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:2/11/2016)... Florida , February 11, 2016 ... PositiveID Corporation ("PositiveID" or "Company") (OTCQB: PSID), a ... announced today that its Thermomedics subsidiary, which markets ... on its growth plan in January 2016, including ... distributors, increasing sequential monthly sales growth, and establishing ...
(Date:2/11/2016)... MIAMI (PRWEB) , ... February 11, 2016 , ... ... in regenerative medicine, has announced a new agreement with Bankok,Thailand-based Global Stem Cells ... researchers and phsyicians in 15 Latin American countries, including Mexico, Costa Rica, Dominican ...
(Date:2/10/2016)... , February 10, 2016 Early-career researchers ... , Peru , Uganda and ... life-enhancing work in health and nutrition   Indonesia ... Uganda and Yemen are being ... and epidemiology. They are also celebrated for mentoring young women scientists who ...
(Date:2/10/2016)... ASAE is introducing a hybrid membership model which will ... of joining or renewing through an organizational purchasing model. ... every employee in any size association or AMC office ... member benefits.   John H. Graham, IV ... allow organizations of any size and their employees to ...
Breaking Biology Technology:
(Date:2/11/2016)... LIVERMORE, Calif. , Feb. 11, 2016  Vigilant Solutions ... commercial LPR data are being used by Lee,s ... residents, including the recent location and arrest of a homicide ... Lee,s Summit covers around 65 square miles and ... Police Department has a single mobile license plate ...
(Date:2/9/2016)... Aware, Inc. (NASDAQ: AWRE ), a leading supplier of biometrics ... and year ended December 31, 2015.  --> ... was $6.9 million, an increase of 61% compared to $4.3 million ... quarter of 2015 was $2.6 million compared to $0.2 million in ... --> Higher revenue and operating income in the fourth ...
(Date:2/8/2016)... 2016 Worldcore is ... innovation for clients, comfort and unbeatable security, with ... --> Worldcore is the first EU-regulated ... comfort and unbeatable security, with a Voice Biometrics ... Worldcore is the first EU-regulated global payment ...
Breaking Biology News(10 mins):