NOVELTY - A unitary solar cell has first cell having first layer of silicon:hydrogen and having top surface through which light enters the unitary solar cell; light transparent layer having top surface engaging a bottom surface of silicon:hydrogen layer; and second cell having second layer.    USE - Used for solar cell panel (claimed).    ADVANTAGE - The invention is capable of releasing current-matching-constraint.    DETAILED DESCRIPTION - The unitary solar cell having two cells, comprises first cell having first layer of a silicon:hydrogen (Si:H) from 500-2000 Angstrom thick, and having top surface through which light enters the unitary solar cell and having bottom-surface through which light exits the first layer, and having n-i-p or a p-i-n configuration in a direction from the top-surface to the bottom-surface of the first layer; light transparent layer having top surface engaging the bottom surface of a-Si:H layer and having bottom surface; and second cell having second layer from the group nc-Si:H, CIS (sic), CIGS (sic), or cadmium-tellurium from 800-20000 Angstrom thick, and having top-surface engaging the bottom-surface of the light transparent layer and through which light enters the second cell from the first cell, and bottom-surface, and having the other of the n-i-p or the p-i-n configuration in a direction from the top surface to the bottom surface of the second layer.    INDEPENDENT CLAIMS are also included for the following:    (1) a method of making unitary solar cell having two cells comprising providing light transparent substrate having first and second surfaces; depositing a-Si:H layer of first conductivity type consisting of n-type or p-type on the first surface of substrate; depositing nc-Si:H layer of first conductivity type on the second surface of substrate; depositing intrinsic layer of a-Si:H layer on a-Si:H layer of first conductivity type; depositing intrinsic layer of nc-Si:H layer on nc-Si:H layer of first conductivity type; depositing a-Si:H layer of second conductivity type on intrinsic layer of a-Si:H, to form a first cell having first-conductivity-type layer, an intrinsic layer, and a second-conductivity-type layer; and depositing nc-Si:H layer of second conductivity type on the intrinsic layer of nc-Si:H, to form a second cell having first-conductivity-type layer, an intrinsic layer, and a second-conductivity-type layer; and    (2) a method of making solar cell panel having individual solar cells that are separated by a pattern-of-paths comprising providing light transparent and electrically non-conductive substrate having first and second surfaces; depositing first light transparent and electrically conductive layer on first surface of substrate; depositing second light transparent and electrically conductive layer on second surface of substrate; scribing the first and second transparent and electrically conductive layers to form patterns that correspond to the pattern-of-paths; depositing a-Si:H layer of first conductivity type on the patterned first transparent and electrically conductive layer to form the first-cell configuration; depositing nc-Si:H layer of second conductivity type on the patterned second transparent and electrically conductive layer to form the second-cell configuration; scribing each of the a-Si:H layer and nc-Si:H layer to form patterns corresponding to pattern-of-paths; depositing third light transparent and electrically conductive layer on the patterned a-SI:H layer; depositing fourth light transparent and electrically conductive layer on the patterned nc-SI:H layer; and scribing each of the third and fourth light transparent and electrically conductive layers to form patterns corresponding to the pattern-of-paths to form individual solar cell.    DESCRIPTION OF DRAWING(S) - The figure is a side schematic view of a four-terminal solar cell.    Substrate (32)    Upper surface (33)    Zinc oxide layers (38, 45)    Transparent conducting oxide layer (40)    Reflecting layer (54)