Search Menu
Photonics Media Photonics Marketplace Photonics Spectra BioPhotonics Vision Spectra Photonics Showcase Photonics ProdSpec Photonics Handbook

Black Silicon Boosts Solar Cell Efficiency

Facebook Twitter LinkedIn Email
HELSINKI, Feb. 7, 2013 — Black silicon surfaces on solar cells can elevate their efficiency to new levels, research out of Finland reports.

Black silicon, with a surface reflectance of below 1 percent, has long been an attractive material for use in photovoltaic and other photonic applications. However, black silicon (b-Si) has poor charge carrier transport properties and increased surface recombination, resulting in poor spectral response, most notably at short wavelengths.

Black silicon surfaces on solar cells can elevate the efficiency to new levels, research at Aalto University has found. Courtesy of Päivikki Repo.

Now, with more effective surface passivation methods available, b-Si has become a viable material for solar cells and other technologies, said Päivikki Repo, a researcher at Aalto University.

Together with scientists at Fraunhofer Institute for Solar Energy Systems ISE, Repo and colleagues developed black-silicon-based high-efficiency solar cells with high-sensitivity light response by applying atomic layer coating to the cell. This yielded extremely good surface passivation of the silicon nanostructures while simultaneously reducing the reflectance at all wavelengths.

The research appeared in the Journal of Photovoltaics (doi: 10.1109/JPHOTOV.2012.2210031). 

For more information, visit:
Feb 2013
spectral response
Measure of a detector's signal during exposure to radiation of a constant power level and varying wavelength.
Aalto Universityb-SiBasic Scienceblack siliconenergyEuropeFinlandFraunhofer Institute for Solar Energy Systems ISEGermanygreen photonicsPäivikki RepophotovoltaicsResearch & Technologysilicon nanostructuressolar cell efficiencysolar cellsspectral responsesurface passivation

back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2023 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA, [email protected]

Photonics Media, Laurin Publishing
x We deliver – right to your inbox. Subscribe FREE to our newsletters.
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.