Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A terahertz photodetector

A photodetector and terahertz technology, which is applied in the field of terahertz wave detection, can solve the problems of Siblometer's inability to detect frequencies and lack thereof, and achieve the effect of realizing terahertz broadband detection.

Active Publication Date: 2016-05-25
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
View PDF2 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These detectors have their own weaknesses. For example, quantum well detectors can only work in <40K environments, and Siblometers cannot detect specific frequencies.
Therefore, there is a lack of a detector that can work at room temperature and dynamically adjust the peak position of the detection frequency in the terahertz band.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A terahertz photodetector
  • A terahertz photodetector
  • A terahertz photodetector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0029] Please refer to attached picture. It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be change...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a terahertz photoelectric detector. The terahertz photoelectric detector at least comprises a substrate with the surface covered with a medium layer, single-layer graphene formed on the surface of the medium layer, first metal electrodes arranged at the two ends of the single-layer graphene and a second metal electrode formed on the back face of the substrate. A current source for measuring the voltage change is arranged between the first metal electrodes, and a voltage source for providing the bias voltage is arranged between the second metal electrode and the first metal electrode at one end of the single-layer graphene. The photoconductive characteristic peak position of the single-layer graphene is modulated by adjusting the bias voltage, and therefore the terahertz frequency is detected.

Description

technical field [0001] The invention relates to the technical field of terahertz wave detection, in particular to a terahertz photodetector, in particular to a photodetector for detecting terahertz waves by utilizing the photoconductive properties of graphene. Background technique [0002] The terahertz band is an undeveloped band between the mid-infrared and microwaves in the spectrum, and is called the "terahertz gap". It has great scientific significance and application prospects in physics, material science, life science, astronomy, information and national defense technology. Due to the important academic significance and application value of the terahertz band, in recent years, terahertz physics, devices and applications have become one of the most popular frontier research fields in the world. [0003] Graphene is a new type of two-dimensional material due to its unique properties, including thinnest, strongest, high thermal conductivity, high hardness, high electron...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/08
CPCH01L31/08
Inventor 王丰曹俊诚
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com