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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.
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.
When you start to choose a battery for a solar generating system, you will find many technical parameters. The most essential of them are power and capacity, DoD, round trip efficiency, warranty period, and producer. Battery’s capacity shows how much electrical power can be stored in a battery. This value is commonly expressed in kilowatt hours.
Saltwater batteries are an excellent choice for those who prioritize environmental sustainability and safety over high energy density. When selecting a battery for your solar panel system, several factors need to be considered to ensure you choose the best option for your needs. 1. Energy Needs
Lithium-ion batteries are the most popular choice for modern solar panel systems. These batteries are known for their higher energy density, longer lifespan, and greater efficiency compared to lead-acid batteries. They are commonly used in both residential and commercial solar installations.
To store solar power, you'll need a deep-cycle battery, typically lithium-ion or lead-acid. Lithium-ion batteries are more efficient and last longer but are more expensive than lead-acid options. There are several types of solar batteries, including lead-acid, lithium-ion, and saltwater.
In 2017, Solaron became the first Armenian company to begin mass production of photovoltaic solar panels., For this purpose, we have established long-term partnerships with organizations and research centers in the EU and China. Solaron produces solar panels at its own modern production facilities located in Yerevan.
Vertical solar panels, east to west orientation, with bifacial modules near Donaueschingen, Germany. A bifacial solar cell (BSC) is a photovoltaic solar cell that can produce electrical energy from both front and rear side. In contrast, monofacial solar cells produce electrical energy only when photons are incident on their front side.
In contrast, monofacial solar cells produce electrical energy only when photons are incident on their front side. Bifacial solar cells and solar panels (devices that consist of multiple solar cells) can improve the electric energy output and modify the temporal power production profile compared with their monofacial counterparts.
By 2020, the ENF Solar directory of solar companies lists 184 producers of bifacial solar panels, and according to the International Technology Roadmap for Photovoltaics, they held a 20% share of the overall PV market and its forecast is that this share will rise to 70% by 2030.
