Vitex touts flexible CIGS lifetime achievement

June 12, 2008 – Vitex Systems says it has achieved a “key breakthrough” in protecting flexible copper indium gallium selenide (CIGS) solar cells with its “Flexible Glass,” achieving 1100 hrs of testing in high-temperature and humidity conditions with stable efficiency.

CIGS has shown promise to achieve production efficiencies using low-cost roll-to-roll manufacturing, but like cadmium telluride (CdTe) cells they are sensitive to moisture and oxygen, and commercially-available flexible CIGS solar cells typically carry a lifetime guarantee of only a couple of years, the company notes. Encapsulating in rigid glass extends that lifetime but also adds weight and costs (production and shipping/installation) as well as less flexibility in packaging.

The CIGS cells used for the 1100hr tests at the Pacific Northwest National Laboratory were made on stainless-steel foil laminated with Vitex’s Flexible Glass 200 (thickness ~0.3mm) with a proprietary lamination process. Samples were exposed to damp heat (85°C, 85% relative humidity) for >1000 hrs. They were shown to maintain >98% of their original efficiency after 1100 hrs, exceeding requirements of the International Electrotechnical Commission’s (IEC) 61646 standard, the company noted.

Tests are continuing to determine the devices’ ultimate lifetime, though Vitex’s Chyi-Shan Suen, director of business development, notes that early internal tests have extended to >4000 hours under such conditions, maintaining ~80% of the cell’s original performance. The company is now seeking licensees to manufacture and commercialize the Flexible Glass 200 films to widen availability to more solar-cell manufacturers.

POST A COMMENT

Easily post a comment below using your Linkedin, Twitter, Google or Facebook account. Comments won't automatically be posted to your social media accounts unless you select to share.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

LIVE NEWS FEED

NEW PRODUCTS

Pfeiffer Vacuum introduces HiPace 2800 turbopump for ion implantation applications
07/06/2016Pfeiffer Vacuum has introduced the HiPace 2800 IT turbopump that is designed for ion implantation applications....
NanoFocus AG introduces new inspection system for semiconductors industry
05/31/2016NanoFocus AG, the developer and manufacturer of optical 3D surface measuring technology, introduces the new measuring system µ...
Edwards launches new vacuum pumps at SEMICON China 2016
03/15/2016Edwards announced the availability of two new vacuum pump product families at SEMICON China: the iXM Series for semiconductor etch and chemical v...