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基于新型的时域有限差分光子学分析方法联合有限元电学分析方法研究了Pt/CdS紫外与InSb红外双色焦平面阵列探测器的双色探测机理.研究发现超薄Pt金属膜与CdS形成肖特基结可以获得较大的紫外光响应并能更好耦合红外光.采用像元间距为50μm的Pt/CdS与InSb键合结构,可以很好地抑制像元间的串音.结果证明了紫外-红外双色探测的可行性,该方法将为紫外—红外双色探测器的设计提供基础指导.
Based on the novel finite-difference time-domain photon analysis method combined with the finite element analysis method, the two-color detection mechanism of Pt / CdS UV and InSb infrared two-color focal plane array detector was studied. It was found that ultra-thin Pt metal film and CdS form Schottky Junction can obtain a larger UV response and better coupling infrared light.With Pt / CdS and InSb bonding structure with a pixel spacing of 50μm, crosstalk between the cells can be well suppressed.The results show that the UV - The feasibility of infrared two-color detection, the method will provide the basic guidance for the design of UV-IR two-color detector.