NOVELTY - The cell (1) has a first conductivity type semiconductor layer (11) whose overlapping portion is placed above a portion of a second conductivity type layer (26), while separated by a patterned dielectric layer (21). A portion of the second conductivity type layer under the overlapping portion of the first conductivity type layer is in direct contact with a semiconductor surface of a substrate. The first conductivity type layer in a first area portion (A) borders on the second conductivity type layer in a second area portion (B), and is placed adjacent to the overlapping portions of the layers.    USE - Solar cell.    ADVANTAGE - The cell maximizes collecting areas for photo-generated charge carriers without gaps in-between first and second junction structures due to immediate bordering. The cell allows the first and second conductivity type semiconductor layers on the semiconductor substrate and excludes the dielectric layer on the substrate in between first and second junction areas, so that better passivation can be achieved to reduce recombination effects and improve efficiency of the cell. The cell has the dielectric layer to be locally removed by a wet-chemical etching step, while protecting an area and some adjacent regions on the area by a dielectric etch mask, thus improving long-term stability and improving electrical isolation in a final solar cell. The dielectric layer covers an area of layer adjacent to an overlapping area of the first and second semiconductor layers so as to enhance durability of performance of the cell.    DETAILED DESCRIPTION - The dielectric layer acts as a separating layer. The first conductivity type semiconductor layer is a p-type semiconductor layer. The first conductivity type semiconductor layer comprises p-type doped amorphous hydrogenated silicon. The cell has a dielectric layer with hydrogenated silicon nitride. The substrate is a semiconductor substrate i.e. silicon wafer. An INDEPENDENT CLAIM is also included for a method for manufacturing a solar cell from a semiconductor substrate.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a solar cell after a manufacturing step.    Area portions (A-D)    Solar cell (1)    Conductivity types semiconductor layer (11, 26)    Patterned dielectric layer (21)