Pyroelectric unit infrared detector and production thereof

A pyroelectric infrared and detector technology, which is applied to thermoelectric devices with thermal changes in dielectric constant, electrical radiation detectors, etc. Electric coefficient, the effect of improving sensitivity
CN1746639AInactive Publication Date: 2006-03-15UNIV OF ELECTRONIC SCI & TECH OF CHINA
0 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
UNIV OF ELECTRONIC SCI & TECH OF CHINA
Publication Date
2006-03-15
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

A unit pyroelectric infrared detector consists of top and bottom electrodes, BST ceramic semiconductor and BST ceramic oxide layer media wrapped outside of said semiconductor. It features that BST ceramic semiconductor is prepared by high temperature sintering and reduction heat treating ( Ba 0.7 Sr 0.3 ) TiO3 ceramic base material doped with 1 ¿C 5 wt % rare earth impurities with its thickness less than 0.20mn and resistance rate less than 10ª©.cm, BST ceramic oxide layer media is prepared by oxidizing surface of ceramic semiconductor with its thickness of 5 ¿C 10 micro m. The preparing method is also provided.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of materials and components, and in particular relates to the structure and preparation of pyroelectric infrared detection devices. Background technique

[0002] As we all know, pyroelectric infrared detectors can be widely used in industry, agriculture, environment, military, medical and other fields due to their characteristics of room temperature operation, wide response spectrum, convenient use and low cost. Pyroelectric infrared detectors working in dielectric mode represented by BST ferroelectric materials have attracted much attention because of their high detection figure of merit.

[0003] Since the thickness of the sensitive unit medium used in the pyroelectric infrared detector is very thin, usually below 0.1mm, even if the most advanced ceramic technology is used to make the BST pyroelectric ceramic block, it will be processed after a series of complicated processes such as cutting and grinding. ...

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