Electromagnetic wave detector, electromagnetic wave detector array, and electromagnetic wave detection method
US10957810B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2017 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Dec 15, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10F77/953
Abstract
An electromagnetic wave detector comprises: p-type and n-type graphenes arranged side by side on an insulating layer; a first electrode and a second electrode opposing each other via the graphenes; a gate electrode for applying an operation voltage to the p-type and n-type graphenes; a balance circuit connected between two second electrodes; and a detection circuit. The p-type graphene has a Dirac point voltage higher than the operation voltage. The n-type graphene has a Dirac point voltage lower than the operation voltage. In a state in which no electromagnetic wave is incident on the graphenes, the balance circuit places the first electrode and the second electrode at the same potential. In a state in which an electromagnetic wave is incident on the p-type and n-type graphenes, the detection circuit detects an electric signal between the second electrodes, and outputs an electric signal in the state in which the electromagnetic wave is incident.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.