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

Princeton-led team discovers unexpected quantum behavior in kagome lattice:Experiments suggest evidence for novel patterns of electronic charge distribution in a kagome material whose handedness can be manipulated with a magnetic field June 18th, 2021

Atomic-scale tailoring of graphene approaches macroscopic world June 18th, 2021

Compact quantum computer for server centers: Researchers build smallest quantum computer yet based on industry standards June 18th, 2021

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

'Nanodecoy' therapy binds and neutralizes SARS-CoV-2 virus June 18th, 2021

Imaging

Atomic-scale tailoring of graphene approaches macroscopic world June 18th, 2021

Plasmonics

TPU scientists offer new plasmon energy-based method to remove CO2 from atmosphere March 19th, 2021

Experiment takes 'snapshots' of light, stops light, uses light to change properties of matter December 25th, 2020

Observation charge accumulation at nanocavity on plasmonic photocatalyst August 28th, 2020

Making quantum 'waves' in ultrathin materials: Study co-led by Berkeley Lab reveals how wavelike plasmons could power up a new class of sensing and photochemical technologies at the nanoscale May 15th, 2020

Possible Futures

AI app could help diagnose HIV more accurately: Pioneering technology developed by UCL (University College London) and Africa Health Research Institute (AHRI) researchers could transform the ability to accurately interpret HIV test results, particularly in low- and middle-income June 18th, 2021

Atomic-scale tailoring of graphene approaches macroscopic world June 18th, 2021

Compact quantum computer for server centers: Researchers build smallest quantum computer yet based on industry standards June 18th, 2021

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

Optical computing/Photonic computing

Researchers tame silicon to interact with light for next-generation microelectronics June 11th, 2021

Luminaries: Steven DenBaars and John Bowers receive top recognition at Compound Semiconductor Week conference May 21st, 2021

Emergence of a new heteronanostructure library May 14th, 2021

With new optical device, engineers can fine tune the color of light April 23rd, 2021

Discoveries

AI app could help diagnose HIV more accurately: Pioneering technology developed by UCL (University College London) and Africa Health Research Institute (AHRI) researchers could transform the ability to accurately interpret HIV test results, particularly in low- and middle-income June 18th, 2021

Atomic-scale tailoring of graphene approaches macroscopic world June 18th, 2021

Compact quantum computer for server centers: Researchers build smallest quantum computer yet based on industry standards June 18th, 2021

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

Materials/Metamaterials

Novel liquid crystal metalens offers electric zoom June 17th, 2021

Active platinum species: Catalytic high-temperature oxidations: Individual atom or metal cluster? June 16th, 2021

New family of atomic-thin electride materials discovered June 11th, 2021

Researchers turned transparent calcite into artificial gold June 11th, 2021

Announcements

Proliferation of electric vehicles based on high-performance, low-cost sodium-ion battery:A large-capacity anode material is developed for sodium-ion batteries by using low-cost silicone-based oil. This process, if commercialized, is expected to significantly reduce manufacturing June 18th, 2021

AI app could help diagnose HIV more accurately: Pioneering technology developed by UCL (University College London) and Africa Health Research Institute (AHRI) researchers could transform the ability to accurately interpret HIV test results, particularly in low- and middle-income June 18th, 2021

Compact quantum computer for server centers: Researchers build smallest quantum computer yet based on industry standards June 18th, 2021

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

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

Princeton-led team discovers unexpected quantum behavior in kagome lattice:Experiments suggest evidence for novel patterns of electronic charge distribution in a kagome material whose handedness can be manipulated with a magnetic field June 18th, 2021

AI app could help diagnose HIV more accurately: Pioneering technology developed by UCL (University College London) and Africa Health Research Institute (AHRI) researchers could transform the ability to accurately interpret HIV test results, particularly in low- and middle-income June 18th, 2021

Compact quantum computer for server centers: Researchers build smallest quantum computer yet based on industry standards June 18th, 2021

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

Tools

Atomic-scale tailoring of graphene approaches macroscopic world June 18th, 2021

A novel nitrogen-doped dual-emission carbon dots as an effective fluorescent probe for ratiometric detection dopamine June 1st, 2021

Using the environment to control quantum devices: A deeper understanding of how the environment impacts quantum behaviour is bringing quantum devices one step closer to widespread adoption June 1st, 2021

Nanophotonics enhanced coverslip for phase imaging in biology May 14th, 2021

Energy

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

Active platinum species: Catalytic high-temperature oxidations: Individual atom or metal cluster? June 16th, 2021

Molecular coating enhances organic solar cells June 11th, 2021

New form of silicon could enable next-gen electronic and energy devices: Novel crystalline form of silicon could potentially be used to create next-generation electronic and energy devices June 4th, 2021

Photonics/Optics/Lasers

Graphene drum: Researchers develop new phonon laser design June 18th, 2021

Researchers tame silicon to interact with light for next-generation microelectronics June 11th, 2021

Luminaries: Steven DenBaars and John Bowers receive top recognition at Compound Semiconductor Week conference May 21st, 2021

Emergence of a new heteronanostructure library May 14th, 2021

Solar/Photovoltaic

Changing a 2D material's symmetry can unlock its promise: Jian Shi Research Group engineers material into promising optoelectronic June 18th, 2021

Molecular coating enhances organic solar cells June 11th, 2021

New form of silicon could enable next-gen electronic and energy devices: Novel crystalline form of silicon could potentially be used to create next-generation electronic and energy devices June 4th, 2021

Researchers build structured, multi-part nanocrystals with super light-emitting properties May 28th, 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