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 requirements in manufacturing. As silicon panels continue to drop in price, CdTe performance improvements are essential for the technology to remain competitive. One potential area of improvement for CdTe panels is lower than expected open circuit voltage, which implies a short minority carrier lifetime; this has a direct negative impact on cell efficiency. If new CdTe panels are developed that can improve this characteristic the adoption of this technology could be spurred.
from Energy Innovation Portal Technology Ticker https://techportal.eere.energy.gov/technology.do/techID=1577
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