Bifacial elongated solar cell devices

A solar cell assembly comprising a plurality of elongated solar cells, wherein each elongated solar cell in said plurality of elongated solar cells comprises:

• (i) a rigid tube-shaped conductive core, wherein said rigid tube-shaped conductive core is made of plastic or glass;
• (ii) a back-electrode circumferentially disposed on said rigid tube-shaped conductive core;
• (iii) a semiconductor junction circumferentially disposed on said back-electrode;
• and
• (iv) a transparent conductive layer circumferentially disposed on said semiconductor junction,
• wherein elongated solar cells in said plurality of elongated solar cells are arranged in a parallel or a near parallel manner thereby forming a planar array having a first face and a second face,
• wherein the solar cell assembly is configured to receive direct light from a side of said solar cell assembly that includes said first face of said planar array and a side of said solar cell assembly that includes said second face of said planar array.