Photovoltaic device
US5738731A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 31, 1994 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Aug 31, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A solar cell comprising: PA1 a first junction part having a first conductivity type first semiconductor film and a second conductivity type second semiconductor film formed on an upper surface of said first semiconductor film; and PA1 a second junction part having a first conductivity type third semiconductor film formed on an upper surface of said second semiconductor film and a second conductivity type fourth semiconductor formed on an upper surface of said third semiconductor film, PA1 said junction parts arranged from that having a larger forbidden band width along the direction of progress of light through said semiconductor layers, PA1 said first, second, third, and fourth semiconductor films being formed of single-crystalline filming; PA1 wherein an interlayer conductor prepared from a metal forming ohmic junctions with each of said junction parts and having a thickness capable of transmitting light therethrough is interposed between said first and second junction parts; and PA1 wherein said second semiconductor film arranged on one side of said interlayer conductor is different in crystal orientation from said third semiconductor film arranged on the other side of said inte…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.