MIT Builds All-Carbon Buckyball and Nanotube Solar Cell
June 22, 2012 11:10 PM
comment(s) - last by
Cell harvests near infrared spectrum, is expected to be put to use in hybrid designs
Traditional photovoltaic solar cells -- based on silicon or thin films -- tend to be relatively good at capturing the visible light spectrum, but they miss out on a great deal of the full spectrum of light striking the Earth. Efforts to remedy to this loss have ranged
I. First All-Carbon Cell Lands
Now researchers at
Professor Michael Strano
's materials lab at the
Massachusetts Institute of Technology
have devised a new type of solar cell that reclaims part of that lost spectrum -- the near infrared light that makes up 40 percent of the solar energy striking the Earth.
The cell is a highly unusual all-carbon design consisting of an almost laughably novel mix of Buckyball (C60) and nanotube carbon. The cell relies on having very pure, single-walled nanotubes in one of the two possible configurations of the structurized carbon.
The new cell combines buckyballs [pictured] with carbon nanotubes.
[Image Source: Neatorama]
Describes Professor Strano, "This is the first all-carbon photovoltaic cell. It has only been within the last few years or so that it has been possible to hand someone a vial of just one type of carbon nanotube."
Past groups have
worked on nanotube cells
as well, but their designs required polymer to stabilize the nanotubes and collect the electrons knocked off by incident light. By contrast the new cell is all-carbon, yet appears relatively stable in air.
II. A Ways to Go
The cell is still very much in the proof-of-concept phase, with a lowly 0.1 percent conversion efficiency. Still, Professor Strano imagines refined successor models being paired with traditional semiconductor/thin-film cells to form hybrid cells that offer more complete harvest of spectrum.
While the mixture of nanotubes is currently relatively pure, impurities are still having a major impact on efficiencies says lead author, graduate researcher Rishabh Jain. He comments, "It's pretty clear to us the kinds of things that need to happen to increase the efficiency. It’s very much a model system and other groups will help to increase the efficiency."
, an assistant professor of materials science and engineering at the
University of Wisconsin at Madison
, acting as an independent commentator praises the work, stating, "Carbon nanotubes offer tantalizing possibilities for increasing the efficiency of solar cells and are kind of like photovoltaic polymers on steroids is exciting because it demonstrates photovoltaic power conversion using an active layer that is entirely made from carbon. This seems like a very promising direction that will eventually allow for nanotubes’ promise to be more fully harnessed."
A layer of the researchers' mixed-carbon cell could one day be "painted" beneath a transparent thin-film cell.
An atomic micrograph of the novel carbon cell [Image Source: Rishabh Jain et al.]
Other reserachers involved in the study include graduate students Rachel Howden, Steven Shimizu and Andrew Hilmer; postdoc Thomas McNicholas; and professor of chemical engineering Karen Gleason. The research was funded by the
National Science Foundation
U.S. Department of Defense
graduate fellowship grants, and a donation from Italian company Eni.
The work is published in the journal
This article is over a month old, voting and posting comments is disabled
6/23/2012 7:52:04 PM
Might just be careless grammer, but this is backwards:
"Past groups have worked on nanotube cells as well, but their designs required polymer to stabilize the nanotubes and collect the electrons knocked off by incident light."
The electrons are "knocked off" in the polymer. The carbon nanotubes/fullerenes (not the polymer) then collect the electrons and transport them to the cathode.
"This is about the Internet. Everything on the Internet is encrypted. This is not a BlackBerry-only issue. If they can't deal with the Internet, they should shut it off." -- RIM co-CEO Michael Lazaridis
Q-BICs -- Doped Quantum Dots -- Harvest Wasted Infrared Solar Spectrum
January 25, 2012, 11:04 AM
Scientists Cook Up Artificial Leaf, Quantum Dots for Solar Cells
March 29, 2011, 8:32 AM
New Process Could Create Cheap, Flexible Solar Panels Based on Polymers
July 25, 2007, 1:00 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Cool Science Video: This is What a McDonald's Burger Looks Like in Your Stomach
April 7, 2015, 1:43 PM
Most Popular Articles
Exclusive: If Intel and Micron's "Xpoint" is 3D Phase Change Memory, Boy Did They Patent It
July 29, 2015, 10:52 PM
Windows 10 to Get New Features in October Service Release 2 (SR2)
July 30, 2015, 5:50 PM
Cortana Help Button is Coming Soon for $23
July 30, 2015, 5:07 PM
Quick Note: Apple Watch to Get Brick and Mortar Boost From Best Buy
July 27, 2015, 3:00 PM
EA Set to Milk the Star Wars Cash Cow w/ Video Games
July 31, 2015, 12:36 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information