Double heterojunction solar cells
US4191593A · kind A · utility
67Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Sep 26, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/52
Abstract
Photovoltaic cell comprising two heterojunctions between three component semiconductors Ga.sub.1-x AL.sub.x As with x varying from 0 to 0.9, GaAs, and Ge which have respective bandgaps of 0.66, 1.43 and 2.4 eV, lattice constants matching at 0.07% and expansion coefficients matching at 1.7%. The cell is mounted in a cell device comprising a parallelepipedal unit, a Fresnel lens, a tapering cavity within said unit, partially filled up with a lens shaped antireflecting transparent material and a radiator, said device forming a sunlight concentrator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.