detection of SARS-CoV-2 and MERS antigens at the physical limit
<jats:title>Abstract</jats:title><jats:p>The COVID-19 pandemic highlights the need for rapid protein detection and quantification at the single-molecule level in a format that is simple and robust enough for widespread point-of-care applications. We here introduce a modular nanobody-organic electrochemical transistor architecture that enables the fast and specific detection and quantification of single-molecule to nanomolar protein antigen concentrations in complex bodily fluids. The sensor combines a new solution-processable organic semiconductor material in the transistor channel with the high-density and orientation-controlled bioconjugation of nanobody fusion proteins on disposable gate electrodes. It provides results after a 10 minutes exposure to 5 µL of unprocessed samples, maintains high specificity and single-molecule sensitivity in human saliva or serum, and is rapidly reprogrammed towards any protein target for which nanobodies exist. We demonstrate the use of this highly modular platform for the detection of green fluorescent protein, SARS-CoV-1/2, and MERS-CoV spike proteins and validate the sensor for COVID-19 screening in unprocessed clinical nasopharyngeal swab and saliva samples.</jats:p>
Bristow H, Jacoutot P, Scaccabarozzi AD, et al., 2020, Nonfullerene-Based Organic Photodetectors for Ultrahigh Sensitivity Visible Light Detection, ACS APPLIED MATERIALS & INTERFACES, Vol: 12, Pages: 48836-48844, ISSN: 1944-8244
- Author Web Link
- Cite
- Citations: 33
Seitkhan A, Neophytou M, Hallani RK, et al., 2020, A Multilayered Electron Extracting System for Efficient Perovskite Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 30, ISSN: 1616-301X
- Author Web Link
- Cite
- Citations: 16
Kosco J, Moruzzi F, Willner B, et al., 2020, Photocatalysts Based on Organic Semiconductors with Tunable Energy Levels for Solar Fuel Applications, ADVANCED ENERGY MATERIALS, Vol: 10, ISSN: 1614-6832
- Author Web Link
- Cite
- Citations: 75
Firdaus Y, Le Corre VM, Karuthedath S, et al., 2020, Long-range exciton diffusion in molecular non-fullerene acceptors, NATURE COMMUNICATIONS, Vol: 11
- Author Web Link
- Cite
- Citations: 153
Rezasoltani E, Guilbert AAY, Yan J, et al., 2020, Correlating the phase behavior with the device performance in binary poly-3-hexylthiophene: nonfullerene acceptor blend using optical probes of the microstructure, Chemistry of Materials, Vol: 32, Pages: 8294-8305, ISSN: 0897-4756
The performance of photovoltaic devices based on blends of conjugated polymers with nonfullerene acceptors depends on the phase behavior and microstructure of the binary, which in turn depends on the chemical structures of the molecular components and the blend composition. We investigate the correlation between the molecular structure, composition, phase behavior, and device performance of a model system consisting of semicrystalline poly-3-hexylthiophene (P3HT) as the donor polymer and three nonfullerene acceptors, two of which (O-IDTBR/EH-IDTBR) have a planar core with different side chains and one (O-IDFBR) of which has a twisted core. We combine differential scanning calorimetry with optical measurements including UV–Vis spectroscopy, photoluminescence, spectroscopic ellipsometry, and Raman spectroscopy and photovoltaic device performance measurements, all at varying blend composition. For P3HT:IDTBR blends, the crystallinity of polymer and acceptor is preserved over a wide composition range and the blend displays a eutectic phase behavior, with the optimum solar cell composition lying close to the eutectic composition. For P3HT:IDFBR blends, increasing acceptor content disrupts the polymer crystallinity, and the optimum device composition appears to be limited by polymer connectivity rather than being linked to the eutectic composition. The optical probes allow us to probe both the crystalline and amorphous phases, clearly revealing the compositions at which component mixing disrupts crystallinity.
Cha H, Zheng Y, Dong Y, et al., 2020, Organic Solar Cells: Exciton and Charge Carrier Dynamics in Highly Crystalline PTQ10:IDIC Organic Solar Cells (Adv. Energy Mater. 38/2020), Advanced Energy Materials, Vol: 10, ISSN: 1614-6832
Lin Y, Firdaus Y, Isikgor FH, et al., 2020, Self-Assembled Monolayer Enables Hole Transport Layer-Free Organic Solar Cells with 18% Efficiency and Improved Operational Stability, ACS ENERGY LETTERS, Vol: 5, Pages: 2935-2944, ISSN: 2380-8195
- Author Web Link
- Cite
- Citations: 364
Subbiah AS, Isikgor FH, Howells CT, et al., 2020, High-Performance Perovskite Single-Junction and Textured Perovskite/Silicon Tandem Solar Cells via Slot-Die-Coating, ACS ENERGY LETTERS, Vol: 5, Pages: 3034-3040, ISSN: 2380-8195
- Author Web Link
- Cite
- Citations: 103
Nikolka M, Simatos D, Foudeh A, et al., 2020, Low-Voltage, Dual-Gate Organic Transistors with High Sensitivity and Stability toward Electrostatic Biosensing, ACS APPLIED MATERIALS & INTERFACES, Vol: 12, Pages: 40581-40589, ISSN: 1944-8244
- Author Web Link
- Cite
- Citations: 21
Salvador M, Motter CE, McCulloch I, 2020, Hidden Perils of Lead in the Lab: Guidelines for Containing, Monitoring, and Decontaminating Lead in the Context of Perovskite Research, CHEMISTRY OF MATERIALS, Vol: 32, Pages: 7141-7149, ISSN: 0897-4756
- Author Web Link
- Cite
- Citations: 2
Matta M, Wu R, Paulsen BD, et al., 2020, Ion Coordination and Chelation in a Glycolated Polymer Semiconductor: Molecular Dynamics and X-ray Fluorescence Study, CHEMISTRY OF MATERIALS, Vol: 32, Pages: 7301-7308, ISSN: 0897-4756
- Author Web Link
- Cite
- Citations: 17
Kawan M, Hidalgo TC, Du W, et al., 2020, Monitoring supported lipid bilayers with n-type organic electrochemical transistors, MATERIALS HORIZONS, Vol: 7, Pages: 2348-2358, ISSN: 2051-6347
- Author Web Link
- Cite
- Citations: 35
Wadsworth A, Hamid Z, Kosco J, et al., 2020, The Bulk Heterojunction in Organic Photovoltaic, Photodetector, and Photocatalytic Applications, ADVANCED MATERIALS, Vol: 32, ISSN: 0935-9648
- Author Web Link
- Cite
- Citations: 137
Classen A, Chochos CL, Lueer L, et al., 2020, The role of exciton lifetime for charge generation in organic solar cells at negligible energy-level offsets, NATURE ENERGY, Vol: 5, Pages: 711-719, ISSN: 2058-7546
- Author Web Link
- Cite
- Citations: 187
Moser M, Hidalgo TC, Surgailis J, et al., 2020, Side Chain Redistribution as a Strategy to Boost Organic Electrochemical Transistor Performance and Stability, ADVANCED MATERIALS, Vol: 32, ISSN: 0935-9648
- Author Web Link
- Cite
- Citations: 129
Watts KE, Neelamraju B, Moser M, et al., 2020, Thermally Induced Formation of HF<sub>4</sub>TCNQ<SUP>-</SUP> in F<sub>4</sub>TCNQ-Doped Regioregular P3HT, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, Vol: 11, Pages: 6586-6592, ISSN: 1948-7185
- Author Web Link
- Cite
- Citations: 11
Moser M, Savagian LR, Savva A, et al., 2020, Ethylene Glycol-Based Side Chain Length Engineering in Polythiophenes and its Impact on Organic Electrochemical Transistor Performance, CHEMISTRY OF MATERIALS, Vol: 32, Pages: 6618-6628, ISSN: 0897-4756
- Author Web Link
- Cite
- Citations: 70
Marsh A, Dyson MJ, Cheetham NJ, et al., 2020, Correlating the Structural and Photophysical Properties of<i>Ortho</i>,<i>Meta</i>, and<i>Para</i>-Carboranyl-Anthracene Dyads, ADVANCED ELECTRONIC MATERIALS, Vol: 6, ISSN: 2199-160X
- Author Web Link
- Cite
- Citations: 13
Zeidell AM, Filston DS, Waldrip M, et al., 2020, Large-Area Uniform Polymer Transistor Arrays on Flexible Substrates: Towards High-Throughput Sensor Fabrication, ADVANCED MATERIALS TECHNOLOGIES, Vol: 5, ISSN: 2365-709X
- Author Web Link
- Cite
- Citations: 17
Sachs M, Cha H, Kosco J, et al., 2020, Tracking charge transfer to residual metal clusters in conjugated polymers for photocatalytic hydrogen evolution, Journal of the American Chemical Society, Vol: 142, Pages: 14574-14587, ISSN: 0002-7863
Semiconducting polymers are versatile materials for solar energy conversion and have gained popularity as photocatalysts for sunlight-driven hydrogen production. Organic polymers often contain residual metal impurities such as palladium (Pd) clusters that are formed during the polymerization reaction, and there is increasing evidence for a catalytic role of such metal clusters in polymer photocatalysts. Using transient and operando optical spectroscopies on nanoparticles of F8BT, P3HT, and the dibenzo[b,d]thiophene sulfone homopolymer, P10, we demonstrate how differences in the timescale of electron transfer to Pd clusters translate into hydrogen evolution activity optima at extremely different residual Pd concentrations. For F8BT nanoparticles with common Pd concentrations of >1000 ppm (>0.1 wt. %), we find that residual Pd clusters quench photogenerated excitons via energy and electron transfer on the fs – ns timescale, thus outcompeting reductive quenching. We spectroscopically identify reduced Pd clusters in our F8BT nanoparticles from the µs timescale onwards and show that the predominant location of long-lived electrons gradually shifts to the F8BT polymer when the Pd content is lowered. While a low yield of long-lived electrons limits the hydrogen evolution activity of F8BT, P10 exhibits a substantially higher hydrogen evolution activity which we demonstrate results from higher yields of long-lived electrons due to more efficient reductive quenching. Surprisingly, and despite the higher performance of P10, long-lived electrons reside on the P10 polymer rather than on the Pd clusters in P10 particles, even at very high Pd concentrations of 27,000 ppm (2.7 wt. %). In contrast, long-lived electrons in F8BT already reside on Pd clusters before the typical timescale of hydrogen evolution. This comparison shows that P10 exhibits efficient reductive quenching but slow electron transfer to residual Pd clusters whereas the opposite is the case for F8
Cha H, Zheng Y, Dong Y, et al., 2020, Exciton and charge carrier dynamics in highly crystalline PTQ10:IDIC organic solar cells, Advanced Energy Materials, Pages: 1-11, ISSN: 1614-6832
Herein the morphology and exciton/charge carrier dynamics in bulk heterojunctions (BHJs) of the donor polymer PTQ10 and molecular acceptor IDIC are investigated. PTQ10:IDIC BHJs are shown to be particularly promising for low cost organic solar cells (OSCs). It is found that both PTQ10 and IDIC show remarkably high crystallinity in optimized BHJs, with GIWAXS data indicating pi‐pi stacking coherence lengths of up to 8 nm. Exciton‐exciton annihilation studies indicate long exciton diffusion lengths for both neat materials (19 nm for PTQ10 and 9.5 nm for IDIC), enabling efficient exciton separation with half lives of 1 and 3 ps, despite the high degree of phase segregation in this blend. Transient absorption data indicate exciton separation leads to the formation of two spectrally distinct species, assigned to interfacial charge transfer (CT) states and separated charges. CT state decay is correlated with the appearance of additional separate charges, indicating relatively efficient CT state dissociation, attributed to the high crystallinity of this blend. The results emphasize the potential for high material crystallinity to enhance charge separation and collection in OSCs, but also that long exciton diffusion lengths are likely to be essential for efficient exciton separation in such high crystallinity devices.
Melianas A, Quill TJ, LeCroy G, et al., 2020, Temperature-resilient solid-state organic artificial synapses for neuromorphic computing, SCIENCE ADVANCES, Vol: 6, ISSN: 2375-2548
- Author Web Link
- Cite
- Citations: 108
Hou L, Leydecker T, Zhang X, et al., 2020, Engineering Optically Switchable Transistors with Improved Performance by Controlling Interactions of Diarylethenes in Polymer Matrices, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 142, Pages: 11050-11059, ISSN: 0002-7863
- Author Web Link
- Cite
- Citations: 32
Yao L, Liao H, Ravva MK, et al., 2020, Metal-free polymerization: synthesis and properties of fused benzo[1,2-<i>b</i>:4,5-<i>b</i>′]bis[<i>b</i>]benzothiophene (BBBT) polymers, POLYMER CHEMISTRY, Vol: 11, Pages: 3695-3700, ISSN: 1759-9954
- Author Web Link
- Cite
- Citations: 6
Paterson AF, Savva A, Wustoni S, et al., 2020, Water stable molecular n-doping produces organic electrochemical transistors with high transconductance and record stability, NATURE COMMUNICATIONS, Vol: 11, ISSN: 2041-1723
- Author Web Link
- Cite
- Citations: 73
This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.