(EnergyAsia, December 7) — Emcore Corp of Somerset, NJ, US, which manufactures GaAs-based solar cells on germanium substrates as well as compound semiconductor components and subsystems, is investing $18 million in a 31% equity stake (26.5% on a fully diluted basis) of WorldWater & Power Corp of Pennington, NJ.   WorldWater was founded in 1984…