Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > A major advance in mastering the extraordinary properties of an emerging semiconductor: Black phosphorus reveals its secrets thanks to a scientific breakthrough made by a team from Universite de Montreal, Polytechnique Montreal and CNRS in France

Abstract:
A team of researchers from Universite de Montreal, Polytechnique Montreal and the Centre national de la recherche scientifique (CNRS) in France is the first to succeed in preventing two-dimensional layers of black phosphorus from oxidating. In so doing, they have opened the doors to exploiting their striking properties in a number of electronic and optoelectronic devices. The study's results were published in the prestigious journal Nature Materials.

A major advance in mastering the extraordinary properties of an emerging semiconductor: Black phosphorus reveals its secrets thanks to a scientific breakthrough made by a team from Universite de Montreal, Polytechnique Montreal and CNRS in France

Montreal, Canada | Posted on June 2nd, 2015

Black phosphorus: future key player in new technologies

Black phosphorus, a stable allotrope of phosphorus that presents a lamellar structure similar to that of graphite, has recently begun to capture the attention of physicists and materials researchers. It is possible to obtain single atomic layers from it, which researchers call 2D phosphane. A cousin of the widely publicized graphene, 2D phosphane brings together two very sought-after properties for device design.

First, 2D phosphane is a semiconductor material that provides the necessary characteristics for making transistors and processors. With its high-mobility, it is estimated that 2D phosphane could form the basis for electronics that is both high-performance and low-cost.

Furthermore, this new material features a second, even more distinctive, characteristic: its interaction with light depends on the number of atomic layers used. One monolayer will emit red light, whereas a thicker sample will emit into the infrared. This variation makes it possible to manufacture a wide range of optoelectronic devices, such as lasers or detectors, in a strategic fraction of the electromagnetic spectrum.

A scientific first: preserving single-atom layers of 2D phosphane from degrading

Until now, the study of 2D phosphane's properties was slowed by a major problem: in ambient conditions, very thin layers of the material would degrade, to the point of compromising its future in the industry despite its promising potential.

As such, the research team has made a major step forward by succeeding in determining the physical mechanisms at play in this degradation, and in identifying the key elements that lead to the layers' oxidation.

"We have demonstrated that 2D phosphane undergoes oxidation under ambient conditions, caused jointly by the presence of oxygen, water and light. We have also characterized the phenomenon's evolution over time by using electron beam spectroscopy and Raman spectroscopy," reports Professor Richard Martel of Universite de Montreal's Department of Chemistry.

Next, the researchers developed an efficient procedure for producing these very fragile single-atom layers and keeping them intact.

"We were able to study the vibration modes of the atoms in this new material. Since earlier studies had been carried out on heavily degraded materials, we revealed the as-yet-unsuspected effects of quantum confinement on atoms' vibration modes," notes Professor Sebastien Francoeur of Polytechnique's Department of Engineering Physics.

The study's results will help the world scientific community develop 2D phosphane's very special properties with the aim of developing new nanotechnologies that could give rise to high-performance microprocessors, lasers, solar cells and more.

###

This work is financially supported by the Natural Sciences and Engineering Research Council of Canada, the Canada Foundation for Innovation, and Fonds de Recherche du Quebec-Nature et technologie.

####

For more information, please click here

Contacts:
Annie Touchette
Senior Advisor
Communications, Polytechnique Montréal

514-231-8133

Copyright © Polytechnique Montreal

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Article:

Related News Press

News and information

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Govt.-Legislation/Regulation/Funding/Policy

Caught in the act: Images capture molecular motions in real time July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

What happens when you explode a chemical bond? Attosecond laser technique yields movies of chemical bond dissociation July 12th, 2019

Chip Technology

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Engineers revolutionize molecular microscopy: Single molecules measure electrical potentials July 12th, 2019

'Tsunami' on a silicon chip: a world first for light waves: Sydney-Singapore team manipulates soliton photonic waves on a silicon chip July 5th, 2019

Discoveries

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

Announcements

Nanometrics to Announce Second Quarter Financial Results on July 30, 2019 July 17th, 2019

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Caught in the act: Images capture molecular motions in real time July 15th, 2019

NUS ‘smart’ textiles boost connectivity between wearable sensors by 1,000 times: Metamaterials are incorporated into conventional clothing to dramatically improve signal strength between electronic devices, allowing for new applications July 15th, 2019

An 'EpiPen' for spinal cord injuries July 12th, 2019

Energy

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Experiments show dramatic increase in solar cell output: Method for collecting two electrons from each photon could break through theoretical solar-cell efficiency limit July 5th, 2019

Black (nano)gold combat climate change July 5th, 2019

Researchers unveil how soft materials react to deformation at molecular level June 24th, 2019

Photonics/Optics/Lasers

What happens when you explode a chemical bond? Attosecond laser technique yields movies of chemical bond dissociation July 12th, 2019

Strange warping geometry helps to push scientific boundaries July 12th, 2019

A new way of making complex structures in thin films: Self-assembling materials can form patterns that might be useful in optical devices July 5th, 2019

'Tsunami' on a silicon chip: a world first for light waves: Sydney-Singapore team manipulates soliton photonic waves on a silicon chip July 5th, 2019

Research partnerships

The best of both worlds: how to solve real problems on modern quantum computers July 12th, 2019

Sheaths drive powerful new artificial muscles July 11th, 2019

Activity of fuel cell catalysts doubled: Modelling leads to the optimum size for platinum fuel cell catalysts July 5th, 2019

Spontaneous synchronisation achieved at the nanoscale July 4th, 2019

Solar/Photovoltaic

Breakthrough material could lead to cheaper, more widespread solar panels and electronics July 16th, 2019

Experiments show dramatic increase in solar cell output: Method for collecting two electrons from each photon could break through theoretical solar-cell efficiency limit July 5th, 2019

Black (nano)gold combat climate change July 5th, 2019

Next-gen solar cells spin in new direction: Phosphorene shows efficiency promise June 21st, 2019

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project