Photoelectric conversion element having a surface member or a protection member and building material using the same
US6153823A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Nov 28, 2000 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S136/293
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A photoelectric conversion element comprising a substrate, a plurality of semiconductor junctions made of non-single-crystalline semiconductors formed on the substrate, and a surface material covering the semiconductor junctions is provided. The semiconductor junctions have respective absorption spectra different from each other and respective photo-deterioration rates different from each other. A photo-current generated by the semiconductor junction of the least deterioration rate is larger than that by the semiconductor junction of the greatest deterioration rate when no surface material is present, and when present, the surface material absorbs light in a range corresponding to a part of the absorption spectrum of the semiconductor junction of the least deterioration rate, so that the photo-current generated by the semiconductor junction of the least deterioration rate becomes smaller than that by the semiconductor junction of the greatest deterioration rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.