Affiliation:
1. Key Laboratory of Optoelectronic Material and Device Department of Physics Shanghai Normal University Shanghai China
2. Key Laboratory of Inorganic Functional Material and Device Shanghai Institute of Ceramics, Chinese Academy of Sciences Shanghai China
3. School of Mechanical Engineering and Automation Harbin Institute of Technology (Shenzhen) Shenzhen China
Abstract
AbstractIn this paper, we theoretically and experimentally reported a lead‐free pyroelectric infrared (PIR) detector using (Bi1/2Na1/2TiO3)‐BaTiO3(BNT‐BT) ferroelectric ceramics as the sensitive material. The variation of noise density, voltage response rate (RV), and specific detection rate (D*) with the modulation frequency under the current mode amplification circuit was investigated, and it was found that the lead‐free PIR detector showed high RV in the low frequency band. The RV and D* reached 1.51 × 105 V/W and 2.02 × 108 cmHz1/2W−1 at 10 Hz, respectively. The results were much superior to the PIR based on traditional commercial pyroelectric ceramics, indicating that BNT‐BT lead‐free ceramics have great potential in application to PIR detectors.
Funder
National Natural Science Foundation of China
Subject
Materials Chemistry,Ceramics and Composites
Cited by
2 articles.
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