Skip to main content

High Pyroelectric Properties of Porous Ba0.67Sr0.33TiO3 for Uncooled Infrared Detectors

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Porous Ba0.67Sr0.33TiO3 (BST) ceramics were fabricated by the solid-state reaction process, and their micro-structural, dielectric, and pyroelectric properties were systemically investigated. Compared with dense specimens, porous BST exhibited a higher pyroelectric coefficient (p), a lower dielectric constant (), and heat capacity (CV), which are beneficial for the development of pyroelectric devices. At room temperature, as the porosity increased from 1.0% to 9.6%, BST ceramics' pyroelectric coefficient increased from 5000 to 8000 c·(m2·°C)–1, the dielectric constant decreased from 12 000 to 8000, while the dielectric losses were <1.0% and the figure-of-merit increased from 11.0 × 10−5 to 27.0 × 10−5Pa−0.5. Improvement of pyroelectric property is benecial for the development of infrared detectors.

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1551-2916.2009.03355.x

Affiliations: Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China

Publication date: December 1, 2009

bsc/jace/2009/00000092/00000012/art00056
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more