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PV array made of cadmium telluride (CdTe) solar panels Cadmium telluride (CdTe) photovoltaics is a photovoltaic (PV) technology based on the use of cadmium telluride in a thin semiconductor layer designed to absorb and convert sunlight into electricity.
Cadmium telluride solar cells are the world’s leading thin-film photovoltaic technology. As of 2023, global installed capacity has surpassed 30 GWp, with about 40% of that capacity located in the United States. Their architecture can be simplified into several stacked layers, from bottom to top:
SETO released the Cadmium Telluride PV Perspective Paper in January 2025, outlining the state of CdTe PV technology and SETO’s priorities to reduce costs, address materials availability, and support the scale-up of CdTe within the domestic utility-scale PV market. A large-scale solar array in Colorado with CdTe modules.
Cadmium telluride photovoltaic cells have negative impacts on both workers and the ecosystem. When inhaled or ingested the materials of CdTe cells are considered to be both toxic and carcinogenic by the US Occupational Safety and Health Administration.
Solar Smart Glass sets the standard in solar control glass. Manual and automatic tuning and variable / dimmable functionality for precise, unrivalled control of solar glare and heat. Made-to-order panels featuring Suspended Particle Device (SPD) film between 2 or more sheets of glass.
It can be manually or automatically “tuned” to precisely control the amount of light, glare and heat passing through a window. Solar Smart Glass sets the standard in solar control glass.
Delivering made-to-order switchable glass solutions for more than 20 years. spaces that adapt to users’ needs at the flick of a switch. Solar control smart glass controls solar glare and reduces the thermal transmittance through a glass façade, directly cutting down on associated HVAC costs.
9.5mm, 11.5mm or 13.5mm, and more available. Less than 10 seconds at room temperature. Whether on or off, our Solar product shields 99.5% of UV light. Driving voltage 110vAC. Power approximately 12 Watt/m sq. Smartglass provided the ideal solution – excellent quality and perfect privacy at the flip of a switch.
Recent installations of large First Solar CdTe PV systems were claimed to be competitive with other forms of solar energy: First Solar's 290- megawatt (MW) Agua Caliente project in Arizona is one of the largest photovoltaic power station ever built.
How Do They Compare to Other Panels? The Cadmium Telluride (CdTe) solar technology was first introduced in 1972 when Bonnet and Rabenhorst designed the CdS/CdTe heterojunction that allowed the manufacturing of CdTe solar cells. At first, CdTe panels achieved a 6% efficiency, but the efficiency has tripled to this day.
CdTe PV modules provide a beneficial and safe use for cadmium that would otherwise be stored for future use or disposed of in landfills as hazardous waste. Mining byproducts can be converted into a stable CdTe compound and safely encapsulated inside CdTe PV solar modules for years.
Nowadays, CdTe technology is the most popular thin-film solar panel technology and it is the preferred option by the top manufacturers of thin-film solar panels in the world. In this article, we will do a deep dive on CdTe solar panels and everything related to this technology.
