Photovoltaic devices with three dimensional surface features and methods of making the same

A photovoltaic cell or device comprising at least one light transmissive layer with a three dimensional surface pattern, wherein:

• the light transmissive layer comprises a front surface and a rear surface disposed opposite to the front surface,
• both the front surface and the rear surface have a three dimensional surface pattern or patterns, wherein the three dimensional surface pattern or patterns of the front surface and the rear surface include a plurality of surface features each having at least one of a different size or a different shape,
• the light transmissive layer is disposed over a photovoltaically-active layer of the photovoltaic cell or device such that the three dimensional surface pattern or patterns on the front surface and the rear surface are both disposed over a single, continuous layer of the photovoltaically-active layer;
• wherein the light transmissive layer is approximately symmetrical across a plane that passes between the three dimensional surface pattern or patterns of the front surface and the three dimensional surface pattern or patterns of the rear surface;
• and
• the three dimensional surface pattern or patterns are configured to cause at least some light that enters the light transmissive layer to reflect multiple times between the front surface and the rear surface within the light transmissive layer.