Thin film solar cells are favorable because of their minimum material usage and rising efficiencies. The three major thin film solar cell technologies include amorphous silicon (α-Si), copper indium gallium selenide (CIGS), and cadmium telluride (CdTe).
1. Introduction Cadmium Telluride (CdTe) thin film solar cells have many advantages, including a low-temperature coefficient (−0.25 %/°C), excellent performance under weak light conditions, high absorption coefficient (10 5 cm⁻ 1), and stability in high-temperature environments.
This is the dominant technology currently used in most solar PV systems. Most thin-film solar cells are classified as second generation, made using thin layers of well-studied materials like amorphous silicon (a-Si), cadmium telluride (CdTe), copper indium gallium selenide (CIGS), or gallium arsenide (GaAs).
Solar cells are one of the potential applications of CdTe thin film. Absorption coefficient of CdTe thin film is 104 cm−1. Other interesting property of the CdTe material is that we can easily deposited p- and n-type conductivity.
Cadmium telluride PV is the only thin film technology with lower costs than conventional solar cells made of crystalline silicon in multi-kilowatt systems.
The past decade has been dominated by First Solar, which holds the world record in thin film efficiencies and has broken the $1/Watt milestone in 2009. Despite this, the proper disposal of cadmium remains an issue with this thin film technology.
OverviewHistoryTheory of operationMaterialsEfficienciesProduction, cost and marketDurability and lifetimeEnvironmental and health impact
Thin-film solar cells are a type of solar cell made by depositing one or more thin layers (thin films or TFs) of photovoltaic material onto a substrate, such as glass, plastic or metal. Thin-film solar cells are typically a few nanometers (nm) to a few microns (μm) thick–much thinner than the wafers used in conventional crystalline silicon (c-Si) based solar cells, which can be up to 200 μm thick. Thi…
OverviewBackgroundHistoryTechnologyMaterialsRecyclingEnvironmental and health impactMarket viability
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 PV is the only thin film technology with lower costs than conventional solar cells made of crystalline silicon in multi-kilowatt systems.