Best of the Week
Most Popular
1. Investing in a Bubble Mania Stock Market Trending Towards Financial Crisis 2.0 CRASH! - 9th Sep 21
2.Tech Stocks Bubble Valuations 2000 vs 2021 - 25th Sep 21
3.Stock Market FOMO Going into Crash Season - 8th Oct 21
4.Stock Market FOMO Hits September Brick Wall - Evergrande China's Lehman's Moment - 22nd Sep 21
5.Crypto Bubble BURSTS! BTC, ETH, XRP CRASH! NiceHash Seizes Funds on Account Halting ALL Withdrawals! - 19th May 21
6.How to Protect Your Self From a Stock Market CRASH / Bear Market? - 14th Oct 21
7.AI Stocks Portfolio Buying and Selling Levels Going Into Market Correction - 11th Oct 21
8.Why Silver Price Could Crash by 20%! - 5th Oct 21
9.Powell: Inflation Might Not Be Transitory, After All - 3rd Oct 21
10.Global Stock Markets Topped 60 Days Before the US Stocks Peaked - 23rd Sep 21
Last 7 days
Quantum AI Stocks Investing Priority - 26th Jan 22
Is Everyone Going To Be Right About This Stocks Bear Market?- 26th Jan 22
Stock Market Glass Half Empty or Half Full? - 26th Jan 22
Stock Market Quoted As Saying 'The Reports Of My Demise Are Greatly Exaggerated' - 26th Jan 22
The Synthetic Dividend Option To Generate Profits - 26th Jan 22
The Beginner's Guide to Credit Repair - 26th Jan 22
AI Tech Stocks State Going into the CRASH and Capitalising on the Metaverse - 25th Jan 22
Stock Market Relief Rally, Maybe? - 25th Jan 22
Why Gold’s Latest Rally Is Nothing to Get Excited About - 25th Jan 22
Gold Slides and Rebounds in 2022 - 25th Jan 22
Gold; a stellar picture - 25th Jan 22
CATHY WOOD ARK GARBAGE ARK Funds Heading for 90% STOCK CRASH! - 22nd Jan 22
Gold Is the Belle of the Ball. Will Its Dance Turn Bearish? - 22nd Jan 22
Best Neighborhoods to Buy Real Estate in San Diego - 22nd Jan 22
Stock Market January PANIC AI Tech Stocks Buying Opp - Trend Forecast 2022 - 21st Jan 21
How to Get Rich in the MetaVerse - 20th Jan 21
Should you Buy Payment Disruptor Stocks in 2022? - 20th Jan 21
2022 the Year of Smart devices, Electric Vehicles, and AI Startups - 20th Jan 21
Oil Markets More Animated by Geopolitics, Supply, and Demand - 20th Jan 21
WARNING - AI STOCK MARKET CRASH / BEAR SWITCH TRIGGERED! - 19th Jan 22
Fake It Till You Make It: Will Silver’s Motto Work on Gold? - 19th Jan 22
Crude Oil Smashing Stocks - 19th Jan 22
US Stagflation: The Global Risk of 2022 - 19th Jan 22
Stock Market Trend Forecast Early 2022 - Tech Growth Value Stocks Rotation - 18th Jan 22
Stock Market Sentiment Speaks: Are We Setting Up For A 'Mini-Crash'? - 18th Jan 22
Mobile Sports Betting is on a rise: Here’s why - 18th Jan 22
Exponential AI Stocks Mega-trend - 17th Jan 22
THE NEXT BITCOIN - 17th Jan 22
Gold Price Predictions for 2022 - 17th Jan 22
How Do Debt Relief Services Work To Reduce The Amount You Owe? - 17th Jan 22
RIVIAN IPO Illustrates We are in the Mother of all Stock Market Bubbles - 16th Jan 22
All Market Eyes on Copper - 16th Jan 22
The US Dollar Had a Slip-Up, but Gold Turned a Blind Eye to It - 16th Jan 22
A Stock Market Top for the Ages - 16th Jan 22
FREETRADE - Stock Investing Platform, the Good, Bad and Ugly Review, Free Shares, Cancelled Orders - 15th Jan 22
WD 14tb My Book External Drive Unboxing, Testing and Benchmark Performance Amazon Buy Review - 15th Jan 22
Toyland Ferris Wheel Birthday Fun at Gulliver's Rother Valley UK Theme Park 2022 - 15th Jan 22
What You Should Know About a TailoredPay High Risk Merchant Account - 15th Jan 22

Market Oracle FREE Newsletter

How to Protect your Wealth by Investing in AI Tech Stocks

Solar Energy Breakthrough: Cheap Quantum Dot Solar Paint

Commodities / Renewable Energy Dec 28, 2011 - 12:34 PM GMT

By: OilPrice_Com

Commodities

Researchers have reduced the preparation time of quantum dot solar cells to less than an hour by changing the form to a one-coat quantum dot solar paint.

How?


Titanium dioxide (TiO2) nanoparticles are coated with cadmium sulfide (CdS) or cadmium selenide (CdSe.) The composite nanoparticles, when mixed with a solvent, form a paste that can be applied as one-step paint to a transparent conducting material, which creates electricity when exposed to light.

Although the paint form is currently about five times less efficient than the highest recorded efficiency for the multifilm form, the researchers predict that its efficiency can be improved, which could lead to a simple and economically viable way to prepare solar cells.

The scientists responsible for the research breakthrough, Mathew P. Genovese of the University of Waterloo in Canada, with Ian V. Lightcap and Prashant V. Kamat of the Radiation Laboratory and Department of Chemistry and Biochemistry at the University of Notre Dame in Indiana, will be publishing their study in an upcoming issue of the American Chemical Society's publication Nano.

During an interview with PhysOrg.com Professor Kamat, John A. Zahm Professor of Science in Chemistry and Biochemistry and an investigator in Notre Dame's Center for Nano Science and Technology (NDnano) and who led the research, explained, "Quantum dots are semiconductor nanocrystals which exhibit size-dependent optical and electronic properties. In a quantum dot sensitized solar cell, the excitation of semiconductor quantum dot or semiconductor nanocrystal is followed by electron injection into TiO2 nanoparticles. These electrons are then transferred to the collecting electrode surface to generate photocurrent.

The holes that remain in the semiconductor quantum dot are removed by a hole conductor or redox couple and are transported to a counter electrode. If we can optimize the paint preparation, it should be possible for anyone to open a bottle (or a can in the long run) and apply it to a conducting surface. This will decrease the variability between lab to lab or person to person as one encounters in a multi-step process. Having fewer fabrication steps and ambient preparative conditions should provide an economically viable transformative technology."

During their research the scientists tested a number of different compounds, but found that a composite of mixed CdS/TiO2 and CdSe/TiO2 nanoparticles performed best, particularly when the CdS and CdSe was deposited directly on the TiO2 nanoparticles as a coating.

Describing their work they said that the nanoparticles were suspended in a water-alcohol mixture to create the binder-free paste, which was then applied to conducting glass surface and annealed at 200 degrees Centigrade. When coated on a glass electrode, the paint has an overall power conversion efficiency exceeding 1 percent. Although some multifilm quantum dot solar cells have efficiencies greater than 5 percent, the scientists believe that using different quantum dots and further optimization could significantly increase the efficiency of the paint.

Potential uses could include painting electronic devices such as cell phones to recharge their batteries, along with larger electrical devices such as computers, while rooftops, windows, and cars could be coated as well.

The scientists' work has attracted some major governmental interest and the Department of Energy's Office of Basic Energy Sciences is funding their research.

Professor Kamat concluded in a Notre Dame press release, "We want to do something transformative, to move beyond current silicon-based solar technology. The best light-to-energy conversion efficiency we've reached so far is one percent, which is well behind the usual 10 to 15 percent efficiency of commercial silicon solar cells. But this paint can be made cheaply and in large quantities. If we can improve the efficiency somewhat, we may be able to make a real difference in meeting energy needs in the future. That's why we've christened the new paint, Sun-Believable."

Source: http://oilprice.com/Alternative-Energy/Solar-Energy/...

This article was written by Dr. John CK Daly for Oilprice.com who offer detailed analysis on Crude Oil, Geopolitics, Gold and most other commodities. They also provide free political and economic intelligence to help investors gain a greater understanding of world events and the impact they have on certain regions and sectors. Visit: http://www.oilprice.com

© 2011 Copyright OilPrice.com- All Rights Reserved
Disclaimer: The above is a matter of opinion provided for general information purposes only and is not intended as investment advice. Information and analysis above are derived from sources and utilising methods believed to be reliable, but we cannot accept responsibility for any losses you may incur as a result of this analysis. Individuals should consult with their personal financial advisors.


© 2005-2019 http://www.MarketOracle.co.uk - The Market Oracle is a FREE Daily Financial Markets Analysis & Forecasting online publication.


Comments

Marine Paint
29 Dec 11, 04:04
RE: Solar energy breakthrough

Hello,

Just wanted to post a quick comment to tell you how much I enjoyed reading this solar energy article. I'm amazed how the paints efficiency can be improved. Pleased to see a more economically viable way to prepare solar cells.

Thanks!


Post Comment

Only logged in users are allowed to post comments. Register/ Log in