1,092 results match your criteria solution processable


Triptycene End-Capping as Strategy in Materials Chemistry to Control Crystal Packing and Increase Solubility.

Chem Rec 2021 Mar 7;21(3):558-573. Epub 2021 Jan 7.

Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im NeuenheimerFeld 270, 69120, Heidelberg, Germany.

In materials chemistry of polycyclic aromatic compounds (PACs) the kind of aggregation and the spatial arrangement of the π-planes are of utmost importance, e. g. for charge transport properties. Read More

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Rapid and Reliable Formation of Highly Densified Bilayer Oxide Dielectrics on Silicon Substrates via DUV Photoactivation for Low-Voltage Solution-Processed Oxide Thin-Film Transistors.

ACS Appl Mater Interfaces 2021 Jan 6;13(2):2820-2828. Epub 2021 Jan 6.

School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Republic of Korea.

In this research, we report the rapid and reliable formation of high-performance nanoscale bilayer oxide dielectrics on silicon substrates via low-temperature deep ultraviolet (DUV) photoactivation. The optical analysis of sol-gel aluminum oxide films prepared at various concentrations reveals the processable film thickness with DUV photoactivation and its possible generalization to the formation of various metal oxide films on silicon substrates. The physicochemical and electrical characterizations confirm that DUV photoactivation accelerates the efficient formation of a highly dense aluminum oxide and aluminum silicate bilayer (17 nm) on heavily doped silicon at 150 °C within 5 min owing to the efficient thermal conduction on silicon, resulting in excellent dielectric properties in terms of low leakage current (∼10 A/cm at 1. Read More

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January 2021

Capacitive Pressure Sensors Containing Reliefs on Solution-Processable Hydrogel Electrodes.

ACS Appl Mater Interfaces 2021 Jan 5;13(1):1441-1451. Epub 2021 Jan 5.

Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, P. R. China.

Highly sensitive capacitive-type pressure sensor has been achieved by fabricating reliefs on solution-processable hydrogel electrodes. Hybrid PVA/PANI hydrogels (PVA, poly(vinyl alcohol); PANI, polyaniline) with a fully physically cross-linked binary network are selected as the electrodes of the pressure sensors. On the basis of the solution processability, reliefs are fabricated on the surface of PVA/PANI hydrogel electrodes by a template method. Read More

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January 2021

Inkjet Printing of an Electron Injection Layer: New Role of Cesium Carbonate Interlayer in Polymer OLEDs.

Polymers (Basel) 2020 Dec 28;13(1). Epub 2020 Dec 28.

Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, 90-924 Lodz, Poland.

Among solution-processable techniques, inkjet printing is a potential method for manufacturing low-cost and high-resolution polymer organic light-emitting diodes (PLEDs) for displays/solid-state lighting applications. Herein, we demonstrate use of the inkjet printed cesium carbonate (CsCO) film as an electron injection interlayer. We have elaborated the CsCO ink using an alcohol-based solvent for the industrial-grade printhead. Read More

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December 2020

Thin-Film Engineering of Solution-Processable n-Type Silicon Phthalocyanines for Organic Thin-Film Transistors.

ACS Appl Mater Interfaces 2021 Jan 28;13(1):1008-1020. Epub 2020 Dec 28.

Department of Chemical and Biological Engineering, University of Ottawa, 161 Louis Pasteur, Ottawa, ON, Canada K1N 6N5.

Metal and metalloid phthalocyanines are an abundant and established class of materials widely used in the dye and pigment industry as well as in commercial photoreceptors. Silicon phthalocyanines (SiPcs) are among the highest-performing n-type semiconductor materials in this family when used in organic thin-film transistors (OTFTs) as their performance and solid-state arrangement are often increased through axial substitution. Herein, we study eight axially substituted SiPcs and their integration into solution-processed n-type OTFTs. Read More

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January 2021

Intrinsically Porous Molecular Materials (IPMs) for Natural Gas and Benzene Derivatives Separations.

Acc Chem Res 2021 Jan 17;54(1):155-168. Epub 2020 Dec 17.

Smart Hybrid Materials Laboratory (SHMs), Advanced Membranes and Porous Materials Center, Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia.

ConspectusSeparating and purifying chemicals without heat would go a long way toward reducing the overall energy consumption and the harmful environmental footprint of the process. Molecular separation processes are critical for the production of raw materials, commodity chemicals, and specialty fuels. Over 50% of the energy used in the production of these materials is spent on separation and purification processes, which primarily includes vacuum and cryogenic distillations. Read More

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January 2021

Picene and PTCDI based solution processable ambipolar OFETs.

Sci Rep 2020 Dec 16;10(1):22029. Epub 2020 Dec 16.

Department of Chemistry, Central University of Tamil Nadu, Thiruvarur, 610 005, India.

Facile and efficient solution-processed bottom gate top contact organic field-effect transistor was fabricated by employing the active layer of picene (donor, D) and N,N'-di(dodecyl)-perylene-3,4,9,10-tetracarboxylic diimide (acceptor, A). Balanced hole (0.12 cm/Vs) and electron (0. Read More

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December 2020

A High-Performance Lithium Metal Battery with Ion-Selective Nanofluidic Transport in a Conjugated Microporous Polymer Protective Layer.

Adv Mater 2021 Feb 16;33(5):e2006323. Epub 2020 Dec 16.

Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.

Lithium metal is the "holy grail" of anodes, capable of unlocking the full potential of cathodes in next-generation batteries. However, the use of pure lithium anodes faces several challenges in terms of safety, cycle life, and rate capability. Herein, a solution-processable conjugated microporous thermosetting polymer (CMP) is developed. Read More

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February 2021

Bis-Tridendate Ir(III) Polymer-Metallocomplexes: Hybrid, Main-Chain Polymer Phosphors for Orange-Red Light Emission.

Polymers (Basel) 2020 Dec 13;12(12). Epub 2020 Dec 13.

Department of Chemistry, University of Patras, University Campus Rio-Patras, GR26504 Patras, Greece.

In this work, hybrid polymeric bis-tridentate iridium(III) complexes bearing derivatives of terpyridine (tpy) and 2,6-di(phenyl) pyridine as ligands were successfully synthesized and evaluated as red-light emitters. At first, the synthesis of small molecular bis-tridendate Ir(III) complexes bearing alkoxy-, methyl-, or hydroxy-functionalized terpyridines and a dihydroxyphenyl-pyridine moiety was accomplished. Molecular complexes bearing two polymerizable end-hydroxyl groups and methyl- or alkoxy-decorated terpyridines were copolymerized with difluorodiphenyl-sulphone under high temperature polyetherification conditions. Read More

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December 2020

One-Step Sixfold Cyanation of Benzothiadiazole Acceptor Units for Air-Stable High-Performance n-Type Organic Field-Effect Transistors.

Angew Chem Int Ed Engl 2021 Mar 28;60(11):5970-5977. Epub 2021 Jan 28.

Department of Chemistry and Centre for Processable Electronics, Imperial College London, London, W12 0BZ, UK.

Reported here is a new high electron affinity acceptor end group for organic semiconductors, 2,1,3-benzothiadiazole-4,5,6-tricarbonitrile (TCNBT). An n-type organic semiconductor with an indacenodithiophene (IDT) core and TCNBT end groups was synthesized by a sixfold nucleophilic substitution with cyanide on a fluorinated precursor, itself prepared by a direct arylation approach. This one-step chemical modification significantly impacted the molecular properties: the fluorinated precursor, TFBT IDT, a poor ambipolar semiconductor, was converted into TCNBT IDT, a good n-type semiconductor. Read More

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Control of Molecular Orientation in Organic Semiconductors Using Weak Iodine-Iodine Interactions.

J Phys Chem Lett 2021 Jan 14;12(1):111-116. Epub 2020 Dec 14.

Graduate School of Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan.

Controlling the molecular orientation of materials is a key issue for improving the performance of organic semiconductor devices. Herein, we demonstrate the structure-property relationships of iodinated and noniodinated molecules based on an asymmetric thienoacene framework. The noniodinated molecule formed an antiparallel slip-stack structure with small orbital overlap between molecules. Read More

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January 2021

Accessing water processable cyanido bridged chiral heterobimetallic Co(ii)-Fe(iii) one dimensional network.

Chem Commun (Camb) 2021 Jan 10;57(2):207-210. Epub 2020 Dec 10.

Department of Chemical Sciences, Tezpur University, Napaam-784028, Sonitpur, Assam, India.

A water processable cyanido bridged extended chiral heterobimetallic Co(ii)-Fe(iii) network is assembled. The unusual water processability of the coordination polymer originates from dangling hydrophilic substituents. The present approach offers a simple route to impart solution processability to cyanido bridged molecular magnetic materials. Read More

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January 2021

Sand-Milling Fabrication of Screen-Printable Graphene Composite Inks for High-Performance Planar Micro-Supercapacitors.

ACS Appl Mater Interfaces 2020 Dec 6;12(50):56319-56329. Epub 2020 Dec 6.

Graphene Institute of Lanzhou University-Fangda Carbon, MOE Key Laboratory for Magnetism and Magnetic Materials, Key Laboratory of Special Function Materials and Structure Design of Ministry of Education, Lanzhou University, Lanzhou 730000, China.

Rational engineering and simplified production of printable graphene inks are essential for building high-energy and flexible graphene micro-supercapacitors (MSCs). However, few graphene-based MSCs show impressive areal capacitance and energy density, especially based on additive-manufacturing, cost-effective, and printable inks. Herein, a new-style and solution-processable graphene composite ink is ingeniously formulated for scalable screen printing MSCs. Read More

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December 2020

Excited state dynamics and exciton diffusion in triphenylamine/dicyanovinyl push-pull small molecule for organic optoelectronics.

Sci Rep 2020 Dec 3;10(1):21198. Epub 2020 Dec 3.

Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, the Netherlands.

Triphenylamine-based small push-pull molecules have recently attracted substantial research attention due to their unique optoelectronic properties. Here, we investigate the excited state de-excitation dynamics and exciton diffusion in TPA-T-DCV-Ph-F small molecule, having simple chemical structure with asymmetrical architecture and end-capped with electron-withdrawing p-fluorodicyanovinyl group. The excited state lifetime in diluted solutions (0. Read More

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December 2020

A Solution Processable Dithioalkyl Dithienothiophene (DSDTT) Based Small Molecule and Its Blends for High Performance Organic Field Effect Transistors.

ACS Nano 2021 Jan 30;15(1):727-738. Epub 2020 Nov 30.

Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States.

The 3,5-dithiooctyl dithienothiophene based small molecular semiconductor (), end functionalized with fused dithienothiophene () units, was synthesized and characterized for organic field effect transistors (OFET). The thermal, optical, electrochemical, and computed electronic structural properties of were investigated and contrasted. The single crystal structure of reveals the presence of intramolecular locks between S(alkyl)···S(thiophene), with a very short S-S distance of 3. Read More

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January 2021

Persistent Conjugated Backbone and Disordered Lamellar Packing Impart Polymers with Efficient n-Doping and High Conductivities.

Adv Mater 2021 Jan 30;33(2):e2005946. Epub 2020 Nov 30.

Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Center of Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China.

Solution-processable highly conductive polymers are of great interest in emerging electronic applications. For p-doped polymers, conductivities as high a nearly 10 S cm have been reported. In the case of n-doped polymers, they often fall well short of the high values noted above, which might be achievable, if much higher charge-carrier mobilities determined could be realized in combination with high charge-carrier densities. Read More

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January 2021

Wetting-Induced Fabrication of Graphene Hybrid with Conducting Polymers for High-Performance Flexible Transparent Electrodes.

ACS Appl Mater Interfaces 2020 Dec 25;12(49):55372-55381. Epub 2020 Nov 25.

Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.

Graphene has attracted extensive attention for the supply of electrically conductive, optically transparent, and mechanical robust electrodes for flexible optoelectrical devices, as an alternative to commercial indium tin oxide, due to its superior mechanical, electrical, and optical properties. However, conventional chemical vapor deposition is impeded by harsh conditions and complicated processes, and it is still a challenge to fabricate high-performance graphene transparent electrode in a facile and scalable solution-processable route. Herein, a wetting-induced scalable solution-processable approach to fabricate graphene hybrid with conductive ionogel and poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), i. Read More

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December 2020

Fabrication and chemical lift-off of sub-micron scale III-nitride LED structures.

Opt Express 2020 Nov;28(23):35038-35046

Nanoscale light emitting diodes (nanoLEDs, diameter < 1 µm), with active and sacrificial multi-quantum well (MQW) layers epitaxially grown via metal organic chemical vapor deposition, were fabricated and released into solution using a combination of colloidal lithography and photoelectrochemical (PEC) etching of the sacrificial MQW layer. PEC etch conditions were optimized to minimize undercut roughness, and thus limit damage to the active MQW layer. NanoLED emission was blue-shifted ∼10 nm from as-grown (unpatterned) LED material, hinting at strain relaxation in the active InGaN MQW layer. Read More

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November 2020

Quantifying Exciton Heterogeneities in Mixed-Phase Organometal Halide Multiple Quantum Wells via Stark Spectroscopy Studies.

ACS Appl Mater Interfaces 2020 Nov 12;12(47):52538-52548. Epub 2020 Nov 12.

Department of Chemistry, University of Utah, Salt Lake City, Utah 84112, United States.

Solution-processable two-dimensional (2D) organic-inorganic hybrid perovskite (OIHP) quantum wells naturally self-assemble through weak van der Waals forces. In this study, we investigate the structural and optoelectronic properties of 2D-layered butylammonium (CHNH, BA) methylammonium (CHNH, MA) lead iodide, (BA)(MA)PbI quantum wells with varying from 1 to 4. Through conventional structural characterization, (BA)(MA)PbI thin films showcase high-quality phase () purity. Read More

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November 2020

On the Colloidal Stability of PbS Quantum Dots Capped with Methylammonium Lead Iodide Ligands.

ACS Appl Mater Interfaces 2020 Nov 11;12(47):52959-52966. Epub 2020 Nov 11.

Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands.

Phase-transfer exchange of pristine organic ligands for inorganic ones is essential for the integration of colloidal quantum dots (CQDs) in optoelectronic devices. This method results in a colloidal dispersion (ink) which can be directly deposited by various solution-processable techniques to fabricate conductive films. For PbS CQDs capped with methylammonium lead iodide ligands (MAPbI), the most commonly employed solvent is butylamine, which enables only a short-term (hours) colloidal stability and thus brings concerns on the possibility of manufacturing CQD devices on a large scale in a reproducible manner. Read More

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November 2020

17% Non-Fullerene Organic Solar Cells with Annealing-Free Aqueous MoO .

Adv Sci (Weinh) 2020 Nov 21;7(21):2002395. Epub 2020 Sep 21.

Department of Physics and Energy Harvest Storage Research Center (EHSRC) University of Ulsan Ulsan 44610 Republic of Korea.

A charge transport layer based on transition metal-oxides prepared by an anhydrous sol-gel method normally requires high-temperature annealing to achieve the desired quality. Although annealing is not a difficult process in the laboratory, it is definitely not a simple process in mass production, such as roll-to-roll, because of the inevitable long cooling step that follows. Therefore, the development of an annealing-free solution-processable metal-oxide is essential for the large-scale commercialization. Read More

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November 2020

Panchromatically Responsive Organic Photodiodes utilizing a Noninvasive Narrowband Color Electrode.

ACS Appl Mater Interfaces 2020 Nov 11;12(47):53012-53020. Epub 2020 Nov 11.

Department of Chemistry and Nanoscience, Ewha Womans University, Seoul 03760, Korea.

Organic photodiodes (OPDs) are emerging as potential candidates in image sensors owing to their high sensitivity and submicron photoactive layer thickness. For OPDs to be more competitive, it is necessary to develop an economical fabrication process and improve their narrowband spectral response from visible to near-infrared (NIR). In this study, panchromatic OPDs with a remarkable narrowband response from visible to NIR are developed by integrating a solution-processed optical filter-electrode (OF-electrode) and a panchromatic organic photoactive layer. Read More

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November 2020

Quantitative Electrochemical Control over Optical Gain in Quantum-Dot Solids.

ACS Nano 2021 Jan 10;15(1):377-386. Epub 2020 Nov 10.

Optoelectronic Materials Section, Faculty of Applied Sciences, Delft University of Technology, Van der Maasweg 9, Delft 2629 HAZ, The Netherlands.

Solution-processed quantum dot (QD) lasers are one of the holy grails of nanoscience. They are not yet commercialized because the lasing threshold is too high: one needs >1 exciton per QD, which is difficult to achieve because of fast nonradiative Auger recombination. The threshold can, however, be reduced by electronic doping of the QDs, which decreases the absorption near the band-edge, such that the stimulated emission (SE) can easily outcompete absorption. Read More

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January 2021

Solution-Processable 2D Polymer/Graphene Oxide Heterostructure for Intrinsic Low-Current Memory Device.

ACS Appl Mater Interfaces 2020 Nov 8;12(46):51729-51735. Epub 2020 Nov 8.

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China.

Suppressing the operating current in resistive memory devices is an effective strategy to minimize their power consumption. Herein, we present an intrinsic low-current memory based on two-dimensional (2D) hybrid heterostructures consisting of partly reduced graphene oxide (p-rGO) and conjugated microporous polymer (CMP) with the merits of being solution-processed, large-scale, and well patterned. The device with the heterostructure of p-rGO/CMP sandwiched between highly reduced graphene oxide (h-rGO) and aluminum electrodes exhibited rewritable and nonvolatile memory behavior with an ultralow operating current (∼1 μA) and efficient power consumption (∼2. Read More

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November 2020

Solid cyclooctatetraene-based triplet quencher demonstrating excellent suppression of singlet-triplet annihilation in optical and electrical excitation.

Nat Commun 2020 Nov 6;11(1):5623. Epub 2020 Nov 6.

Centre for Organic Photonics & Electronics, The University of Queensland, Brisbane, QLD 4072, Australia.

Triplet excitons have been identified as the major obstacle to the realisation of organic laser diodes, as accumulation of triplet excitons leads to significant losses under continuous wave (CW) operation and/or electrical excitation. Here, we report the design and synthesis of a solid-state organic triplet quencher, as well as in-depth studies of its dispersion into a solution processable bis-stilbene-based laser dye. By blending the laser dye with 20 wt% of the quencher, negligible effects on the ASE thresholds, but a complete suppression of singlet-triplet annihilation (STA) and a 20-fold increase in excited-state photostability of the laser dye under CW excitation, were achieved. Read More

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November 2020

Alternative Organic Spacers for More Efficient Perovskite Solar Cells Containing Ruddlesden-Popper Phases.

J Am Chem Soc 2020 Nov 4;142(46):19705-19714. Epub 2020 Nov 4.

Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, School of Electronic and Information Engineering, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an 710049, P. R. China.

The halide perovskite Ruddlesden-Popper (RP) phases are a homologous layered subclass of solution-processable semiconductors that have aroused great attention, especially for developing long-term solar photovoltaics. They are defined as (A')(A)PbX (A' = spacer cation, A = cage cation, and X = halide anion). The orientation control of low-temperature self-assembled thin films is a fundamental issue associated with the ability to control the charge carrier transport perpendicular to the substrate. Read More

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November 2020

Masking specific effects of ionic liquid constituents at the solid-liquid interface by surface functionalization.

Phys Chem Chem Phys 2020 Nov;22(42):24764-24770

MTA-SZTE Lendület Biocolloids Research Group, Interdisciplinary Excellence Centre, Department of Physical Chemistry and Materials Science, University of Szeged, H-6720 Szeged, Hungary.

Ion specific effects of ionic liquid (IL) constituents on the surface charge and aggregation properties of two types of particles (positively charged amidine (AL) and polyimidazolium-functionalized sulfate (SL-IP-2) latexes) were investigated in IL solutions containing different anions and the 1-butyl-3-methylimidazolium cation. For the AL systems, the affinity of IL anions to the particle surface followed the sequence chloride < bromide < nitrate < acetate. The critical coagulation concentration values decreased in the same order indicating that ion specific adsorption determines the surface charge density and the extent of the repulsive interparticle forces. Read More

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November 2020

Metamaterial Enhancement of Metal-Halide Perovskite Luminescence.

Nano Lett 2020 Nov 22;20(11):7906-7911. Epub 2020 Oct 22.

Centre for Disruptive Photonic Technologies, TPI, SPMS, Nanyang Technological University, 21 Nanyang Link, Singapore 637371.

Metal-halide perovskites are rapidly emerging as solution-processable optical materials for light-emitting applications. Here, we adopt a plasmonic metamaterial approach to enhance photoluminescence emission and extraction of methylammonium lead iodide (MAPbI) thin films based on the Purcell effect. We show that hybridization of the active metal-halide film with resonant nanoscale sized slits carved into a gold film can yield more than 1 order of magnitude enhancement of luminescence intensity and nearly 3-fold reduction of luminescence lifetime corresponding to a Purcell enhancement factor of more than 300. Read More

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November 2020

Exfoliation and Defect Control of Two-Dimensional Few-Layer MXene TiCT for Electromagnetic Interference Shielding Coatings.

ACS Appl Mater Interfaces 2020 Nov 21;12(44):49737-49747. Epub 2020 Oct 21.

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.

Defect-controlled exfoliation of few-layer transition-metal carbide (-TiCT) MXene was demonstrated by optimizing chemical etching conditions, and electromagnetic interference (EMI) shielding coatings were explored. The structural features such as layer morphology, lateral size, layer thickness, defect density, and mechanical stability of the exfoliated -TiCT were strongly dependent on exfoliation conditions. By selecting appropriate exfoliation conditions, moderate etching time leads to the formation of quality -TiCT with lesser defects, whereas longer etching time can break the layer structure and increase defect density, structural misalignment, and oxidative products of -TiCT. Read More

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November 2020

Solution-processable integrated CMOS circuits based on colloidal CuInSe quantum dots.

Nat Commun 2020 Oct 19;11(1):5280. Epub 2020 Oct 19.

Chemistry Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.

The emerging technology of colloidal quantum dot electronics provides an opportunity for combining the advantages of well-understood inorganic semiconductors with the chemical processability of molecular systems. So far, most research on quantum dot electronic devices has focused on materials based on Pb- and Cd chalcogenides. In addition to environmental concerns associated with the presence of toxic metals, these quantum dots are not well suited for applications in CMOS circuits due to difficulties in integrating complementary n- and p-channel transistors in a common quantum dot active layer. Read More

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October 2020