共查询到19条相似文献,搜索用时 140 毫秒
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InSb光伏探测器的响应率是评价探测器性能的重要指标之一。探测器的电压信号与响应率成正比。从光敏芯片的角度提出了增大InSb红外探测器信号的方法。通过实验设计,优化了台面湿法刻蚀的方法,减小了芯片p型层的厚度。优化台面刻蚀方法使台面面积增加,InSb芯片的I-V电流增大了40%,组件的电压信号值提升了16%。进一步将InSb芯片的p型层厚度减小至0.8~1.2■m后,InSb芯片的I-V电流增大了67.3%,单元组件的电压信号值提升了40.2%。基于InSb光敏芯片光生载流子的产生到光电流的转换过程,分析了台面湿法刻蚀以及p型层的厚度对信号的影响机理。该研究对于提升InSb探测器信号和优化探测器性能具有重要的指导意义。 相似文献
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长波碲镉汞材料受结构、组分等因素影响。在制备器件过程中,刻蚀电极接触孔易发生材料损伤,影响芯片的成像性能。利用现有电感耦合等离子体(Inductively Coupled Plasma, ICP)设备刻蚀长波碲镉汞芯片电极接触孔,采用分步刻蚀以避免损伤。该方法虽可提高芯片的成像质量,但效率低,难以应用于大规模生产。为了提高刻蚀效率和实现器件大规模制备,通过对ICP刻蚀机上下电极射频功率的协同优化,开发出长波碲镉汞芯片电极接触孔一次成型工艺。经中测验证,探测器(长波320×256,像元中心间距为30 μm)的盲元率仅为0.26%。该工艺能够实现低损伤电极孔刻蚀,可推广到大批量长波红外芯片制备。 相似文献
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64×64元InSb光伏红外探测器列阵性能表征 总被引:2,自引:0,他引:2
用改进的恒压微探针方法,对64×64元 InSb 凝视红外焦平面器件光伏探测器列阵芯片的性能进行了抽样检测和均匀性评价.测得典型64×64元 InSb 芯片的探测器平均零偏阻抗为42MΩ(90K),非均匀性为20%;平均1000K黑体响应率为2.8A/W,非均匀性为6.3%;电学串音率<2%.讨论了性能异常芯片上存在的局部电学串音现象. 相似文献
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像素级数字化红外探测器具有更高的性能水平和更强的抗干扰能力,是红外探测器技术发展的重要方向之一。通过突破像素级数字化读出电路设计、低峰谷碲镉汞材料外延、器件制备工艺以及倒装互连等关键技术,研制出了一种512×8像素级数字化长波红外探测器组件,并对其性能进行了测试。此探测器的响应波段为7.85~10.17 μm,平均峰值响应率为1.4×1011 LSB/W,响应率非均匀性为9.13%,有效像元率为97.5%,噪声等效温差(Noise Equivalent Temperature Difference, NETD)为4.4 mK,动态范围为90.6 dB。测试结果表明,该探测器能够满足系统要求。 相似文献
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Chen K.-L. Liu D.K.Y. Misium G. Gosney W.M. Wang S.-J. Camp J. Tigelaar H. 《Electron Device Letters, IEEE》1992,13(1):53-55
The authors demonstrate an antifuse structure with a cell area of 0.2×0.2 μm2 which is fabricated by using the vertical sidewall of a polysilicon interconnect layer and two-mask patterning and etching steps. The antifuse is constructed in such a way that its vertical dimension is determined by the thickness of the polysilicon layer, and its horizontal dimension is determined by two-mask patterning and etching steps. For a conventional contact-hole type of structure, a 0.2-μm lithographic capability would be required to achieve the same antifuse cell size. It is also demonstrated that the time-dependent dielectric breakdown (TDDB) reliability of this sidewall antifuse is as good as that of a conventional planar contact-hole antifuse 相似文献
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WANG Bing-jian LIU Shang-qian CHENG Yu-bao 《光电子快报》2006,2(3):225-228
Infraredfocal plane array(IRFPA) is a kind of infra-red detector array whichis sensitive toinfraredradiationandintegrated with signal processing circuits .The IRF-PAi maging systemhas advantages of si mple configura-tion,high reliability,high sensitivity … 相似文献
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Lei-jun Xu Jia-ning Guan Xue Bai Qin Li Han-ping Mao 《Journal of Infrared, Millimeter and Terahertz Waves》2017,38(10):1189-1205
To overcome the large chip area occupation for the traditional terahertz multi-frequency detector by using the antenna elements in a different frequency, a novel structure for a multi-frequency detector is proposed and studied. Based on the ring antenna detector, an embedded multi-ring antenna with multi-port is proposed for the multi-frequency detector. A single-ring and dual-ring detectors are analyzed and designed in 0.18 μ m CMOS. For the single-ring detector, the best responsivity and NEP is 701 V/W and 261 pW/Hz0.5 at the frequency of 290 GHz. For the dual-ring detector, the best responsivity is 367 V/W and 297 V/W, NEP is 578 pW/Hz0.5 and 713pW/Hz0.5, at the frequency of 600 GHz and 806 GHz, respectively. This embedded multi-ring detector has a simple structure which can be expanded easily in a compact size. 相似文献
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《Photonics Technology Letters, IEEE》2008,20(23):1941-1943
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A batch-fabricated silicon thermopile infrared detector 总被引:4,自引:0,他引:4
《Electron Devices, IEEE Transactions on》1982,29(1):14-22
A thermopile infrared detector fabricated using silicon integrated-circuit technology is described. The device uses a series-connected array of thermocouples whose hot junctions are supported an a thin silicon membrane formed using anisotropic etching and a diffused boron etch stop. The membrane size and thickness control the speed and responsivity of the structure, which can be designed for a given application. For a 2-mm × 2-mm × 1-µm silicon membrane containing sixty bismuth-antimony couples, the structure produces a responsivity of 6 V/W and a time constant of about 15 ms. The use of polysilicon-gold couples can improve the responsivity to nearly 10 V/W while maintaining the same speed, simplifying the process, and retaining compatibility with on-chip signal processing circuitry. 相似文献
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PbS胶体量子点因其带隙可调、可溶液加工、吸收系数高等优异特性而广泛应用于光电探测器领域。然而基于光电二极管结构的PbS量子点光电探测器通常会使用不同的材料来制备N型层,从而增加了器件设计和工艺的复杂性,不利于这类光电探测器未来在面阵成像芯片中的应用。为简化制备工艺,提出了一种PbS量子点同质P-N结光电探测器,仅通过一种工艺过程实现了器件P型层和N型层的制备。经测试,探测器对不同入射光强度的探测表现出了良好的线性响应;在0.5 V反向偏压作用下,器件在700 nm处的响应度为0.11 A/W,比探测率为3.41×1011 Jones,展现出了其对弱光探测的优异能力。结果表明文中提出的PbS量子点同质PN结光电探测器有助于推动其在面阵成像领域中的发展。 相似文献
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针对某红外探测器工作时冷头结构发生异常、热阻变大以致冷头芯片不到温的现象,开展了相关研究。采用Ansys有限元软件对该红外探测器的冷头结构进行了仿真分析,并结合分析结果对其进行了优化设计。通过仿真分析发现,优化后的冷头结构在保证探测器芯片低温应力与低温变形的情况下,可以显著降低冷头表面及冷头结构件的应力。按照优化后的冷头结构来装配三个新状态的红外探测器组件,并对其进行了1000次的老炼实验。结果表明,实验前后冷头的强度、探测器响应的非均匀性和盲元率等关键指标并未发生变化;优化后冷头结构的可靠性更高,有利于探测器的长期使用;优化方案合理。 相似文献