Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8146235 | Infrared Physics & Technology | 2016 | 14 Pages |
Abstract
A sensitive chip with ultralow dielectric loss based on Mn doped PMNT (71/29) has been proposed for high-end pyroelectric devices. The dielectric loss at 1 kHz is 0.005%, one order lower than the minimum value reported so far. The detective figure of merit (Fd) is up to 92.6 Ã 10â5 Paâ1/2 at 1 kHz and 53.5 Ã 10â5 Paâ1/2 at 10 Hz, respectively. In addition, an inverted pyramid suspending architecture for supporting the sensitive chip has been designed and manufactured by 3D printing technology. The combination of this sensitive chip and the proposed suspending architecture largely enhances the performance of the pyroelectric detectors. The responsivity and specific detectivity are 669,811 V/W and 3.32 Ã 109 cm Hz1/2/W at 10 Hz, respectively, 1.9 times and 1.5 times higher than those of the highest values in literature. Furthermore, the microphonic effect can be largely inhibited according to the theoretical and experimental analysis. This architecture will have promising applications in high-end and stable pyroelectric infrared detectors.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Atomic and Molecular Physics, and Optics
Authors
Qing Xu, Xiangyong Zhao, Xiaobing Li, Hao Deng, Hong Yan, Linrong Yang, Wenning Di, Haosu Luo, Norbert Neumann,