Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Harris & Harris Group Notes Announcements by Its Portfolio Companies During the Third Quarter of 2016 September 30th, 2016

INVECAS to Enable ASIC Designs for Tomorrows Intelligent Systems on GLOBALFOUNDRIES' FDX Technology: INVECAS to Collaborate with GLOBALFOUNDRIES to Provide IP and End-to-End ASIC Design Services on 22FDX and 12FDX Technologies September 30th, 2016

How to power up graphene implants without frying cells: New analysis finds way to safely conduct heat from graphene to biological tissues September 30th, 2016

Innovation in Nanotechnology is Focus of Symposium: Annual event brings international experts to Northwestern Oct. 6 September 29th, 2016

Chip Technology

INVECAS to Enable ASIC Designs for Tomorrows Intelligent Systems on GLOBALFOUNDRIES' FDX Technology: INVECAS to Collaborate with GLOBALFOUNDRIES to Provide IP and End-to-End ASIC Design Services on 22FDX and 12FDX Technologies September 30th, 2016

Picosun patents ALD nanolaminate to prevent electronics from overheating September 28th, 2016

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Mexican scientist in the Netherlands seeks to achieve data transmission ... speed of light September 20th, 2016

Discoveries

How to power up graphene implants without frying cells: New analysis finds way to safely conduct heat from graphene to biological tissues September 30th, 2016

Nanosensors could help determine tumors ability to remodel tissue: Measuring enzyme levels could help doctors select appropriate treatments September 29th, 2016

Fighting cancer with sticky nanoparticles September 27th, 2016

Gold nanoparticles conjugated quercetin inhibits epithelial-mesenchymal transition, angiogenesis and invasiveness via EGFR/VEGFR-2 mediated pathway in breast cancer September 27th, 2016

Announcements

Harris & Harris Group Notes Announcements by Its Portfolio Companies During the Third Quarter of 2016 September 30th, 2016

INVECAS to Enable ASIC Designs for Tomorrows Intelligent Systems on GLOBALFOUNDRIES' FDX Technology: INVECAS to Collaborate with GLOBALFOUNDRIES to Provide IP and End-to-End ASIC Design Services on 22FDX and 12FDX Technologies September 30th, 2016

How to power up graphene implants without frying cells: New analysis finds way to safely conduct heat from graphene to biological tissues September 30th, 2016

Innovation in Nanotechnology is Focus of Symposium: Annual event brings international experts to Northwestern Oct. 6 September 29th, 2016

Energy

Cambrios at CEATEC - Japan 2016 September 29th, 2016

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Researchers at the Catalan Institute of Nanoscience and Nanotechnology show that bending semiconductors generates electricity September 26th, 2016

Semiconducting inorganic double helix: New flexible semiconductor for electronics, solar technology and photo catalysis September 15th, 2016

Solar/Photovoltaic

Cambrios at CEATEC - Japan 2016 September 29th, 2016

Crystalline Fault Lines Provide Pathway for Solar Cell Current: New tomographic AFM imaging technique reveals that microstructural defects, generally thought to be detrimental, actually improve conductivity in cadmium telluride solar cells September 26th, 2016

Semiconducting inorganic double helix: New flexible semiconductor for electronics, solar technology and photo catalysis September 15th, 2016

New perovskite research discoveries may lead to solar cell, LED advances September 12th, 2016

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







Car Brands
Buy website traffic