Solar absorber

A solar absorber equipped with an absorber body (10),

• wherein said absorber body (10) has a side oriented toward a concentrator (13) that concentrates and focuses incident solar energy (12) on the absorber body (10) and an opposite side (38) oriented away from the concentrator (13);
• wherein a selective absorption layer (17) is provided on said side (36) of the absorber body oriented toward the concentrator (13) and another selective absorption layer (18) is provided on said opposite side (38) of the absorber body oriented away from the concentrator (13);
• wherein said selective absorption layer (17) on said side (36) oriented toward the concentrator (13) has a threshold wavelength below which solar radiation is absorbed and above which a reradiation capacity of the absorber body is suppressed by the selective absorption layer (17);
• wherein said another selective absorption layer (18) on said opposite side (38) facing away from the concentrator (13) has another threshold wavelength below which said solar radiation is absorbed and above which said reradiation capacity of the absorber body is suppressed by said another selective absorption layer (18);
• and
• wherein said threshold wavelength of said selective absorption layer (17) is greater than said another threshold wavelength of said another selective absorption layer (18).