Multi wall carbon nanotubes as a top electrode for perovskite light-emitting electrochemical cells

Abstract Carbon nanotubes are promising materials for use as flexible and transparent electrodes for a wide variety of optoelectronic devices like solar cells and light-emitting diodes. Moreover, the chemical inertness of carbon nanotubes matches with the operation of light-emitting electrochemical cells where ion migration is a main working principle especially based on halide perovskite, in which ions corrode metal electrodes. Here we demonstrate how the removal of synthesis residuals via synthesis enables the use of multiwall carbon nanotubes as a transparent electrode.

Download Full-text

Improvement in performance of organic light-emitting devices by inclusion of multi-wall carbon nanotubes

Journal of Luminescence ◽

10.1016/j.jlumin.2006.10.006 ◽

2007 ◽

Vol 126 (2) ◽

pp. 602-606 ◽

Cited By ~ 14

Author(s):

Guang-Feng Wang ◽

Xiao-Ming Tao ◽

Wei Chen ◽

Rong-Xin Wang ◽

An Yang

Keyword(s):

Carbon Nanotubes ◽

Light Emitting ◽

Multi Wall Carbon Nanotubes ◽

Light Emitting Devices ◽

Organic Light ◽

Organic Light Emitting Devices

Download Full-text

Light-Emitting Electrochemical Cells of Single Crystal Hybrid Halide Perovskite with Vertically Aligned Carbon Nanotubes Contacts

ACS Photonics ◽

10.1021/acsphotonics.8b01653 ◽

2019 ◽

Vol 6 (4) ◽

pp. 967-975 ◽

Cited By ~ 24

Author(s):

Pavao Andričević ◽

Xavier Mettan ◽

Márton Kollár ◽

Bálint Náfrádi ◽

Andrzej Sienkiewicz ◽

...

Keyword(s):

Carbon Nanotubes ◽

Single Crystal ◽

Electrochemical Cells ◽

Light Emitting ◽

Vertically Aligned Carbon Nanotubes ◽

Aligned Carbon Nanotubes ◽

Vertically Aligned ◽

Halide Perovskite

Download Full-text

Organic light emitting diodes based on multi-wall carbon nanotubes (MWNTs) modified electrode

Journal of Materials Science ◽

10.1023/b:jmsc.0000030736.85726.b4 ◽

2004 ◽

Vol 39 (11) ◽

pp. 3777-3778 ◽

Cited By ~ 5

Author(s):

Mujie Yang ◽

Qinghui Zhang

Keyword(s):

Carbon Nanotubes ◽

Modified Electrode ◽

Light Emitting Diodes ◽

Organic Light Emitting Diodes ◽

Light Emitting ◽

Multi Wall Carbon Nanotubes ◽

Organic Light

Download Full-text

Removal of heavy metals from water using multistage functionalized multiwall carbon nanotubes

Journal of the Serbian Chemical Society ◽

10.2298/jsc170422066b ◽

2017 ◽

Vol 82 (10) ◽

pp. 1175-1191 ◽

Cited By ~ 4

Author(s):

Dragoslav Budimirovic ◽

Zlate Velickovic ◽

Zoran Bajic ◽

Dragana Milosevic ◽

Jasmina Nikolic ◽

...

Keyword(s):

Carbon Nanotubes ◽

Multiwall Carbon Nanotubes ◽

Ion Concentration ◽

Order Kinetic ◽

Multi Wall Carbon Nanotubes ◽

Removal Of Heavy Metals ◽

Intra Particle Diffusion ◽

Order Kinetic Model ◽

Phosphate Silicate ◽

Pseudo Second Order

The multistage synthesis of the multi-wall carbon nanotubes (MWCNT) modified with polyamidoamine dendrimers, A1/ and A2/MWCNT, capable of cation removal, is presented in this work, as well as novel adsorbents based on these precursor materials and modified with goethite nano-deposit, ?-FeOOH, A1/ and A2/MWCNT??-FeO(OH) adsorbents used for As(V) removal. In a batch test, the influence of pH, contact time, initial ion concentration and temperature on adsorption efficiency were studied. Adsorption data modelling by the Langmuir isotherm, revealed good adsorption capacities (in mg g-1) of 18.8 for As(V) and 60.1 and 44.2 for Pb2+ and Cd2+ on A2/MWCNT, respectively. Also, 27.6 and 29.8 mg g-1 of As(V) on A1/ and A2/MWCNT??-FeO(OH), respectively, were removed. Thermodynamic parameters showed that the adsorption is spontaneous and endothermic processes. Results of the study of influences of competitive ions: bicarbonate, sulfate, phosphate, silicate, chromate, fluoride and natural organic matter (NOM), i.e., humic acid (HA), showed the highest effect of phosphate on the decrease of arsenate adsorption. Time-dependent adsorption was best described by pseudo-second-order kinetic model and Weber?Morris model which predicted intra-particle diffusion as a rate-controlling step. Also, activation energy (Ea / kJ mol-1): 8.85 for Cd2+, 9.25 for Pb2+ and 7.98 for As(V), were obtained from kinetic data.

Download Full-text

Light emitting diodes of fully conjugated heterocyclic aromatic rigid-rod polymer doped with multi-wall carbon nanotubes

Nanotechnology ◽

10.1088/0957-4484/16/8/072 ◽

2005 ◽

Vol 16 (8) ◽

pp. 1406-1410 ◽

Cited By ~ 28

Author(s):

Jen-Wei Huang ◽

Shih Jung Bai

Keyword(s):

Carbon Nanotubes ◽

Light Emitting Diodes ◽

Light Emitting ◽

Multi Wall Carbon Nanotubes ◽

Rigid Rod

Download Full-text

Multi-wall carbon nanotubes coating on a copper substrate using airbrush spray coating

Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering ◽

10.1177/0954408920959157 ◽

2020 ◽

pp. 095440892095915

Author(s):

M Meikandan ◽

P Ganesh Kumar ◽

D Sakthivadivel ◽

VS Vigneswaran ◽

K Malar Mohan

Keyword(s):

Carbon Nanotubes ◽

Large Scale ◽

Pure Copper ◽

Copper Substrate ◽

Multiwall Carbon Nanotubes ◽

Spray Coating ◽

Future Generation ◽

Normal Surface ◽

Multi Wall Carbon Nanotubes ◽

Coating Technique

The spray coating technique is used in this study to spread a thin layer of nanoparticle on a large flat substrate. The proposed spray coating techniques has a great potential for large scale productions, as these techniques have no restrictions on the substrate size and low utilization of the process parameters. In this study, a simple airbrush spray coating technique is used to deposit the multiwall carbon nanotubes (MWCNTs) on copper substrates with a decent deposition control. The microstructures, surface roughness, and wettability of the coated substrates were tested and compared with the pure copper substrates. The MWCNTs coated copper substrates exhibits a significant enhancement of the mechanical properties compared to the normal surface. The thickness of the copper substrates increases with increase in coating weight concentrations, the maximum thickness 1.43 microns achieved at 0.4 wt. % of MWCNTs. The usage of copper and MWCNTs based thin film signifies a inspiring but possibly a sustaining chance for developing the future generation heat transfer materials

Download Full-text

Silicone Elastomer Composites Fabricated with MgO and MgO-Multi-Wall Carbon Nanotubes with Improved Thermal Conductivity

Nanomaterials ◽

10.3390/nano11123418 ◽

2021 ◽

Vol 11 (12) ◽

pp. 3418

Author(s):

Christopher Kagenda ◽

Jae Wook Lee ◽

Fida Hussain Memon ◽

Faheem Ahmed ◽

Anupama Samantasinghar ◽

...

Keyword(s):

Thermal Conductivity ◽

Carbon Nanotubes ◽

Silicone Rubber ◽

Multiwall Carbon Nanotubes ◽

Silicone Elastomer ◽

Thermal Interface Materials ◽

Multi Wall Carbon Nanotubes ◽

Elastomer Composites ◽

Conductive Properties ◽

Interface Materials

The effect of multiwall carbon nanotubes (MWCNTs) and magnesium oxide (MgO) on the thermal conductivity of MWCNTs and MgO-reinforced silicone rubber was studied. The increment of thermal conductivity was found to be linear with respect to increased loading of MgO. In order to improve the thermal transportation of phonons 0.3 wt % and 0.5 wt % of MWCNTs were added as filler to MgO-reinforced silicone rubber. The MWCNTs were functionalized by hydrogen peroxide (H2O2) to activate organic groups onto the surface of MWCNTs. These functional groups improved the compatibility and adhesion and act as bridging agents between MWCNTs and silicone elastomer, resulting in the formation of active conductive pathways between MgO and MWCNTs in the silicone elastomer. The surface functionalization was confirmed with XRD and FTIR spectroscopy. Raman spectroscopy confirms the pristine structure of MWCNTs after oxidation with H2O2. The thermal conductivity is improved to 1 W/m·K with the addition of 20 vol % with 0.5 wt % of MWCNTs, which is an ~8-fold increment in comparison to neat elastomer. Improved thermal conductive properties of MgO-MWCNTs elastomer composite will be a potential replacement for conventional thermal interface materials.

Download Full-text