M. Setek boasts 700 employees in hard-hit Fukushima Prefecture, where more than 200,000 people are being evacuated due to fears of radiation poisoning and the potential for a hydrogen explosion at the Fukushima Daiichi nuclear-power plant.

Taiwan’s AUO, one of the world’s largest maker of liquid-crystal display screens, bought a 50% stake in M. Setek in 2009 for $125m.

It has since increased its share, following peers in the semiconductor and electronics industry, such as Taiwain Semiconductor Manufacturing, into the PV game.

“The