Abstract: A solar panel includes a cleaning assembly, the solar panel being mounted for rotation about a horizontal axis along a semi-circular path and the cleaning assembly comprising an oblong brush held across the front face of the solar panel and slidable back and forth along the front face of the solar panel.

Abstract: A method of forming a solar cell 100 having three dimensional junctions 116 created between a conductive substrate 102 having a first conductivity and a conductive layer 120 having an opposite second conductivity comprising the steps of applying the conductive layer 120 on a top surface 104 of the conductive substrate 102, exposing selective portions of the conductive layer 102 to laser radiations 124 having a wavelength ranging up to 10.6 ?m. Due to this laser application, the conductive layer 102 diffuses across a thickness of the conductive substrate 102 in the form of a plurality of channels 126. The plurality of channels 126 being formed in spaced apart relationship with each other. Thereafter, metal contacts are thermosetted on a bottom surface 114 of the conductive substrate 102 for electrically connecting exposed ends 136 of the plurality of channels 126.

Abstract: A solar panel 100 comprising a cleaning assembly 102, the solar panel 100 being mounted for rotation about a horizontal axis along a semi-circular path and the cleaning assembly 102 comprises an oblong brush 120 held across the front face 116 of the solar panel 100 and slidable back and forth along the front face 116 of the solar panel 100 (FIG. 2).