• Home
  • Privacy Policy
  • About Us
  • Contact Us
  • Live TV
  • Canadian Radio
  • USA Radio
  • forum
  • Terms&Conditions
Sunday, August 14, 2022
Morning News
No Result
View All Result
  • Login
  • Register
  • Home
  • News
    • Local
      • Toronto
      • Vancouver
    • National
    • World
  • Business
    • Economy
    • Marketing
    • Finance
    • Ideas
  • Investing
    • Market News
    • Stocks Market
    • Cryptocurrency
  • Real Estate
    • The house Market
    • Toronto House
    • Vancouver House
  • Politics
  • Opinion
  • Entertainment
  • Sports
  • Life
    • Fashion
    • Food
    • Health
      • Nutrition
      • Health News
    • Style
    • Travel
      • Tourism News
      • Airline News
      • Hotel News
      • Food & Beverage Travel News
      • Cruise News
  • Technology
    • Automotive
    • Computer Sciences
    • Consumer & Gadgets
    • Electronics & Semiconductors
    • Engineering
    • Energy & Green Tech
    • Business-consumer-gadgets
    • Hardware
    • Hi Tech & Innovation
    • Internet
    • Machine learning & AI
    • Robotics
    • Software
    • Security
    • Telecom
  • Apps
    • Live TV
    • Canadian Radio
    • USA Radio
    • forum
  • Home
  • News
    • Local
      • Toronto
      • Vancouver
    • National
    • World
  • Business
    • Economy
    • Marketing
    • Finance
    • Ideas
  • Investing
    • Market News
    • Stocks Market
    • Cryptocurrency
  • Real Estate
    • The house Market
    • Toronto House
    • Vancouver House
  • Politics
  • Opinion
  • Entertainment
  • Sports
  • Life
    • Fashion
    • Food
    • Health
      • Nutrition
      • Health News
    • Style
    • Travel
      • Tourism News
      • Airline News
      • Hotel News
      • Food & Beverage Travel News
      • Cruise News
  • Technology
    • Automotive
    • Computer Sciences
    • Consumer & Gadgets
    • Electronics & Semiconductors
    • Engineering
    • Energy & Green Tech
    • Business-consumer-gadgets
    • Hardware
    • Hi Tech & Innovation
    • Internet
    • Machine learning & AI
    • Robotics
    • Software
    • Security
    • Telecom
  • Apps
    • Live TV
    • Canadian Radio
    • USA Radio
    • forum
No Result
View All Result
Morning News
No Result
View All Result
Home Technology Electronics & Semiconductors

A transfer-printing technique to integrate metal electrodes and 2D materials on a wafer-scale

by Author
June 20, 2022
in Electronics & Semiconductors
Reading Time: 5 mins read
0 0
A A
0
1
SHARES
13
VIEWS
FacebookTwitterLinkedinRedditWhatsapp
A transfer printing technique to integrate metal electrodes and 2D materials on a wafer-scale
Illustration and optical images of the graphene-assisted metal transfer printing process. a, Schematic of the graphene-assisted metal transfer printing process for both weakly and strongly adhering metals: six different metals deposited on wafer-scale Gr/Ge substrate. b, Photographs corresponding to Au patterns transferred onto a four-inch SiO2 wafer. The inset shows an optical image of the transferred Au pattern array. Credit: Liu et al.

Metal-semiconductor junctions, electrical junctions in which a metal is linked to a semiconducting material, are crucial components for numerous electronic and optoelectronic devices. While they are now widely produced and used worldwide, creating good quality junctions that integrate conventional metals and 2D semiconductors can be difficult.

In fact, when applied to 2D materials, conventional metal deposition techniques, which entail a process known as ion bombardment, can cause a chemical disorder. In addition, existing transfer printing techniques, which involve the pre-deposition and transfer of metal electrodes on the surface of 2D materials, have been found to perform poorly due to the creation of chemical bonds on the substrate for the pre-deposition that hinder the electrodes’ transfer.

Researchers at the Chinese Academy of Sciences, Hunan University, City University of Hong Kong and Fudan University have recently developed a new technique that could be used to transfer metal electrodes on 2D materials more effectively, enabling the development of more reliable metal-semiconductor junctions. This technique, introduced in a paper published in Nature Electronics, entails the delamination of metal electrode arrays from a graphene wafer, and their subsequent transfer printing onto different 2D materials.

“For the first time, in 2013, we reported that continuous graphene monolayers can be grown via CVD directly on semiconducting Ge(001) surfaces, making a significant departure from conventional metallic systems,” Zengfeng Di, one of the researchers who carried out the study, told TechXplore. “Because of the insulating property of intrinsic Ge at the temperature below 10K, we carried out the research on graphene-mediated superconductivity in the metal nano-islands/graphene hybrid on Ge substrate, without the transfer of graphene from Ge substrate to SiO2 substrate.”

While conducting their previous research, Di and his colleagues realized that when deposited on graphene, metals can be peeled off very easily. This was also true for titanium or nickel, which are typically very difficult to exfoliate from conventional silica substrate.

In their recent study, the team used their technique to deposit six different kinds of metals onto a wafer-scale graphene/Ge donor substrate. This included both weakly adhering metals, namely copper, silver and gold, and strongly adhering metals, namely platinum, titanium and nickel.

A transfer printing technique to integrate metal electrodes and 2D materials on a wafer-scale
Electrical properties of the MoS2 back-gated FET array with transferred Ag contacts. a, Optical image of the batch-fabricated MoS2 back-gated FET array on a 1 × 1 cm SiO2 substrate. b, Mapping of the on/off ratios from 10 × 10 back-gated FET devices. c, Transfer characteristics of an individual back-gated FET device. d, Output characteristics of an individual back-gated FET device. Credit: Liu et al.

“Both weakly adhering metals and strongly adhering metals can be easily delaminated,” Di explained. “Our scalable, universal, and wafer-scale metal transfer technique can be utilized to create van der Waals contacts between two-dimensional semiconductors and three-dimensional metals, which are essential for developing 2D electronic and optoelectronic devices.”

The researchers’ approach for the integration of metal electrodes on 2D materials has several steps. First, it requires the deposition of a metal electrode array on a graphene/Ge substrate. As graphene is free from dangling bonds, the array can be easily peeled off from the substrate’s surface using a polymer film.

“After removing the polymer film by deionized water, wafer-scale 3D metal patterns can transfer onto an arbitrary target,” Di said. “Compared with the previous transfer printing methods using silica substrate, we can transfer arbitrary metal with 100% yield and scale up the transfer technology to wafer size.”

The approach developed by Di and his colleagues is universal and could be used to form van der Waals contacts between various 2D semiconductors and 3D metals. In the future, it could be used to realize new types of van der Waals integrated circuits.

“A prerequisite for practical batch production of 2D devices is the ability of reliable mass production,” Di said. “With the graphene-assisted metal transfer-printing approach, we created MoS2 transistor arrays which show uniform electrical characteristics and good average values for the on/off current ratio, on-current, and subthreshold swing.”

Based on the initial tests they ran, Di and his colleagues think that their graphene-assisted metal transfer approach is a reliable solution for the large-scale manufacturing of integrated circuits based on 2D materials. In their next studies, they plan to start using their technique to develop specific components for electronic and optoelectronic devices, to evaluate its effectiveness further.

“Beyond a simple 2D transistor, we are using this technique to fabricate basic 2D logical units, including AND-OR, NOR, and AND gate,” Di added. “In addition, the cost of our approach should be further reduced by optimizing the process and increasing the reusability of graphene/Ge substrate.”


Explore further

Graphene crystals grow better under copper cover


More information:
Guanyu Liu et al, Graphene-assisted metal transfer printing for wafer-scale integration of metal electrodes and two-dimensional materials, Nature Electronics (2022). DOI: 10.1038/s41928-022-00764-4

Gang Wang et al, Direct Growth of Graphene Film on Germanium Substrate, Scientific Reports (2013). DOI: 10.1038/srep02465

Journal information:Scientific Reports
,
Nature Electronics

© 2022 Science X Network

Citation:
A transfer-printing technique to integrate metal electrodes and 2D materials on a wafer-scale (2022, June 20)
retrieved 20 June 2022
from https://techxplore.com/news/2022-06-transfer-printing-technique-metal-electrodes-2d.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.
Tags: graphenemetalsubstrate

Related Posts

Electronics & Semiconductors

An ultrafast and highly performing nonlinear splitter based on lithium niobate

2 days ago

Comparison of device design and operating principle. Nature Photonics(2022). DOI: 10.1038/s41566-022-01044-5 Optics, technologies that leverage the behavior and properties of...

Electronics & Semiconductors

What if we could recycle the energy remaining in discarded batteries? Scientists now know how

3 days ago

Credit: Unsplash/CC0 Public Domain Alkaline and zinc-carbon batteries are common in many self-powered devices. However, once a battery is discharged,...

Next Post
Zooey Deschanel

Zooey Deschanel Shares Father’s Day Picture Of Kids With Their Dad Jacob Pechenik And Her Partner Jonathan Scott

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Daily Popular

Economy

Germany is facing dramatic change in many dimensions all at once

by Author
3 days ago
0
37

Much ofgermany’s success in recent decades can be put down to staying the course. Even its dramas were dramas of...

Read more

Russia’s invasion of Ukraine has eroded the nuclear taboo

S&P 500 Hits Bear Market Territory

Canadian Blood Services in talks around paid donations of plasma as supply dwindles

What Taiwan can learn from Russia’s invasion of Ukraine

Load More

Popular News

More power on less land: The push to shrink solar’s footprint

August 8, 2022
34

MornsLive TV

August 13, 2022
34
malvern town centre

Another Toronto mall will be completely demolished to make way for condos

August 4, 2022
97
The teacher was convicted of possessing child pornography in 2021. (File Photo)

Greater Victoria teacher permanently banned from teaching after child porn conviction

August 9, 2022
19

Ajax mourns the loss of two construction workers in trench collapse

August 10, 2022
18
Load More
Shop is live!!!
Shop is live!!!

News Staff Editor

Transform How Your House Look With This Simple Tips

by News-Staff
August 2, 2022
0
44

A home is a place where we can feel safe and loved. It's a place where we can be ourselves,...

Read more
Load More

Most Comment

Fire in Brampton leads to residents being evacuated

March 2, 2022
15

Man killed in Vancouver Island helicopter crash remembered as skilled pilot, community volunteer

April 8, 2022
10

Log4j software flaw ‘endemic,’ new cyber safety panel says

July 14, 2022
10

Vanguard adds an ‘impact fund’ that targets social and environmental change

July 18, 2022
11

War means pain for Europe now, later for Russia

July 18, 2022
11
Load More

Forums

  • funny
  • investing
  • pics
  • politics
  • sports
  • stocks
  • technology
  • worldnews

Recent Topics

  • Online Sports Dissipated Sites54
  • 679 største udvalg af fodboldtrøjer AdanLo
  • 083 fotballdrakter barn Krystl
  • 051 hvor kan man kjøpe fotballdrakter Michae
  • 346 klassiska fotbollströjor JulieM
  • 346 klassiska fotbollströjor JulieM
  • Tell me your recommendations please.

Topic Views List

  • Most popular topics
  • Topics with no replies

Recent Replies

  • Funny Dog Videos
  • 346 klassiska fotbollströjor JulieM
  • Home
  • Privacy Policy
  • About Us
  • Contact Us
  • Live TV
  • Canadian Radio
  • USA Radio
  • forum
  • Terms&Conditions

© 2022 All News in One - Morning News by morns.ca.

No Result
View All Result
  • Home
  • News
    • Local
      • Toronto
      • Vancouver
    • National
    • World
  • Business
    • Economy
    • Marketing
    • Finance
    • Ideas
  • Investing
    • Market News
    • Stocks Market
    • Cryptocurrency
  • Real Estate
    • The house Market
    • Toronto House
    • Vancouver House
  • Politics
  • Opinion
  • Entertainment
  • Sports
  • Life
    • Fashion
    • Food
    • Health
      • Nutrition
      • Health News
    • Style
    • Travel
      • Tourism News
      • Airline News
      • Hotel News
      • Food & Beverage Travel News
      • Cruise News
  • Technology
    • Automotive
    • Computer Sciences
    • Consumer & Gadgets
    • Electronics & Semiconductors
    • Engineering
    • Energy & Green Tech
    • Business-consumer-gadgets
    • Hardware
    • Hi Tech & Innovation
    • Internet
    • Machine learning & AI
    • Robotics
    • Software
    • Security
    • Telecom
  • Apps
    • Live TV
    • Canadian Radio
    • USA Radio
    • forum
  • Login
  • Sign Up

© 2022 All News in One - Morning News by morns.ca.

Welcome Back!

Sign In with Facebook
Sign In with Google
Sign In with Linked In
OR

Login to your account below

Forgotten Password? Sign Up

Create New Account!

Sign Up with Facebook
Sign Up with Google
Sign Up with Linked In
OR

Fill the forms below to register

All fields are required. Log In

Retrieve your password

Please enter your username or email address to reset your password.

Log In