Large-area adlayer-free single-layer h-BN film achieved by controlling intercalation growth

2019 ◽  
Vol 498 ◽  
pp. 143851 ◽  
Author(s):  
Yanwei He ◽  
Hao Tian ◽  
Alireza Khanaki ◽  
Wenhao Shi ◽  
Jason Tran ◽  
...  
Keyword(s):  
Single Layer ◽  
Large Area

scholarly journals Mastering of NIL Stamps with Undercut T-Shaped Features from Single Layer to Multilayer Stamps

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 956
Author(s):  
Philipp Taus ◽  
Adrian Prinz ◽  
Heinz D. Wanzenboeck ◽  
Patrick Schuller ◽  
Anton Tsenov ◽  
...  
Keyword(s):  
Electron Beam Lithography ◽  
Nanoimprint Lithography ◽  
Silicon Oxide ◽  
Three Dimensional ◽  
Single Layer ◽  
Fabrication Technology ◽  
Large Area ◽  
Structural Colors ◽  
Biomimetic Structures ◽  
Morpho Butterfly

Biomimetic structures such as structural colors demand a fabrication technology of complex three-dimensional nanostructures on large areas. Nanoimprint lithography (NIL) is capable of large area replication of three-dimensional structures, but the master stamp fabrication is often a bottleneck. We have demonstrated different approaches allowing for the generation of sophisticated undercut T-shaped masters for NIL replication. With a layer-stack of phase transition material (PTM) on poly-Si, we have demonstrated the successful fabrication of a single layer undercut T-shaped structure. With a multilayer-stack of silicon oxide on silicon, we have shown the successful fabrication of a multilayer undercut T-shaped structures. For patterning optical lithography, electron beam lithography and nanoimprint lithography have been compared and have yielded structures from 10 µm down to 300 nm. The multilayer undercut T-shaped structures closely resemble the geometry of the surface of a Morpho butterfly, and may be used in future to replicate structural colors on artificial surfaces.

Improved Mobility and Bias Stability of Thin Film Transistors Using the Double-Layer a-InGaZnO/a-InGaZnO:N Channel

2016 ◽  
Vol 16 (4) ◽  
pp. 3659-3663
Author(s):  
H Yu ◽  
L Zhang ◽  
X. H Li ◽  
H. Y Xu ◽  
Y. C Liu
Keyword(s):  
Thin Film ◽  
Double Layer ◽  
Thin Film Transistors ◽  
Carrier Transport ◽  
Single Layer ◽  
Channel Structure ◽  
Gate Insulator ◽  
Large Area ◽  
Threshold Voltage Shift ◽  
High Carrier

The amorphous indium-gallium-zinc oxide (a-IGZO) thin film transistors (TFTs) were demonstrated based on a double-layer channel structure, where the channel is composed of an ultrathin nitrogenated a-IGZO (a-IGZO:N) layer and an undoped a-IGZO layer. The double-layer channel device showed higher saturation mobility and lower threshold-voltage shift (5.74 cm2/Vs, 2.6 V) compared to its single-layer counterpart (0.17 cm2/Vs, 7.23 V). The improvement can be attributed to three aspects: (1) improved carrier transport properties of the channel by the a-IGZO:N layer with high carrier mobility and the a-IGZO layer with high carrier concentration, (2) reduced interfacial trap density between the active channel and the gate insulator, and (3) higher surface flatness of the double-layer channel. Our study reveals key insights into double-layer channel, involving selecting more suitable electrical property for back-channel layer and more suitable interface modification for active layer. Meanwhile, room temperature fabrication amorphous TFTs offer certain advantages on better flexibility and higher uniformity over a large area.

scholarly journals Correction: Direct chemical vapor deposition synthesis of large area single-layer brominated graphene

RSC Advances ◽  
2019 ◽  
Vol 9 (28) ◽  
pp. 16057-16057
Author(s):  
Maria Hasan ◽  
Wang Meiou ◽  
Liu Yulian ◽  
Sami Ullah ◽  
Huy Q. Ta ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Large Area

Correction for ‘Direct chemical vapor deposition synthesis of large area single-layer brominated graphene’ by Maria Hasan et al., RSC Adv., 2019, 9, 13527–13532.

scholarly journals Tailoring Superconductivity in Large-Area Single-Layer NbSe2 via Self-Assembled Molecular Adlayers

Nano Letters ◽  
2020 ◽  
Author(s):  
Francesco Calavalle ◽  
Paul Dreher ◽  
Ananthu P. Surdendran ◽  
Wen Wan ◽  
Melanie Timpel ◽  
...  
Keyword(s):  
Single Layer ◽  
Large Area ◽  
Self Assembled

Photoelectron Spectroscopic Imaging and Device Applications of Large-Area Patternable Single-Layer MoS2Synthesized by Chemical Vapor Deposition

ACS Nano ◽  
2014 ◽  
Vol 8 (5) ◽  
pp. 4961-4968 ◽  
Author(s):  
Woanseo Park ◽  
Jaeyoon Baik ◽  
Tae-Young Kim ◽  
Kyungjune Cho ◽  
Woong-Ki Hong ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
Single Layer ◽  
Chemical Vapor ◽  
Spectroscopic Imaging ◽  
Large Area ◽  
Device Applications

scholarly journals Pulsed laser deposition of single-layer MoS2 on Au(111): from nanosized crystals to large-area films

2019 ◽  
Vol 1 (2) ◽  
pp. 643-655 ◽  
Author(s):  
Francesco Tumino ◽  
Carlo S. Casari ◽  
Matteo Passoni ◽  
Valeria Russo ◽  
Andrea Li Bassi
Keyword(s):  
Pulsed Laser Deposition ◽  
2D Materials ◽  
Optoelectronic Devices ◽  
Pulsed Laser ◽  
Single Layer ◽  
Laser Deposition ◽  
Large Area ◽  
Molybdenum Disulphide ◽  
High Quality ◽  
Nanosized Crystals

Molybdenum disulphide (MoS2) is a promising material for heterogeneous catalysis and novel 2D optoelectronic devices. In this work, single-layer MoS2 is synthesized on Au(111) by pulsed laser deposition, showing the potentialities of this technique in the synthesis of high-quality 2D materials films.

Silica single-layer inverse opal films: large-area crack-free fabrication and the regulation of transmittance in the visible region

2019 ◽  
Vol 7 (10) ◽  
pp. 2978-2986 ◽  
Author(s):  
Hua Li ◽  
Jianfeng Wang ◽  
Shali Li ◽  
Jacques Robichaud ◽  
Dan Wang ◽  
...  
Keyword(s):  
Porous Structure ◽  
Visible Region ◽  
Single Layer ◽  
Inverse Opal ◽  
Large Area

Crack-free large-area single-layer SiO2 inverse opal (IO) films similar to an inverse “moth's eye” structure, are fabricated. The effects of their porous structure on transmittance in the visible region are investigated.

Large-Area, Free-Standing, Two-Dimensional Supramolecular Polymer Single-Layer Sheets for Highly Efficient Electrocatalytic Hydrogen Evolution

2015 ◽  
Vol 127 (41) ◽  
pp. 12226-12231 ◽  
Author(s):  
Renhao Dong ◽  
Martin Pfeffermann ◽  
Haiwei Liang ◽  
Zhikun Zheng ◽  
Xiang Zhu ◽  
...  
Keyword(s):  
Hydrogen Evolution ◽  
Single Layer ◽  
Supramolecular Polymer ◽  
Two Dimensional ◽  
Large Area ◽  
Free Standing ◽  
Highly Efficient

Large-area Metrology of CVD-grown Graphene Layers on Copper Foil Substrates

2012 ◽  
Vol 1451 ◽  
pp. 45-49
Author(s):  
Dennis L. Pleskot ◽  
Jennifer R. Kyle ◽  
Maziar Ghazinejad ◽  
Shirui Guo ◽  
Isaac Ruiz ◽  
...  
Keyword(s):  
Effective Means ◽  
Single Layer ◽  
Pristine Graphene ◽  
Large Area ◽  
Fluorescence Image ◽  
Graphene Layers ◽  
Graphene Sample ◽  
Doped Graphene ◽  
Grown Graphene

ABSTRACTFluorescence Quenching Microscopy has been shown to be an effective means of characterizing graphene on the macroscale. Centimeter-scale CVD-grown pristine and doped graphene were manufactured in a high temperature (1000°C) furnace on pristine copper substrates. The copper was then etched away in a FeCl3solution and the graphene was coated with DCM-based fluorescent dye before being imaged in a fluorescence microscope. The fluorescence image was then image-processed using modified Matlab software. The resulting image showed clear contrast between the pristine graphene sheet and defects on the graphene surface, which revealed that fluorescence microscopy could determine the quality of a large region of graphene. Also, significant contrast was identified between single-layer and multi-layer regions, showing that this technique is also effective at determining the degree of uniformity within a graphene sample. Lastly, the fluorescence images showed contrast between doped and undoped regions of graphene.

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