根据铁电隧道结结区势垒随铁电自发极化强度的变化而改变以及铁电材料的热释电效应，考察隧道结电子隧穿的温度效应,提出研制一种基于铁电隧道结的新型测辐射热计红外探测器。研究铁电隧道结的隧穿电阻温度系数与隧穿势垒高度、纳米厚度铁电层的热释电系数、电极材料不对称性的关系；制备红外探测单元器件，揭示基于铁电隧道结电子隧穿效应的红外探测微观机理,并建立器件性能与器件恒压或恒流工作模式以及偏置电压或电流的关系，揭示器件噪声起源机理。

The energy barrier in a ferroelectric tunnel junction is directly related to the polarization of the ferroelectric layer. Thus the barrier height varies with temperature as a result of the pyroelectric effect,so does the current of the junctions under voltage bias. Base on the obove effect, a bolometer infrared detector consisting of a ferroelectric tunnel junction is proposed. The barrier height , the pyroelectric coefficient of the ferroelectric layer in nanometer scale, and the asymmetry in the electrodes of the junctions will determine the temperature coefficient of resistance of the junction. The dependence of the temperature coefficient of resistance on these parameters of the junctions will be studied. Detectors with proper thermal isolation structures will be fabricated. Uncover the mechanism of the infrared detection based on the effect of the tunneling of the ferroelectric tunnel junction The performance of the detectors working at different modes and different voltage or current bias will be investigated. The origins of the noises of the detectors and their dependence on fabrication process and stuctures of the device will be studied.