Thin film solar cell.

摘要

A thin film solar cell formed on a substrate (1, or 11) comprising at least a first and a second electrode (2 and 5, or 11 and 13) at least one of which is capable of passing light, a silicon film (3 or 12) interposed between said first and second electrodes, and at least one junction formed in the silicon film for separating electrons and positive holes spatially when the cell is exposed to light wherein said silicon film comprises a mixed phase of polycrystalline phase and amorphous phase, and includes fibrous crystalline grains of at least about 50% by volume, each of said grains being at most 1 µm in a bottom diameter and at least 50 nm in height and having its boundary terminated with monovalent element.

The solar cell has a high photoelectric conversion efficiency comparable to that of a single-crystalline solar cell, and can be produced at a low cost.