Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > USTC develops ultrahigh-performance plasmonic metal-oxide materials

Abstract:
In a study published in Advanced Materials, the researchers from Hefei National Laboratory for Physical Sciences at the Microscale, the University of Science and Technology of China of the Chinese Academy of Sciences, using an electron-proton co-doping strategy, invented a new metal-like semiconductor material with excellent plasmonic resonance performance. This material achieves a metal-like ultrahigh free-carrier concentration that leads to strong and tunable plasmonic field.

USTC develops ultrahigh-performance plasmonic metal-oxide materials

Anhui, P.R.China | Posted on January 11th, 2021

Plasmonic materials are widely used in the fields including microscopy, sensing, optical computing and photovoltaics. Most common plasmonic materials are gold and silver. Some other materials also show metal-like optical properties but just perform poor in limited wavelength ranges.

In recent years, much effort has been made in finding high-performance plasmonic materials excluding noble metals. Metal-oxide semiconductor materials have rich and tunable properties such as light, electricity, heat, and magnetism. Hydrogenation treatment can effectively modify their electronic structure to reach rich and tunable plasmon effects. It is a challenge to significantly increase the intrinsically low concentration of free carriers in metal-oxide materials.

The researchers in this study developed a electron-proton co-doping strategy with theoretical calculations. They hydrogenated the semiconductor material MoO3 via a simplified metal-acid treatment at mild conditions, realizing the controllable insulator-to-metal phase transition, which significantly increase the concentration of free carriers in the metal-oxide material.

The free electron concentration in the hydrogenated MoO3 material is equivalent to that of the precious metal. This property makes the plasmon resonance response of the material moving from the near infrared area to the visible light area. The plasmon resonance response of the material has both strong gain and adjustability.

Using ultrafast spectroscopy characterizations and first-principle simulations, the researchers unraveled the quasi-metallic energy band structure in the hydrogen-doped HxMoO3 with its dynamical features of plasmonic responses.

To verify their modification, they performed the surface-enhanced Raman spectra (SERS) of rhodamine 6G molecules on the material. The result showed that the SERS enhancement factor reached as high as 1.1 × 107 with a detection limit at concentration as low as 1 × 10-9 mol/L.

This study developed a general strategy to increase the concentration of free carriers in a non-metal semiconductor material system, which not only realized a quasi-metallic phase material with strong and tunable plasmon effect at low cost, but also significantly broadened the variable range of the physical and chemical properties of semiconductor materials. It provides a unique idea and guidance for designing novel metal oxide functional materials.

####

For more information, please click here

Contacts:
Jane FAN Qiong

86-551-636-07280

Copyright © University of Science and Technology of China (USTC)

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

RELATED JOURNAL ARTICLE:

Related News Press

News and information

Optimized method to detect high-dimensional entanglement December 3rd, 2021

Scientists edge closer to probe that would inspect atherosclerotic plaques by forcing molecules to sound their presence December 3rd, 2021

Two-dimensional bipolar magnetic semiconductors with high Curie-temperature and electrically controllable spin polarization realized in exfoliated Cr(pyrazine)2 monolayers December 3rd, 2021

Review on the femtosecond laser precision micro/nano-engineering December 3rd, 2021

Imaging

New microscopy method offers 3D tracking of 100 single molecules at once November 19th, 2021

Visualizing temperature transport: An unexpected technique for nanoscale characterization November 19th, 2021

Cellular environments shape molecular architecture: Researchers glean a more complete picture of a structure called the nuclear pore complex by studying it directly inside cells October 15th, 2021

Tweezer grant pleases Rice researchers: University wins NSF grant to acquire ‘optical tweezer’ to manipulate micron-scale matter September 10th, 2021

Imaging single spine structural plasticity at the nanoscale level: Researchers at the Max Planck Florida Institute for Neuroscience (MPFI) have developed a new imaging technique capable of visualizing the dynamically changing structure of dendritic spines with unprecedented resol September 3rd, 2021

Plasmonics

A new dimension in magnetism and superconductivity launched November 5th, 2021

Possible Futures

Researchers develop polyimide-mica nanocomposite film with high resistance to low earth orbit environments December 3rd, 2021

Researchers realize ultra-high precision search for exotic interactions December 3rd, 2021

Optimized method to detect high-dimensional entanglement December 3rd, 2021

Scientists edge closer to probe that would inspect atherosclerotic plaques by forcing molecules to sound their presence December 3rd, 2021

Optical computing/Photonic computing

Optimized method to detect high-dimensional entanglement December 3rd, 2021

Efficient photon upconversion at an organic semiconductor interface November 19th, 2021

Quantum Collaboration: Two UCSB scientists receive award to partner with Cisco’s new Quantum Research Team November 3rd, 2021

Ultrafast magnetism: heating magnets, freezing time: This study on Gadolinium is completing a series of experiments on Nickel, Iron-Nickel Alloys: The results are useful for developing ultrafast data storage devices October 15th, 2021

Discoveries

Researchers develop polyimide-mica nanocomposite film with high resistance to low earth orbit environments December 3rd, 2021

Researchers realize ultra-high precision search for exotic interactions December 3rd, 2021

Optimized method to detect high-dimensional entanglement December 3rd, 2021

Scientists edge closer to probe that would inspect atherosclerotic plaques by forcing molecules to sound their presence December 3rd, 2021

Materials/Metamaterials

Researchers develop polyimide-mica nanocomposite film with high resistance to low earth orbit environments December 3rd, 2021

An artificial material that can sense, adapt to its environment: University of Missouri engineers are collaborating with researchers at University of Chicago to design the material November 5th, 2021

UTA project aims to extend life of concrete, cement by adding nanoscale wood fibers: Wood fibers key to sustainable concrete, cement September 24th, 2021

Nanocellulose decorated with proteins is suitable for 3D cell culturing September 24th, 2021

Announcements

Scientists edge closer to probe that would inspect atherosclerotic plaques by forcing molecules to sound their presence December 3rd, 2021

Two-dimensional bipolar magnetic semiconductors with high Curie-temperature and electrically controllable spin polarization realized in exfoliated Cr(pyrazine)2 monolayers December 3rd, 2021

Review on the femtosecond laser precision micro/nano-engineering December 3rd, 2021

Development of a single-process platform for the manufacture of graphene quantum dots: Precisely controls the bonding configuration of heteroatoms in graphene quantum dots through simple chemical processes. Practical application and commercialization in various fields is expected December 3rd, 2021

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

Using green tea as reducing reagent for the preparation of nanomaterials to synthesize ammonia December 3rd, 2021

Researchers develop polyimide-mica nanocomposite film with high resistance to low earth orbit environments December 3rd, 2021

Researchers realize ultra-high precision search for exotic interactions December 3rd, 2021

Development of a single-process platform for the manufacture of graphene quantum dots: Precisely controls the bonding configuration of heteroatoms in graphene quantum dots through simple chemical processes. Practical application and commercialization in various fields is expected December 3rd, 2021

Tools

New microscopy method offers 3D tracking of 100 single molecules at once November 19th, 2021

Inspired by photosynthesis, scientists double reaction quantum efficiency October 1st, 2021

Ultrasound at the nanometre scale reveals the nature of force September 17th, 2021

Tweezer grant pleases Rice researchers: University wins NSF grant to acquire ‘optical tweezer’ to manipulate micron-scale matter September 10th, 2021

Energy

Using green tea as reducing reagent for the preparation of nanomaterials to synthesize ammonia December 3rd, 2021

Two is better than one: Single-atom dimer electrocatalyst for green hydrogen production: Nickel-cobalt metal dimer on nitrogen-doped carbon can catalyze electrolysis under both acidic and basic conditions November 19th, 2021

Reaction-dependent coffee-ring-regulating method in spray-coating perovskite November 5th, 2021

A sunny outlook for solar: New research demonstrates great promise of all-inorganic perovskite solar cells for improving the efficiencies of solar cells October 15th, 2021

Photonics/Optics/Lasers

Optimized method to detect high-dimensional entanglement December 3rd, 2021

Scientists edge closer to probe that would inspect atherosclerotic plaques by forcing molecules to sound their presence December 3rd, 2021

Review on the femtosecond laser precision micro/nano-engineering December 3rd, 2021

Efficient photon upconversion at an organic semiconductor interface November 19th, 2021

Solar/Photovoltaic

Reaction-dependent coffee-ring-regulating method in spray-coating perovskite November 5th, 2021

A sunny outlook for solar: New research demonstrates great promise of all-inorganic perovskite solar cells for improving the efficiencies of solar cells October 15th, 2021

Ultrafast & ultrathin: new physics professor at TU Dresden makes mysterious quantum world visible September 10th, 2021

The National Space Society Joins the Progressive Policy Institute in Supporting Rapid Development of Space Solar Power: Orbiting Solar Power Stations Would Help to Save the Environment August 20th, 2021

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