Amorphous, hydrogenated carbon (a-C:H) photovoltaic cell
US5562781A · kind A · utility
21Cited by
4References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1995 |
| Grant date | Oct 8, 1996 |
| Priority date | — |
| Expiry date | Jan 19, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/548
Abstract
A photovoltaic cell comprising a plurality of film layers, at least one of the layers being a semiconductor film of amorphous, hydrogenated carbon. The preferred embodiment comprises a plurality of semiconductor films sandwiched together in layers, every three layers forming a PIN junction. All films are made of amorphous, hydrogenated carbon and vary only by dopant levels within each PIN junction. There are variations in bandgap from one PIN junction to the next in order that the photovoltaic effect in each PIN junction will be caused by a different portion of the spectrum of light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.