NOVELTY - A solar cell comprises a transparent anti-reflection layer (10) ( greater than or equal to 70 nm, preferably 70 nm to 1 inch thick); an electrically-conductive transparent layer (20) ( greater than or equal to 1000 nm thick) below the transparent antireflection layer; a cadmium sulfide layer (12) (26.75-107, preferably 53.5 nm thick) below the electrically-conductive transparent layer; a cadmium telluride layer (14) (70-280, preferably 140 nm thick) below the cadmium sulfide layer; and an electrically-conductive reflective layer (22) (\100 nm) below the cadmium telluride layer.    USE - Solar cell, i.e. photon trapping solar cell.    ADVANTAGE - The solar cell has a bottom metallic plate that also serves as electron conductor that allows photoelectric current to exit the device and perform useful work. It has a maximum efficiency of 40%. The solar cell can be produced at a low cost with high efficiency and requires small amounts of critical raw materials.    DETAILED DESCRIPTION - A solar cell comprises a transparent anti-reflection layer (10) ( greater than or equal to 70 nm, preferably 70 nm to 1 inch thick); an electrically-conductive transparent layer (20) ( greater than or equal to 1000 nm thick) below the transparent antireflection layer; a cadmium sulfide layer (12) (26.75-107, preferably 53.5 nm thick) below the electrically-conductive transparent layer; a cadmium telluride layer (14) (70-280, preferably 140 nm thick) below the cadmium sulfide layer; and an electrically-conductive reflective layer (22) (\100 nm) below the cadmium telluride layer. The transparent anti-reflection layer includes a glass layer. The electrically conductive transparent layer includes a transparent metal oxide layer and an electrically-conductive open metallic grid. The cadmium sulfide layer and the cadmium telluride layer have a combined thickness of 96.75-387, preferably 193.5 nm. The electrically conductive reflective layer includes a metal layer comprising an aluminum layer. INDEPENDENT CLAIMS are included for:    (1) a method for manufacturing a solar cell; and    (2) a method of converting light radiation into electrical power.    DESCRIPTION OF DRAWING(S) - The drawing is a cross-sectional view of a photon trapping cadmium telluride solar cell.    Transparent anti-reflection layer (10)    Cadmium sulfide layer (12)    Cadmium telluride layer (14)    Electrically-conductive transparent layer (20)    Electrically-conductive reflective layer (22)