Navigation Links
TU Delft: cheap and efficient solar cell made possible by linked nanoparticles
Date:9/26/2011

Researchers of the Chemical Engineering department and the Kavli institute of Delft University of Technology in the Netherlands have demonstrated that electrons can move freely in layers of linked semiconductor nanoparticles under the influence of light. This new knowledge will be very useful for the development of cheap and efficient quantum dot solar cells. The researchers published their findings on Sunday 25 September on the website of the scientific journal Nature Nanotechnology.

Cheap and efficient

The current crystalline silicon solar panels are expensive to produce. Cheaper solar cells are available, but these are inefficient. For example, an organic solar cell has a maximum efficiency of 8%. One way of increasing the efficiency of cheap solar cells is the use of semiconductor nanoparticles, quantum dots. In theory, the efficiency of these cells can be increased to 44%. This is in part due to the avalanche effect, demonstrated by researchers from TU Delft and the FOM Foundation in 2008. In the current solar cells, an absorbed light particle can only excite one electron (creating an electron-hole pair), while in a quantum dot solar cell a light particle can excite several electrons. The more electrons that are excited, the greater the efficiency of the solar cell.

Linked nanoparticles

Up to now, the creation of electron-hole pairs under the influence of light was only demonstrated within the limits of a quantum dot. To be usable in solar cells, it is essential that electrons and holes are able to move. This is what creates an electrical current that can be collected at an electrode. Researchers from the same research group have now demonstrated that the electron-hole pairs can also move as free charges between the nanoparticles. To this end they linked nanoparticles together, using very small molecules, so that they were very densely clustered while still remaining separate from each other. The nanoparticles are so close together that every single light particle that is absorbed by the solar cell actually causes electrons to move.


'/>"/>

Contact: Ineke Boneschansker
i.boneschansker@tudelft.nl
31-015-278-8499
Delft University of Technology
Source:Eurekalert

Related biology technology :

1. GEECF: Spectrum Launches Zero Waste Philippines and Gears Towards Cheap Green Energy
2. Nanoscale dimensioning is fast, cheap with new NIST optical technique
3. Cheaper materials could be key to low-cost solar cells
4. Stanford researchers find a quicker, cheaper way to sort isotopes
5. Nanopillars promise cheap, efficient, flexible solar cells
6. Simple test could offer cheap solution to detecting landmines
7. Simple test could offer cheap solution to detecting landmines
8. Cheaper drugs, vaccines forecast as collaborations grow between developing countries biotech firms
9. James Bond Meets Cheaper by the Dozen: An Action Thriller the Entire Family Will Enjoy
10. Cheap catalyst made easy
11. Sugar boosters could lead to cheap, effective treatments for chronic bacterial infections
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/17/2017)... Cumberland Foreside, Maine (PRWEB) , ... January 17, ... ... to announce the addition of Rheumatoid Factor (RF) to its VALIDATE® SP2 calibration ... and Rheumatoid Factor in a human serum base. Each VALIDATE® SP2 kit is ...
(Date:1/17/2017)... DIEGO , Jan. 17, 2017  An ... School of Medicine and St. Boniface Hospital Albrechtsen ... for peripheral neuropathy, an unmet health need affecting ... the Journal of Clinical Investigation, their results identify ... that prevent and reverse neuronal injury in animal ...
(Date:1/17/2017)... 2017   Pulmatrix, Inc . (NASDAQ: ... inhaled therapies to address serious pulmonary diseases, today announced ... the lungs of CF patients, PUR1900, has been designated ... U.S. Food & Drug Administration. Under ... the development of novel drugs against important pathogens, Pulmatrix ...
(Date:1/17/2017)...  Only nine percent of U.S. consumers believe pharmaceutical ... 16 percent believe health insurance companies do, according to ... of U.S. adults believe health care providers (such as ... hospitals (23%). "We are in the midst ... , vice president of reputation management and public affairs ...
Breaking Biology Technology:
(Date:12/15/2016)... , Dec. 14, 2016 "Increase in mobile ... market" The mobile biometrics market is expected to grow ... billion by 2022, at a CAGR of 29.3% between ... such as the growing demand for smart devices, government ... "Software component is expected to grow at ...
(Date:12/7/2016)... , December 7, 2016 According to a new market ... Software Tool (Facial Expression, Voice Recognition), Service, Application Area, End User, And Region ... to grow from USD 6.72 Billion in 2016 to USD 36.07 Billion by ... Continue Reading ... MarketsandMarkets ...
(Date:12/6/2016)... -- Zimmer Biomet Holdings, Inc. (NYSE and SIX: ZBH) (the "Company") ... million principal amount of its 1.414% senior unsecured notes due ... unsecured notes due 2026. The closing of ... to the satisfaction of customary closing conditions.  The notes will ... The Company intends to use the net proceeds from ...
Breaking Biology News(10 mins):