NOVELTY - A solar cell assembly (400) comprises many elongated solar cells (402), each with a rigid tube-shaped conductive core (404) made of plastic/glass; a back-electrode circumferentially disposed on the conductive core; a semiconductor junction (410) circumferentially disposed on the back-electrode; and a transparent conductive layer circumferentially disposed on the junction. The solar cells are arranged in parallel/near parallel manner to form planar array having two faces. The solar cell assembly is configured to receive direct light from its sides that include the two faces of array.    USE - For converting solar energy into electrical energy.    ADVANTAGE - There is no front side contact that shades solar cells. The elongated cells are electrically connected in series rather than in parallel, so that the voltage of each elongated cell is summed. This increases the voltage across the system, thus keeping the current down, relative to comparable parallel architectures, and minimizing resistive losses. The resistance loss across the system is low. The path length through the absorber layer of the semiconductor junction is, on average, longer than the path length through of the same type of absorber layer having the same width but in a planar configuration. Thus, the elongated architecture allows for the design of thinner absorption layers relative to analogous planar solar cell counterparts. As the absorption layer is thinner relative to comparable planar solar cells, there is less resistance and, hence, an overall increase in efficiency in the cell relative to analogous planar solar cells. The thinner absorption layer allow to absorb sufficient amount of light using less material and at low cost; are faster to make at low production costs. The elongated solar cells have a relatively small surface area, relative to comparable planar solar cells, and possess radial symmetry. These properties allow for the controlled deposition of doped semiconductor layers necessary to form semiconductor junction.    DESCRIPTION OF DRAWING(S) - The figure shows a cross-sectional view of the elongated solar cells arranged in series and geometrically arranged in parallel/near parallel on counter electrodes that contact a substrate to form a bifacial assembly.    solar cell assembly (400)    solar cells (402)    conductive core (404)    substrate (406)    semiconductor junction. (410)