Substrate-free thin-film flexible photovoltaic device and fabrication method
US9799792B2 · kind B2 · utility
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Key dates
| Filing date | Jan 14, 2015 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Jan 14, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
Abstract
A method for thermal exfoliation includes providing a target layer on a substrate to form a structure. A stressor layer is deposited on the target layer. The structure is placed in a temperature controlled environment to induce differential thermal expansion between the target layer and the substrate. The target layer is exfoliated from the substrate when a critical temperature is achieved such that the target layer is separated from the substrate to produce a standalone, thin film device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.