共查询到20条相似文献,搜索用时 125 毫秒
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本文介绍了适合于薄膜亚微米、深亚微米SOIMOSFET的二维数值模拟软件。该模拟软件同时考虑了两种载流子的产生-复合作用,采用了独特的动态二步法求解泊松方程和电子、空穴的电流连续性方程,提高了计算效率和收敛性。利用此模拟软件较为详细地分析了薄膜SOIMOSFET不同于厚膜SOIMOSFET的工作机理及特性,发现薄膜SOIMOSFET的所有特性几乎都得到了改善。将模拟结果与实验结果进行了对比,两者吻合得较好。 相似文献
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钌系厚膜电阻器阻值受烧结温度影响机理的探讨 总被引:1,自引:0,他引:1
本文介绍了钌系厚膜电阻器阻值受烧结温度影响机理的研究。用AFM、SEM和AES分析了经不同峰值温度烧成的厚膜电阻体、电阻体与陶瓷衬底和电阻体与电极界面的结构和成份。研究表明,不同峰值温度烧成的厚膜电阻器,由于微观结构的不同,其阻值存在着较大的差异。 相似文献
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用薄膜SIMOX(SeparationbyIMplantationofOXygen)、厚膜BESOI(ffendingandEtch-backSiliconOnInsulator)和体硅材料制备了CMOS倒相器电路,并用60Coγ射线进行了总剂量辐照试验。在不同偏置条件下,经不同剂量辐照后,分别测量了PMOS、NMOS的亚阈特性曲线,分析了引起MOSFET阈值电压漂移的两种因素(辐照诱生氧化层电荷和新生界面态电荷)。对NMOS/SIMOX,由于寄生背沟MOS结构的影响,经辐照后背沟漏电很快增大,经300Gy(Si)辐照后器件已失效。而厚膜BESOI器件由于顶层硅膜较厚,基本上没有背沟效应,其辐照特性优于体硅器件。最后讨论了提高薄膜SIMOX器件抗辐照性能的几种措施。 相似文献
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采用SIMOX和BESOI材料制作了CMOS倒相器电路,在25 ̄200℃的不同温度下测量了PMOS和NMOS的亚阈特性曲线,实验结果显示,薄膜全耗尽IMOX器件的阈值电压和泄漏电流随温度的变化小于厚膜BESOI器件。 相似文献
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ECR—PECVD制备Si3N4薄膜的特性及其应用的研究 总被引:3,自引:1,他引:3
本文利用ECR-PECVD技术在不同沉积温度下制备了Si3N4薄膜,利用Si3N4薄膜的透射光学强度曲线计算了Si3N4薄膜的折射率和膜厚,计算结果与实测值符合较好。结果表明,随着帝积温度的提高,Si3N4薄膜的折射率增大,致密性提高,Si3N4薄膜厚度在60mm直径范围内不均匀度小于5%,测定了Si3N4薄膜的显微硬度,利用荧光分光光度计测定了Si3N4薄膜的光致发光效应,初步进行了Si3N4薄 相似文献
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在PECVD法低温制备优质薄膜技术中,改变衬底温度、反应室气压、混合气体组分,运用退火致密工艺,制备SiOxNy栅介质膜样品。采用椭偏仪测量该薄膜的折射率和膜厚,结合俄歇电子能谱(AES)和红外吸收光谱分析,研究薄膜的光学特性和微观组分结构。并探讨多种工艺制备条件对薄膜微观结构的影响 相似文献
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对Pt/Si快速热退火固相反应形成超薄PtSi薄膜进行研究。溅射Pt薄膜的厚度在5~20nm之间,用AES,XRD,RBS,SEM等分析测试手段对固相反应Ptsi薄膜的结构特性进行观测,并对PtSi/n-Si肖特基结电学性能进行了测试。实验结果表明,550~600℃快速返火有利于Pt/Si反应形成性能优良的PtSi/Si肖特基势垒接触。 相似文献
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综述了 Pt Si/p- Si异质薄膜近年来研究的新进展 ,包括 Pt Si/p- Si的制备工艺、相形成与分布、Pt Si/p- Si界面的微结构、价电子结构以及 Pt Si/p- Si肖特基势垒的研究现状 ,并且探讨了 Pt Si/p- Si的发展方向。 相似文献
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Masafumi Kimata Masahiko Denda Shyuhei Iwade Naoki Yutani Natsuro Tsubouchi 《Journal of Infrared, Millimeter and Terahertz Waves》1985,6(10):1031-1041
The photoresponse of a front-illuminated PtSi Schottky-barrier detector is measured in the wavelength range between 0.4 and 5.2μm. In the wavelength range longer than 1.1μm, the detection mechanism is the internal photoemission. On the other hand, the intrinsic mechanism becomes dominant in the wavelength range shorter than 1.1μm. The measured data are in good agreement with values calculated from these two detection mechanisms. The photoresponse depends on the PtSi thickness in both wavelength ranges. For getting a high responsivity, it is important to make a thin uniform metal film. The visible and the thermal image with a PtSi Schottky-barrier wide spectral band imager are also demonstrated. 相似文献
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利用在线应力测试技术表征了掺入Pt后对镍硅化物薄膜应力性质的影响.通过改变NiSi薄膜中Pt含量以及控制热处理的升温、降温速率实时测量了薄膜应力,发现在Si(100)衬底上生长的纯NiSi薄膜和纯PtSi薄膜的室温应力主要是热应力,且分别为775MPa和1.31GPa,而对于Ni1-xPtxSi合金硅化物薄膜,室温应力则随着Pt含量的增加而逐渐增大.应力随温度变化曲线的分析表明,Ni1-xPtxSi合金硅化物薄膜的应力驰豫温度随Pt含量的增加,从440℃(纯NiSi薄膜)升高到620℃(纯PtSi薄膜).应力驰豫温度的变化影响了最终室温时的应力值. 相似文献
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A silicon n++pn homojunction infrared detector, in which a degenerate n++ layer is backed by a metal film forming an ohmic contact, has been proposed and studied. The metal film is a photoelectric conversion region along with the n++ layer. Although, for an n++pn detector without the metal film, very poor rectifying properties are observed when the n++ layer thickness is extremely reduced, the new detector, employing a thin PtSi film as the metal film, shows normal diode I-V characteristics, since the PtSi film provides increased surface conductivity. The new detector has achieved an increase in operatable temperature, or an extension of cutoff wavelength, and operated with cutoff wavelengths of 11.9 μm, 18.7 μm and about 30 μm at 70 K, 50 K, and 30 K, respectively, because the saturation current density for the new detector has been reduced to about one tenth that for the previously reported n++pn detector. The responsivity for the new detector has increased to 1.1-3.8 times as large as that for the previously reported n++pn detector, when both detectors have the same cutoff wavelength 相似文献
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A new 128×128 element PtSi Schottky barrier infrared image sensor with ITCCD readout structure and PtSi thin film optical cavity detector structure has been fabricated,which has 50μm×50 μm pixels,a fill factor of 40 percent,the nonuniformity of 5% or less and the dynamic range of over or equal to 50 dB.The noise equivalent temperature difference is 0.2 K with f/1.0 optics at 300 K background. In this paper,the principle of operation,design consideration and fabrication technology for the device are described. 相似文献