Cadmium telluride solar cells are photovoltaic devices that use a layer of cadmium telluride to absorb and convert sunlight into electricity. Characterised by their thin-film technology, these cells stand out due to their high absorption efficiency for sunlight and low production costs compared to other photovoltaic materials. The band gap of cadmium telluride is ideally suited for capturing the broad spectrum of solar energy, which enhances its conversion efficiency.
These solar cells are typically used in solar panels and are especially prevalent in large-scale photovoltaic power stations. The technology’s streamlined manufacturing process involves depositing a thin layer of cadmium telluride between transparent conducting layers on a glass substrate, which simplifies production and reduces material usage. Despite concerns about the toxicity of cadmium, rigorous recycling protocols and closed-loop manufacturing systems mitigate environmental risks.
The performance of cadmium telluride solar cells is competitive, with efficiencies reaching approximately 22%, making them an attractive option for utility-scale installations where cost-effectiveness and long-term durability are priorities. Their lower temperature coefficient compared to silicon-based cells also ensures better performance in hotter climates, contributing to a broader geographical application range.
