Cadmium telluride Suppliers

Cadmium telluride is the first and only thin film photovoltaic technology to surpass
crystalline silicon PV in cheapness for a significant portion of the PV market, namely in
multi-kilowatt systems. Smart Energy Capital, together with its strategic partner Tremco
Roofing, developed the rooftop PV projects for both school districts, which included
securing Pennsylvania solar energy grants (initially for Bald Eagle and subsequently for
Bellefonte) and arranging the sale of solar renewable energy certificates. INDU financed
all of the construction costs for the projects.
First Solar modules use the stable compound cadmium telluride (CdTe) as the
semiconductor. Cadmium telluride is good. This safe and advanced semiconductor technology
contributes to First Solar's ability to provide clean, affordable, and sustainable energy
solutions.
CdTe is used as an infrared optical material for optical windows and lenses but it has
small application and is limited by its toxicity such that few optical houses will
consider working with it. Privately held Abound Solar is the young colt with a rich
patron. An early form of CdTe for IR use was marketed under the trademarked name of
Irtran-6 but this is obsolete. CdTe PV technology has the smallest carbon footprint and
fastest energy payback time of current PV technologies when measured on a life cycle
basis. Using CdTe in PV modules converts cadmium, a waste byproduct of zinc refining,
into the stable compound of CdTe where it is safely sequestered for the 25+ year lifetime
of the module. The use of cadmium in various products is also coming under increasingly
stringent governmental regulation. Future regulation in this area could impact the
manufacture and sale of cadmium-containing solar modules and could require us to make
unforeseen environmental expenditures or limit our ability to sell and distribute our
products. CdTe is also applied for electro-optic modulators. It has the greatest electro
-optic coefficient of the linear electro-optic effect among II-VI compound crystals.

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