NOVELTY - The nanocrystalline superlattice silicon solar cell (100) comprises a substrate (102), an n+ layer (104) deposited on the substrate, a superlattice (106) deposited on the n+ layer, a p+ layer deposited on the superlattice, and a transparent conductor deposited on the p+ layer. The superlattice includes thirty total layers of alternating amorphous layers (108) and nanocrystalline layers (110), and has a thickness of 2 nm to 10 mm. The amorphous layers of the superlattice include germanium, and homogeneous a-(silicon, germanium):hydrogen layers that contain germanium (15-20%).    USE - Used as a nanocrystalline superlattice silicon solar cell.    ADVANTAGE - The nanocrystalline superlattice silicon solar cell can be efficiently, easily, rapidly and economically manufactured with excellent power conversion efficiency, improved performance and reduced power consumption.    DETAILED DESCRIPTION - The nanocrystalline superlattice silicon solar cell (100) comprises a substrate (102), an n+ layer (104) deposited on the substrate, a superlattice (106) deposited on the n+ layer, a p+ layer deposited on the superlattice, and a transparent conductor deposited on the p+ layer. The superlattice includes thirty total layers of alternating amorphous layers (108) and nanocrystalline layers (110), and has a thickness of 2 nm to 10 mm. The amorphous layers of the superlattice: include germanium, homogeneous a-(silicon, germanium):hydrogen layers that contains germanium (15-20%), graded a-(silicon, germanium):hydrogen layers that comprise sublayers, and (silicon, germanium):hydrogen; and have a thickness of 1-30 nm. A content of germanium in the graded a-(silicon, germanium):hydrogen layer varies from a first percentage (0%) at a starting of the graded a-(silicon, germanium):hydrogen layer, and increases to a second percentage (100%) at an ending of the graded a-(silicon, germanium):hydrogen layer. The graded a-(silicon, germanium):hydrogen layers have a continuously, discontinuously and stepwise increasing germanium content. Each of the sublayers has an increased germanium content from a previous sublayer. A first sublayer has a zero germanium content. The nanocrystalline layers: comprise germanium, nanocrystalline silicon:hydrogen layers, nanocrystalline (silicon, germanium):hydrogen layers, nanocrystalline germanium:hydrogen layers, and nanocrystalline (silicon, carbon):hydrogen layers; and have a thickness of 1-100 nm. One of the nanocrystalline (silicon, germanium):hydrogen layers comprise a graded nanocrystalline (silicon, germanium):hydrogen layers. A content of germanium in the graded nanocrystalline (silicon, germanium):hydrogen layer varies from a first percentage at a starting of the graded nanocrystalline (silicon, germanium):hydrogen layer, and increases to a second percentage at an ending of the graded nanocrystalline (silicon, germanium):hydrogen layer. An INDEPENDENT CLAIM is included for a superlattice for use in a solar cell as a middle i layer in a p+-i-n+ cell structure.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a nanocrystalline superlattice solar cell.    Nanocrystalline superlattice solar cell (100)    Substrate (102)    N+ layer (104)    Superlattice (106)    Amorphous layers (108)    Nanocrystalline layers (110)    Transparent conductor. (114)