Fathollahi - Confer fer Renewable Energy Research and Application (CRERA), AEOI, Tehran, Iran
Reza Nejati - bEnergy Systems Engineering group, Dept. of Mechanical Engineering, K.N.Toosi University of Technology,Tehran,Iran

One of the largest solar thermal generation power plants constructed to date is the one installed in California. In this power station, nine plants with a total net electricity capacity of 354 MW are under operation to feed electricity into the grid of the regional utility. They account for over 90% of the world's solar power production. The HCEs (Heat Collection Elements) of this huge power plant employs Mo-A1203 solar selective absorbers. 1 A schematic diagram of a HCE has been shown in figure 1.

Solar absorber, Selective coatings, Cermet, Solar material, Sputtering