钛酸铋钠基铁电陶瓷的热释电性能研究进展

介绍了高光谱用红外探测器的性能及使用情况，并将其与国外同类型高光谱红外探测器的关键指标(如信噪比、暗电流、读出噪声等)进行了对比测试分析。经过衬底去除工艺，短波探测器的光谱响应达到0.4~2.6 μm，平均量子效率超过75%，动态范围内响应线性度拟合曲线的R²值都大于 0.99，半阱信噪比可达到1600。该探测器的性能超过了国外报道的同类器件，满足我国高光谱应用需求。

Research Progress on Pyroelectric Properties of Sodium Bismuth Titanate-Based Ferroelectric Ceramics

Infrared detection technology has been popularized in many fields. It has received attention from countries all over the world. As one of its core sensitive metamaterials, pyroelectric materials have become a hot spot in dielectric physics and materials research in recent years. As a typical ferroelectric material, sodium bismuth titanate-based ceramics have received extensive attention due to their high depolarization temperature and large pyroelectric coefficient. The research status of sodium bismuth titanate-based pyroelectric ceramics was summarized. The means to enhance pyroelectric effect in different components were summarized, and the properties were compared. It is found that lead-free ceramic materials with high depolarization temperature and high pyroelectric coefficient can be obtained by doping single-component acceptors. Finally, some existing problems are discussed.