CAJ | 학술논문

负载电阻分流方式通常用于消除光导PbS探测器的背景电流，其中各探测单元光敏元电阻与相对应负载的阻值可以相等，也可以成一固定比例。为研究不同负载电阻均可应用于光导PbS焦平面探测器，采用尺寸同为100μm ×100μm的光敏元、分别为100μm ×100μm和200μm ×50μm的负载研制了线列1×128光导PbS红外焦平面探测器。利用红外焦平面测试系统对不同负载电阻制备的器件性能进行了测试与分析。研究表明，采用不同负载电阻均获得了性能正常的器件；在相同的光敏元工作参数下，器件的平均黑体响应率、平均黑体探测率基本一致，负载对其均无影响。研究结果验证了仅通过调节负载电阻即可使器件背景输出电平平坦化的可行性。
부재전조분류방식통상용우소제광도PbS탐측기적배경전류，기중각탐측단원광민원전조여상대응부재적조치가이상등，야가이성일고정비례。위연구불동부재전조균가응용우광도PbS초평면탐측기，채용척촌동위100μm ×100μm적광민원、분별위100μm ×100μm화200μm ×50μm적부재연제료선렬1×128광도PbS홍외초평면탐측기。이용홍외초평면측시계통대불동부재전조제비적기건성능진행료측시여분석。연구표명，채용불동부재전조균획득료성능정상적기건；재상동적광민원공작삼수하，기건적평균흑체향응솔、평균흑체탐측솔기본일치，부재대기균무영향。연구결과험증료부통과조절부재전조즉가사기건배경수출전평평탄화적가행성。
Resistance selection of blind element used in linear photoconductive (PC) PbS detector for counteracting background current was analyzed. It was found that the blind element resistance can be chosen to be same as, or to be a fixed ratio to that of relevant sensitive element. And the ratio should be equal with ratio of biases applied to blind element and relevant detector. Two linear PC 1 ×128 PbS infrared focal plane array (IRFPA) detectors, with sensitive element size of 100μm ×100μm, and blind element size of 100μm ×100μm and 200μm ×50μm, were fabricated and their performance were tested by IRFPA test system. Results show that when the working condition satisfied average responsivity and average detectivety are same for using different blind elements. Results validate the feasibility that background output uniformity improvement of IRFPAs by tuning the resistance of blind element.