Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


android tablet pc

Home > Press > New Innovative Nano Sized Metallic Semi-Conductor: Indian researchers have explored the semiconducting nature of lead nanopowder

T. Theivasanthi
T. Theivasanthi

Abstract:
Indian researchers have developed a new metallic semiconductor. The group (Theivasanthi and Alagar), based at Centre for Research and Post Graduate Department of Physics, Ayya Nadar Janaki Ammal College comments: "To our best knowledge, this is the first demonstration of semiconducting nature of lead nanopowder (Pb). So far, lead metal has been known as a good / super conductor." The researchers have explained the synthesis procedures of this metal powder in their earlier report [Theivasanthi et al, arXiv:1212.5795] and explore its semiconducting properties in current report [Theivasanthi et al, arXiv:1302.1456]. Findings of this study suggests that the synthesized material is an efficient semiconducting material and can be utilized for making solar cells, optoelectronic, power and other semiconductor devices. TEM image of spherical Pb Nanoparticles is in Fig.1. This work throws some light on and helps further research on nano-sized lead powder.

New Innovative Nano Sized Metallic Semi-Conductor: Indian researchers have explored the semiconducting nature of lead nanopowder

India | Posted on February 18th, 2013

It is a well known fact that generally nano-materials have behaviors different from their bulk material. Size and shape provides important control over many of the physical properties (viz., melting point, magnetism, specific heat, conductivity, band gap, etc.), luminescence, optical, chemical and catalytic properties of nanomaterials. The present research has been done, based on these facts and the new nano sized Pb metallic semiconductor has been innovated. Photoluminescence study of the material indicates the emission of photon and suggests presence of bandgap in the material. This confirms semiconducting properties. PL spectra are in Fig.2 & 3.

As a direct bandgap material, the visible light shining on its surface is well absorbed by this material. Also, the large surface area (314 nm2) and high specific surface area (52m2g-1) of this material augments its light absorbance property. Quantum yield value greater than 1 of this material is the result of the gain of energy and it shows possible utilization for heat or photochemical reaction or photo-induced or radiation-induced chain reactions, in which a single photon may trigger a long chain of transformations. These characters will be very useful while applying this semiconductor material in photovoltaic cells.

The researchers have studied band gap values of Pb nanopowder obtained from UV-Vis, PL, Cyclic voltammetry analyses and resistivity values from Four probe analyses results. "Our data clearly indicates the semiconducting nature of Pb nanopowder and its direct bandgap," the researchers comment, adding: "Further research related to electrical behaviors, battery performances etc. of this material are going on."

####

For more information, please click here

Contacts:
T. Theivasanthi

Copyright © SciGuru Science News

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

This research has been published in arXiv of Cornell University:

and:

Related News Press

News and information

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

INSCX™ exchange to present Exchange trade reporting mechanism for engineered nanomaterials (NMs) to UK regulation agencies, insurers and upstream/downstream users April 17th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Chip Technology

Scientists open door to better solar cells, superconductors and hard-drives: Research enhances understanding of materials interfaces April 14th, 2014

Obducat has launched a new generation of SINDRE® Nano Imprint production system April 11th, 2014

Scientists in Singapore develop novel ultra-fast electrical circuits using light-generated tunneling currents April 10th, 2014

Clean Shot at Manufacturing Course…For Less April 9th, 2014

Discoveries

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

Scientists Capture Ultrafast Snapshots of Light-Driven Superconductivity: X-rays reveal how rapidly vanishing 'charge stripes' may be behind laser-induced high-temperature superconductivity April 16th, 2014

Scientists observe quantum superconductor-metal transition and superconducting glass: A team including MIPT physicist observed quantum superconductor-metal transition and superconducting glass April 16th, 2014

Announcements

More effective kidney stone treatment, from the macroscopic to the nanoscale April 17th, 2014

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

INSCX™ exchange to present Exchange trade reporting mechanism for engineered nanomaterials (NMs) to UK regulation agencies, insurers and upstream/downstream users April 17th, 2014

Transparent Conductive Films and Sensors Are Hot Segments in Printed Electronics: Start-ups in these fields show above-average momentum, while companies working on emissive displays such as OLED are fading, Lux Research says April 17th, 2014

Energy

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

Scientists Capture Ultrafast Snapshots of Light-Driven Superconductivity: X-rays reveal how rapidly vanishing 'charge stripes' may be behind laser-induced high-temperature superconductivity April 16th, 2014

Engineers develop new materials for hydrogen storage April 15th, 2014

A molecular approach to solar power: Switchable material could harness the power of the sun — even when it’s not shining April 15th, 2014

Solar/Photovoltaic

High-temperature plasmonics eyed for solar, computer innovation April 17th, 2014

A molecular approach to solar power: Switchable material could harness the power of the sun — even when it’s not shining April 15th, 2014

Shiny quantum dots brighten future of solar cells: Photovoltaic solar-panel windows could be next for your house April 14th, 2014

Scientists open door to better solar cells, superconductors and hard-drives: Research enhances understanding of materials interfaces April 14th, 2014

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







  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More














ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2014 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE