Pb(Zr<sub>0.52</sub>Ti<sub>0.48</sub>)O<sub>3</sub> Ferroelectric Ceramic X-Ray Detectors with High-Temperature Self-Driven Sensitivity and Low Detection Limit.
basic_science · Level V
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- Record sourced from PubMed, PMID 41431313.
- Also identified by DOI 10.1002/adma.202517846.
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Abstract
Advancing X-ray detection technology hinges on creating next-generation direct-detection semiconductors that unite high sensitivity, exceptional stability, and self-powered functionality. Here, Pb(Zr<sub>0.52</sub>Ti<sub>0.48</sub>)O<sub>3</sub> (PZT) ceramic is developed as a novel self-powered X-ray detection material due to its huge internal electrostatic field. Under 70 keV X-ray radiation, the PZT ceramic detector shows a high sensitivity of 1196.82 µC Gy<sub>air</sub> <sup>-1</sup> cm<sup>-2</sup> at room temperature, which is about 60 times larger than commercial α-Se. Meanwhile, the minimum detectable limit reaches 7.31 nGy<sub>air</sub> s<sup>-1</sup> under 40 keV X-ray. Interestingly, the self-powered PZT ceramic detection properties can be regulated by temperature. At 125°C, the PZT detector exhibits a record self-powered sensitivity of 544.69 µC Gy<sub>air</sub> <sup>-1</sup> cm<sup>-2</sup> and an ultralow detection limit of 10.71 nGy<sub>air</sub> s<sup>-1</sup> under 70 keV X-ray radiation. Moreover, the imaging capability of the self-powered PZT ceramic detector is successfully demonstrated at 125°C. This first demonstration of heavy-metal-containing ferroelectric ceramics as excellent self-powered X-ray detection materials marks a breakthrough, revealing their potential for future high-temperature applications and significantly advancing the use of ferroelectrics in this field.