Nanotechnology Now

Our NanoNews Digest Sponsors





Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Imec reports record efficiencies for large-area epitaxial thin-film silicon solar cells

Imec epitaxial thin-film silicon solar cell on low-quality substrate with screen printed metal lines achieving efficiencies of up to 14.7%.
Imec epitaxial thin-film silicon solar cell on low-quality substrate with screen printed metal lines achieving efficiencies of up to 14.7%.

Abstract:
Imec has realized large-area (70cm2) epitaxial solar cells with efficiencies of up to 16.3% on high-quality substrates. And efficiencies of up to 14.7% were achieved on large-area low-quality substrates, showing the potential of thin-film epitaxial solar cells for industrial manufacturing. The results were achieved within imec's silicon solar cell industrial affiliation program (IIAP) that explores and develops advanced process technologies aiming a sharp reduction in silicon use, whilst increasing cell efficiency and hence further lowering substantially the cost per Watt peak.

Imec reports record efficiencies for large-area epitaxial thin-film silicon solar cells

Leuven, Belgium | Posted on July 14th, 2010

Besides wafer-based bulk silicon solar cells imec aims at developing epitaxial thin-film (<20µm) silicon solar cells grown on low-cost silicon carriers within its silicon solar cell IIAP.. The epitaxial thin-film process on low-cost silicon carriers is generically similar to the bulk process and the epi-process can be implemented with limited equipment investment in an existing crystalline silicon solar cell manufacturing line. To improve the optical confinement of light in the active part of the cell, a buried porous Si reflector is developed.

Imec realized 20ěm thick high-quality epitaxial silicon stacks both on top of a highly-doped high-quality substrate and on a low-cost, UMG (upgraded metallurgic grade)-type, multi-crystalline Si substrate. The p+-type back surface field (BSF), the p-type base and the n-type front-side emitter were grown by chemical vapor deposition. The light-trapping scheme consists of plasma texturing of the front surface in combination with an internal porous silicon Bragg reflector positioned at the epitaxial/substrate interface. The cells on the high-quality substrate are contacted with copper plating. For the cells made on the low-quality substrates, the metallization is realized with screenprinting, which is the final step after the formation of the diffused front surface field (FSF) and the silicon nitride antireflection coating. In this way, the epitaxially grown ‘wafer equivalent' substrates are fully compatible with standard industrial (bulk) solar cell processing.

"These efficiencies of up to 16.3% on high-quality substrates and of up to14.7 % on low-cost substrates show that industrial-level efficiencies are within reach for this technology;" said Jef Poortmans, director imec energy/solar program. "By implementing copper-based contact schemes, we can further increase the efficiency making epitaxial thin-film silicon solar cells on low-cost wafers an interesting industrial technology."

####

About imec
Imec performs world-leading research in nanoelectronics. Imec leverages its scientific knowledge with the innovative power of its global partnerships in ICT, healthcare and energy. Imec delivers industry-relevant technology solutions. In a unique high-tech environment, its international top talent is committed to providing the building blocks for a better life in a sustainable society. Imec is headquartered in Leuven, Belgium, and has offices in Belgium, the Netherlands, Taiwan, US, China and Japan. Its staff of more than 1,750 people includes over 550 industrial residents and guest researchers. In 2009, imec's revenue (P&L) was 275 million euro. Further information on imec can be found at www.imec.be.

NOTE TO EDITORS: Imec is a registered trademark for the activities of IMEC International (a legal entity set up under Belgian law as a "stichting van openbaar nut”), imec Belgium (IMEC vzw supported by the Flemish Government), imec the Netherlands (Stichting IMEC Nederland, part of Holst Centre which is supported by the Dutch Government), imec Taiwan (IMEC Taiwan Co.) and imec China (IMEC Microelectronics (Shangai) Co. Ltd.).

For more information, please click here

Contacts:
imec: Katrien Marent, Director of External Communications, T: +32 16 28 18 80, Mobile: +32 474 30 28 66,

Barbara Kalkis, Maestro Marketing & PR, T: +1 408 996 9975, M: +1 408 529 4210,

Copyright © imec

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Thin films

Electrospray solves longstanding problem in Langmuir-Blodgett assembly: The electrospray spreads water-soluble solvents on water while minimizing mixing August 20th, 2015

Scientists achieve major breakthrough in thin-film magnetism August 17th, 2015

Rice, Penn State open center for 2-D coatings: National Science Foundation selects universities to develop atom-thin materials with industry partners August 13th, 2015

Thin films offer promise for ferroelectric devices: Researchers at Tokyo Institute of Technology demystify the ferroelectric properties observed in hafnium-oxide-based thin films, revealing a potentially useful device material August 3rd, 2015

Announcements

Small but heading for the big time: Nanobiotix half year results for the six months ended 30 June 2015, in line with expectations: Major clinical achievements and corporate developments August 28th, 2015

A new technique to make drugs more soluble August 28th, 2015

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanolab Technologies LEAPS Forward with High-Performance Analysis Services to the World: Nanolab Orders Advanced Local Electrode Atom Probe (LEAP®) Microscope from CAMECA Unit of AMETEK Materials Analysis Division August 27th, 2015

Energy

Nanocatalysts improve processes for the petrochemical industry August 28th, 2015

Nanotechnology that will impact the Security & Defense sectors to be discussed at NanoSD2015 conference August 25th, 2015

Industrial Nanotech, Inc. Provides Update On Hospital Project, PCAOB Audit, and New Heat Shield™ Line August 24th, 2015

Novel nanostructures for efficient long-range energy transport August 21st, 2015

Solar/Photovoltaic

CWRU researchers efficiently charge a lithium-ion battery with solar cell: Coupling with perovskite solar cell holds potential for cleaner cars and more August 27th, 2015

Novel nanostructures for efficient long-range energy transport August 21st, 2015

Charge transport in hybrid silicon solar cells August 17th, 2015

Nano Electrolyte Additives Increase Efficiency of Solar Cells August 10th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







Car Brands
Buy website traffic