Dr. Dieter Bonnet created the world’s first functional cadmium telluride (CdTe) solar cell in 1969. The technology would remain at the cutting edge of solar photovoltaics nearly a half century later. This cost-efficient thin-film technology is still advancing by leaps and bounds. In cooperation with the Technical University of Darmstadt, CTF Solar recently achieved CdTe cell efficiency of 15.2%. With the new dedicated research facility in Dresden now operational, the stage is set for CTF Solar to continue its string of innovations.