Publications
509 results found
Zhou L, Cao Z, Wahyudi W, et al., 2020, Electrolyte Engineering Enables High Stability and Capacity Alloying Anodes for Sodium and Potassium Ion Batteries, ACS ENERGY LETTERS, Vol: 5, Pages: 766-776, ISSN: 2380-8195
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- Citations: 113
Zheng X, Yuan S, Liu J, et al., 2020, Chlorine Vacancy Passivation in Mixed Halide Perovskite Quantum Dots by Organic Pseudohalides Enables Efficient Rec. 2020 Blue Light-Emitting Diodes, ACS ENERGY LETTERS, Vol: 5, Pages: 793-798, ISSN: 2380-8195
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- Citations: 175
Barrit D, Cheng P, Darabi K, et al., 2020, Room-Temperature Partial Conversion of α-FAPbI<sub>3</sub> Perovskite Phase via PbI<sub>2</sub> Solvation Enables High-Performance Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 30, ISSN: 1616-301X
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- Citations: 37
He Q, Shahid M, Jiao X, et al., 2020, The crucial role of fluorine in fully alkylated ladder type carbazole based non-fullerene organic solar cells, ACS Applied Materials and Interfaces, Vol: 12, Pages: 9555-9562, ISSN: 1944-8244
Two fused ladder type non-fullerene acceptors, DTCCIC and DTCCIC-4F, based on an electron-donating alkylated dithienocyclopentacarbazole core flanked by electron-withdrawing non-fluorinated or fluorinated 1,1-dicyanomethylene-3-indanone (IC or IC-4F), are prepared and utilized in organic solar cells (OSCs). The two new molecules reveal planar structures and strong aggregation behavior, and fluorination is shown to red shift the optical band gap and down shift energy levels. OSCs based on DTCCIC-4F exhibit a power conversion efficiency of 12.6 %, much higher than that of DTCCIC based devices (6.2 %). Microstructural studies reveal that while both acceptors are highly crystalline, bulk heterojunction blends based on the non-fluorinated DTCCIC result in overly coarse domains, while blends based on the fluorinated DTCCIC-4F exhibit a more optimal nanoscale morphology. These results highlight the importance of end group fluorination in controlling molecular aggregation and miscibility.
Zheng X, Hou Y, Bao C, et al., 2020, Managing grains and interfaces via ligand anchoring enables 22.3%-efficiency inverted perovskite solar cells, NATURE ENERGY, Vol: 5, Pages: 131-140, ISSN: 2058-7546
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- Citations: 762
Georgiadou DG, Lin Y, Lim J, et al., 2020, High Responsivity and Response Speed Single‐Layer Mixed‐Cation Lead Mixed‐Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large‐Area Rigid and Flexible Substrates, Advanced Functional Materials, Vol: 30, Pages: 1909758-1909758, ISSN: 1616-301X
Tang M-C, Fan Y, Barrit D, et al., 2020, Ambient blade coating of mixed cation, mixed halide perovskites without dripping: <i>in situ</i> investigation and highly efficient solar cells, Publisher: ROYAL SOC CHEMISTRY, Pages: 1095-1104, ISSN: 2050-7488
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- Citations: 60
Firdaus Y, He Q, Lin Y, et al., 2020, Novel wide-bandgap non-fullerene acceptors for efficient tandem organic solar cells, Publisher: ROYAL SOC CHEMISTRY, Pages: 1164-1175, ISSN: 2050-7488
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- Citations: 35
Wadsworth A, Chen H, Thorley KJ, et al., 2020, Modification of Indacenodithiophene-Based Polymers and Its Impact on Charge Carrier Mobility in Organic Thin-Film Transistors, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 142, Pages: 652-664, ISSN: 0002-7863
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- Citations: 84
Hallani RK, Moser M, Bristow H, et al., 2020, Low-Temperature Cross-Linking Benzocyclobutene Based Polymer Dielectric for Organic Thin Film Transistors on Plastic Substrates, JOURNAL OF ORGANIC CHEMISTRY, Vol: 85, Pages: 277-283, ISSN: 0022-3263
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- Citations: 13
Troughton J, Neophytou M, Gasparini N, et al., 2020, A universal solution processed interfacial bilayer enabling ohmic contact in organic and hybrid optoelectronic devices, ENERGY & ENVIRONMENTAL SCIENCE, Vol: 13, Pages: 268-276, ISSN: 1754-5692
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- Citations: 36
Chaudhry MU, Panidi J, Nam S, et al., 2020, Polymer Light-Emitting Transistors With Charge-Carrier Mobilities Exceeding 1 cm<SUP>2</SUP> V<SUP>-1</SUP> s<SUP>-1</SUP>, ADVANCED ELECTRONIC MATERIALS, Vol: 6, ISSN: 2199-160X
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- Citations: 8
Firdaus Y, Anthopoulos TD, 2020, DEVICE PHYSICS IN ORGANIC SOLAR CELLS AND DRIFT-DIFFUSION SIMULATIONS, SOFT-MATTER THIN FILM SOLAR CELLS, Editors: Ren, Kan, Publisher: AMER INST PHYSICS, ISBN: 978-0-7354-2238-4
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- Citations: 2
Kumar M, Georgiadou DG, Seitkhan A, et al., 2019, Colossal Tunneling Electroresistance in Co-Planar Polymer Ferroelectric Tunnel Junctions, ADVANCED ELECTRONIC MATERIALS, ISSN: 2199-160X
Costa JC, Pouryazdan A, Panidi J, et al., 2019, Flexible IGZO TFTs and their suitability for space applications, IEEE Journal of the Electron Devices Society, Vol: 7, Pages: 1182-1190, ISSN: 2168-6734
In this paper, low earth orbit radiation (LEO), temperature, and magnetic field conditions are mimicked to investigate the suitability of flexible InGaZnO transistors for lightweight space wearables. More specifically, the impacts of high energetic electron irradiation with fluences up to 10 12 e - /cm 2 , low operating temperatures down to 78 K and magnetic fields up to 11 mT are investigated. This simulates 278 h in LEO. The threshold voltage and mobility of transistors that were exposed to e - irradiation are found to shift by +(0.09 ± 0.05) V and -(0.6 ± 0.5) cm 2 V -1 s -1 . Subsequent low temperature exposure resulted in additional shifts of +0.38 V and -5.95 cm 2 V -1 s -1 for the same parameters. These values are larger than the ones obtained from non-irradiated reference samples. Conversely, the performance of the devices was observed not to be significantly affected by the magnetic fields. Finally, a Cascode amplifier presenting a voltage gain of 10.3 dB and a cutoff frequency of 1.2 kHz is demonstrated after the sample had been irradiated, cooled down, and exposed to the magnetic fields. If these notions are considered during the systems design, these devices can be used to unobtrusively integrate sensor systems into space suits.
Seitkhan A, Neophytou M, Kirkus M, et al., 2019, Use of the Phen-NaDPO:Sn(SCN)<sub>2</sub> Blend as Electron Transport Layer Results to Consistent Efficiency Improvements in Organic and Hybrid Perovskite Solar Cells, ADVANCED FUNCTIONAL MATERIALS, Vol: 29, ISSN: 1616-301X
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- Citations: 39
Nam S, Chaudhry MU, Tetzner K, et al., 2019, Efficient and Stable Solution-Processed Organic Light-Emitting Transistors Using a High-<i>k</i> Dielectric, ACS PHOTONICS, Vol: 6, Pages: 3159-3165, ISSN: 2330-4022
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- Citations: 11
Lin Y-H, Li W, Faber H, et al., 2019, Hybrid organic-metal oxide multilayer channel transistors with high operational stability, NATURE ELECTRONICS, Vol: 2, Pages: 587-595, ISSN: 2520-1131
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- Citations: 40
Chen H, Wadsworth A, Ma C, et al., 2019, The Effect of Ring Expansion in Thienobenzo[<i>b</i>]indacenodithiophene Polymers for Organic Field-Effect Transistors, JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 141, Pages: 18806-18813, ISSN: 0002-7863
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- Citations: 38
Han A, Aljarb A, Liu S, et al., 2019, Growth of 2H stacked WSe<sub>2</sub> bilayers on sapphire, NANOSCALE HORIZONS, Vol: 4, Pages: 1434-1442, ISSN: 2055-6756
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- Citations: 16
Neophytou M, De Bastiani M, Gasparini N, et al., 2019, Enhancing the Charge Extraction and Stability of Perovskite Solar Cells Using Strontium Titanate (SrTiO<sub>3</sub>) Electron Transport Layer, ACS APPLIED ENERGY MATERIALS, Vol: 2, Pages: 8090-8097, ISSN: 2574-0962
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- Citations: 42
Faber H, Anthopoulos TD, 2019, Adding a new layer to 'more than Moore', NATURE ELECTRONICS, Vol: 2, Pages: 497-498, ISSN: 2520-1131
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- Citations: 7
Lin Y, Adilbekova B, Firdaus Y, et al., 2019, 17% Efficient Organic Solar Cells Based on Liquid Exfoliated WS<sub>2</sub> as a Replacement for PEDOT:PSS, ADVANCED MATERIALS, Vol: 31, ISSN: 0935-9648
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- Citations: 464
Barrit D, Cheng P, Tang M-C, et al., 2019, Impact of the Solvation State of Lead Iodide on Its Two-Step Conversion to MAPbI<sub>3</sub>: An In Situ Investigation, ADVANCED FUNCTIONAL MATERIALS, Vol: 29, ISSN: 1616-301X
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- Citations: 41
Li Z, Li H, Jiang K, et al., 2019, Self-Powered Perovskite/CdS Heterostructure Photodetectors, ACS APPLIED MATERIALS & INTERFACES, Vol: 11, Pages: 40204-40213, ISSN: 1944-8244
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- Citations: 51
He Q, Shahid M, Wu J, et al., 2019, Fused Cyclopentadithienothiophene acceptor enables ultrahigh short‐circuit current and high efficiency >11% in as‐cast organic solar cells, Advanced Functional Materials, Vol: 29, Pages: 1-7, ISSN: 1616-301X
A new method to synthesize an electron‐rich building block cyclopentadithienothiophene (9H‐thieno‐[3,2‐b]thieno[2″,3″:4′,5′]thieno[2′,3′:3,4]cyclopenta[1,2‐d]thiophene, CDTT) via a facile aromatic extension strategy is reported. By combining CDTT with 1,1‐dicyanomethylene‐3‐indanone endgroups, a promising nonfullerene small molecule acceptor (CDTTIC) is prepared. As‐cast, single‐junction nonfullerene organic solar cells based on PFBDB‐T: CDTTIC blends exhibit very high short‐circuit currents up to 26.2 mA cm−2 in combination with power conversion efficiencies over 11% without any additional processing treatments. The high photocurrent results from the near‐infrared absorption of the CDTTIC acceptor and the well‐intermixed blend morphology of polymer donor PFBDB‐T and CDTTIC. This work demonstrates a useful fused ring extension strategy and promising solar cell results, indicating the great potential of the CDTT derivatives as electron‐rich building blocks for constructing high‐performance small molecule acceptors in organic solar cells.
Lin Y-H, Huang W, Pattanasattayavong P, et al., 2019, Deciphering photocarrier dynamics for tuneable high-performance perovskite-organic semiconductor heterojunction phototransistors, NATURE COMMUNICATIONS, Vol: 10, ISSN: 2041-1723
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- Citations: 43
Ray S, Panidi J, Mukhopadhay T, et al., 2019, Electrochemical stability and ambipolar charge transport in diketopyrrolopyrrole-based organic materials, ACS Applied Electronic Materials, Vol: 1, Pages: 2037-2046, ISSN: 2637-6113
An important strategy for realizing flexible complementary circuits with organic semiconductors is to achieve balanced ambipolar charge transport properties with reduced anisotropy. Here, we present a series of star-shaped diketopyrrolopyrrole (DPP)-based organic materials synthesized for improved intermolecular charge transport while retaining the ambipolar charge transport properties of their linear counterparts. Steady-state UV–visible spectroscopic studies confirm that the oligomers are highly aggregated in the thin film as evidenced from appearance of prominent vibronic features and red-shifted absorption bands. Ambipolar transport properties of these materials were verified in organic field-effect transistors (OFETs). The results show that the star-shaped DPP systems have the potential to outperform their linear counterparts in devices.
Anthopoulos TD, 2019, Ultrathin channels make transistors go faster, NATURE MATERIALS, Vol: 18, Pages: 1033-1034, ISSN: 1476-1122
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- Citations: 3
Karuthedath S, Firdaus Y, Liang R-Z, et al., 2019, Impact of Fullerene on the Photophysics of Ternary Small Molecule Organic Solar Cells, ADVANCED ENERGY MATERIALS, Vol: 9, ISSN: 1614-6832
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- Citations: 35
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