Navigation Links
Black silicon can take efficiency of solar cells to new levels
Date:1/25/2013

This press release is available in German.

Scientists at Aalto University, Finland, have demonstrated results that show a huge improvement in the light absorption and the surface passivation on highly absorbing silicon nanostructures. This has been achieved by applying atomic layer coating. The results advance the development of devices that require high sensitivity light response such as high efficiency solar cells.

This method provides extremely good surface passivation. Simultaneously, it reduces the reflectance further at all wavelengths. These results are very promising considering the use of black silicon (b-Si) surfaces on solar cells to increase the efficiency to completely new levels, tells Pivikki Repo, a researcher at Aalto University.

More effective surface passivation methods than those used in the past have been needed to make black silicon a viable material for commercial applications. Good surface passivation is crucial in photonic applications such as solar cells. So far, the poor charge carrier transport properties attributed to nanostructured surfaces have been more detrimental for the final device operation than the gain obtained from the reduced reflectance.

Black silicon can also be used in other technologies than solar cells. Numerous applications suggested for b-Si include drug analysis.

Black silicon (b-Si) has been a subject of great interest in various fields including photovoltaics for its ability to reduce the surface reflectance even below 1 per cent. However, many b-Si applications - especially solar cells - suffer from increased surface recombination resulting in poor spectral response. This is particularly problematic at short wavelengths.


'/>"/>
Contact: Pivikki Repo
paivikki.repo@aalto.fi
358-504-361-156
Aalto University
Source:Eurekalert  

Page: 1

Related biology news :

1. Clamorous city blackbirds
2. Biologists unlock black box to underground world
3. Strength training improves vascular function in young black men
4. Black piranha, megapiranha have most powerful bites of fish living or extinct, finds GW researcher
5. The dark side of kerosene lamps: High black-carbon emissions
6. Study IDs kerosene lamps as big source of black carbon
7. Le Rouge et le Noir: Where the black dahlia gets its color
8. Lack of vitamin D contributes to pain in black Americans with knee osteoarthritis
9. Scientists find aphid resistance in black raspberry
10. Human impact felt on Black Sea long before industrial era
11. Black belts white matter shows how a powerful punch comes from the brain
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Black silicon can take efficiency of solar cells to new levels
(Date:4/24/2017)... April 24, 2017 Janice Kephart ... with  Identity Strategy Partners, LLP (IdSP) , today ... without President Trump,s March 6, 2017 Executive ... , refugee vetting can be instilled with greater confidence, ... now, all refugee applications are suspended by until ...
(Date:4/19/2017)... April 19, 2017 The global ... landscape is marked by the presence of several large ... held by five major players - 3M Cogent, NEC ... accounted for nearly 61% of the global military biometric ... in the global military biometrics market boast global presence, ...
(Date:4/18/2017)... a global expert in SoC-based imaging and computing solutions, has developed ... the company,s hybrid codec technology. A demonstration utilizing TeraFaces ® , ... showcased during the upcoming Medtec Japan at Tokyo Big Sight April ... Vegas Convention Center April 24-27. ... Click here for an image of the M820 ...
Breaking Biology News(10 mins):
(Date:4/28/2017)... USA (PRWEB) , ... April 28, 2017 , ... ... seminar on regulatory compliance requirements for life science products comes to New Orleans, ... structure of the regulatory agencies in Latin America and discuss local cultural nuances ...
(Date:4/28/2017)... ... 28, 2017 , ... Cynvenio Biosystems, Inc. a leader in personalized ... cancer monitoring (NEAT) study in partnership with Allentown, PA-based TME Research . The ... be monitored over two years with Cynvenio’s ClearID Breast Cancer blood test. The study ...
(Date:4/28/2017)... ... April 28, 2017 , ... While things have been quiet ... the company and provide a new outlook for the future. As a continued ... new management with the retirement of Mr. Siegel as CEO. With the new adjustments ...
(Date:4/28/2017)... ... April 28, 2017 , ... KCAS Bioanalytical and Biomarker ... ng/mL lower limit (LLOQ) assay for nicotine and two key metabolites cotinine and ... trace nicotine assay meets additional needs of tobacco industry that need to detect ...
Breaking Biology Technology: