Although most solar panels installed presently are composed of silicon, thin film Cadmium Telluride (CdTe) panels offer a number of advantages including lower degradation rate and better performance at high temperature, as well as lower overall material and energy usage during manufacturing. As silicon panels continue to drop in price, CdTe performance improvements are essential for the technology to remain competitive. The reliability of CdTe thin films continues to be a concern within the solar power industry, and researchers continue to search for ways to improve this limiting factor associated with use of CdTe thin films in solar cells.
from Energy Innovation Portal Technology Ticker https://techportal.eere.energy.gov/technology.do/techID=1578
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