Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Nature notices PKU's new solar battery in carbon nanotubes

Abstract:
Peking University (PKU) Professor Peng Lianmao published Research Efficient Photovoltage Multiplication in Carbon Nanotubes on Nature Photonics (2011, 5, PP.672-676), with PhD candidates from PKU School of Electronics Engineering and Computer Science, Yang Leijing and Wang Shengfu, as co-writers.

Nature notices PKU's new solar battery in carbon nanotubes

Beijing, China | Posted on November 24th, 2011

Nature Photonics is one of the periodicals belonging to the renowned journal Nature. The research paper contains major breakthrough in the study of nanoelectronic applications. It at the same time represents the new progress in the field of nanoelectronic applications made by Professor Peng Lianmao's team.

With the background that natural resource is more and more meager, solar power has many unsurpassable advantages as an alternative energy source. At present, global researches in solar photovoltage mainly focus on the study of photovoltaic devices based on new nanomaterials.

Carbon nanotubes are direct-bandgap materials that are not only useful for nanoelectronic applications, but also have the potential to make a significant impact on the next generation of photovoltaic technology. A semiconducting single-walled carbon nanotube (SWCNT) has an unusual band structure, as a result of which high-efficiency carrier multiplication effects have been predicted and observed, and films of SWCNTs with absorption close to 100% have been reported. Other important features for photovoltaic applications include high mobility and the availability of ohmic contacts for both electrons and holes. However, the photovoltage generated from a typical semiconducting SWCNT is less than 0.2V, which is too small for most practical photovoltaic applications. Given this background, the researchers successfully showed how this value was readily multiplied by using virtual contacts at the carbon nanotube, which turned to be an important and challenging job.

Professor Peng and his team worked out an approach, the key to which was the introduction of a local virtual contact to the CNT. This contact is virtual in the sense that it is not intended to be connected to the external circuit. In one example, more than 1.0V is generated from a 10-mm-long carbon nanotube with a single-cell photovoltage of 0.2V. This work was realized based on the forward researches conducted by the same team.

In 2008, the research group put forward a method to form carbon nanotube (CNT) diodes using asymmetrically contacts between electrodes. This research finding was published on Advanced Materials (2008, 20, 3258). On this basis, using almost the same but improved methods, the team invented the first carbon tube infrared light-emitting diode (LED), Nano Letters (2011, 11, 23) reported.

The study was supported by the China's National Basic Research Program, and funded by the National Natural Science Fund Committee (NNSFC).

Written by: Jiang Zhaohui
Edited by: Arthars

####

For more information, please click here

Copyright © Peking University

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 News Press

News and information

Scientific breakthrough in rechargeable batteries: Researchers from Singapore and Québec Team Up to Develop Next-Generation Materials to Power Electronic Devices and Electric Vehicles February 28th, 2015

First detailed microscopy evidence of bacteria at the lower size limit of life: Berkeley Lab research provides comprehensive description of ultra-small bacteria February 28th, 2015

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Nanotubes/Buckyballs

Chromium-Centered Cycloparaphenylene Rings as New Tools for Making Functionalized Nanocarbons February 24th, 2015

Building tailor-made DNA nanotubes step by step: New, block-by-block assembly method could pave way for applications in opto-electronics, drug delivery February 23rd, 2015

Half spheres for molecular circuits: Corannulene shows promising electronic properties February 17th, 2015

SouthWest Nanotechnologies CEO Dave Arthur Appointed to the Board of Affiliates of Rice University Professional Science Master’s Program February 13th, 2015

Discoveries

First detailed microscopy evidence of bacteria at the lower size limit of life: Berkeley Lab research provides comprehensive description of ultra-small bacteria February 28th, 2015

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Untangling DNA with a droplet of water, a pipet and a polymer: With the 'rolling droplet technique,' a DNA-injected water droplet rolls like a ball over a platelet, sticking the DNA to the plate surface February 27th, 2015

Announcements

Scientific breakthrough in rechargeable batteries: Researchers from Singapore and Québec Team Up to Develop Next-Generation Materials to Power Electronic Devices and Electric Vehicles February 28th, 2015

First detailed microscopy evidence of bacteria at the lower size limit of life: Berkeley Lab research provides comprehensive description of ultra-small bacteria February 28th, 2015

Leti to Offer Updates on Silicon Photonics Successes at OFC in LA February 27th, 2015

Moving molecule writes letters: Caging of molecules allows investigation of equilibrium thermodynamics February 27th, 2015

Energy

In quest for better lithium-air batteries, chemists boost carbon's stability: Nanoparticle coatings improve stability, cyclability of '3DOm' carbon February 25th, 2015

New nanowire structure absorbs light efficiently: Dual-type nanowire arrays can be used in applications such as LEDs and solar cells February 25th, 2015

Learning by eye: Silicon micro-funnels increase the efficiency of solar cells February 25th, 2015

Magnetic nanoparticles enhance performance of solar cells X-ray study points the way to higher energy yields February 25th, 2015

Battery Technology/Capacitors/Generators/Piezoelectrics/Thermoelectrics/Energy storage

Scientific breakthrough in rechargeable batteries: Researchers from Singapore and Québec Team Up to Develop Next-Generation Materials to Power Electronic Devices and Electric Vehicles February 28th, 2015

In quest for better lithium-air batteries, chemists boost carbon's stability: Nanoparticle coatings improve stability, cyclability of '3DOm' carbon February 25th, 2015

Dendrite eraser: New electrolyte rids batteries of short-circuiting fibers: Solution enables a battery with both high efficiency & current density February 24th, 2015

New Paper-like Material Could Boost Electric Vehicle Batteries: Researchers create silicon nanofibers 100 times thinner than human hair for potential applications in batteries for electric cars and personal electronics February 20th, 2015

Solar/Photovoltaic

New nanowire structure absorbs light efficiently: Dual-type nanowire arrays can be used in applications such as LEDs and solar cells February 25th, 2015

Learning by eye: Silicon micro-funnels increase the efficiency of solar cells February 25th, 2015

Magnetic nanoparticles enhance performance of solar cells X-ray study points the way to higher energy yields February 25th, 2015

Researchers enable solar cells to use more sunlight February 25th, 2015

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 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE