Photovoltaic device provided with an opaque substrate having a specific irregular surface structure
US6072117A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Feb 26, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
Abstract
A photovoltaic device comprising an opaque substrate having an irregular surface structure comprising a plurality of linear irregularities or recesses arranged therein and a photoelectric conversion layer formed on said irregular surface structure of said substrate, wherein said plurality of linear irregularities or recesses have a center line average roughness Ra(X) of 15 nm to 300 nm when scanned in a direction parallel to the linear irregularities or recesses, a center line average roughness Ra(Y) of 20 nm to 600 nm when scanned in a direction perpendicular to the linear irregularities or recesses, and a Ra(X)/Ra(Y) ratio of 0.8 or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.