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根据SiO2-Si系统在空气中的反射率公式,讨论了SiO2层厚度和入射光波长对反射率的影响,提出了在两种情况下确定SiO2层厚度的方法:1.实现在某一波长范围抗反射效果最佳;2.实现在某一光照条件下光电流最大。 相似文献
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本文研究了理想Si/SiO2/Si结构的电容-电压(C-V)特性,提出了根据Si/SiO2/Si的C-V特征测量SiO2厚度、衬底掺杂浓度和固定电荷的方法,并对键合样品进行了实验。 相似文献
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为了加深对薄膜电致发光器件的物理性质的理解,本文就相邻介质的粗糙度对器件电气性能的影响了研究。原子力显微镜分析表明:底层的Ta2O5厚度越大,其表面就越粗糙,导致ZnS:Pr,Ce表面的粗糙度增加。更重要的是增加Ta2O5薄膜表面的粗糙度,降低了由Poole-Frenkel电流而产生的初始场强。对ITO-Ta2O5-ZnS:Pr,Ce-A1和ITO-Ta2O5-ZnS:Pr,Ce-Ta2O5-A1 相似文献
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RESURF原理应用于SOI LDMOS晶体管 总被引:5,自引:0,他引:5
本文首次采用解析方法及二维计算机模拟讨论了RESURF原理应用于SOILDMOS晶体管.研究表明:击穿电压随埋层SiO2厚度增加而增加;击穿电压随Si层厚度变化呈现U型曲线;当埋层SiO2和Si层厚度一定时,Si层的杂质浓度存在一个临界值,在此浓度之下,可获得高的击穿电压.这个结论也适用于介质隔离的各种横向器件的击穿特性分析. 相似文献
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在确定的开管扩镓装置中,以氢气做为镓源Ga2O3的反应和输运气体,凭借准确的控制扩散条件,镓在SiO2/Si系统中扩散,可获得良好的扩散均匀性和重复性。根据镓在Si和SiO2中扩散行为,分析讨论了镓在裸Si系和SiO2/Si系扩散所产生的杂质Rs效应,及其氧化膜质量和厚度对Rs的影响。 相似文献
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钝化膜抗γ辐照的研究 总被引:1,自引:1,他引:0
研究了几种不同的钝化膜的γ辐照特性,初步揭示单纯的SiO2膜不具备抗γ辐照的能力,厚度为100nm涂有聚酰亚胺的SiO2膜当辐照剂量小于10^6拉德(Si)时具有良好的抗γ辐照作用。同时指出了四甲基氢氧化胺对Si-SiO2界面也有影响。 相似文献
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本文分析了硅/玻璃静电键合过程中硅表面SiO2钝化膜的作用.SiO2膜的存在使键合过程中的静电力减弱,键合工艺所选择的电压上限受SiO2膜击穿电压的控制,对于商用抛光硅片与玻璃,要完成良好的键合,一般SiO2厚度要小于0.5μm. 相似文献
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在表层硅厚度为180um的SIMOX材料上,用局部增强氧化隔离等工艺研制了沟道长度为2.5μm的全耗尽CMOS/SIMOX器件。该工艺对边缘漏电的抑制及全耗尽结构对背沟漏电的抑制降低了器件的整体漏电水平,使PMCOS和NMOS的漏电分别达到3.O×10-11A/μm和2.2×10-10A/μm。5V时,例相器的平均延迟时间达6ns。 相似文献
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本文描述交流薄膜电致发光(ACTFEL)平板显示器件的基本工作原理,结构,设计规则和驱动方法,叙述ACTFEL显示的荧光体和绝缘体的一些基本总是以及采用的各种工艺;介绍了多色TFEL显示的结构和制作技术,还介绍了它们进展水平以及未来发展趋势. 相似文献
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《Electron Devices, IEEE Transactions on》1984,31(1):105-108
The commonly used dielectrics, Y2 O3 , Al2 O3 , Si3 N4 , and Ta2 O5 , were evaluated for use in ac thin-film electroluminescent displays, along with a composite dielectric SiAlON. Adhesion, stress cracking, charge storage capacity, and display brightness and efficiency were studied for devices with ZnS: Mn layers fabricated under identical conditions. A combination of SiAlON and Ta2 O5 appears to be optimum as a double-layer dielectric system for ACTFEL displays. 相似文献
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II-VI compounds (such as ZnS, CaS and SrS) are useful semiconductors for electrolu-minescent display devices. Recently, much
effort has been paid to the color AC thin film electroluminescent (ACTFEL) display devices. In this paper, we review the several
dif-ferent kinds of constructions and materials of active layer of the color TFEL devices. The optical characteristics and
chromaticity coordinates of three primary color of these color TFEL display devices will also be discussed. 相似文献
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《Electron Devices, IEEE Transactions on》1976,23(4):429-437
A novel method is described for constructing an acsustained gas-discharge display (plasma panel). Electrodes and insulating layers are applied alternatively on a single base substrate to produce a matrix of insulated crossovers. A second clear substrate is used to contain gas on the electrode side of the base substrate where glow discharge occurs. As in conventional two-substrate panels, internal memory is obtained by charge storage on the dielectric. The pulsed write and the sustain mechanisms of single- and twin-substrate display elements are discussed with regard to the effects of cell and field geometries. In the sustain mode, glow-propagation effects are observed, especially in the nonhomogeneous fields of the single-substrate design. Here cathode-type glows which form a narrow band are observed with a high-speed photomultiplier and shown to sweep across the dielectric surfaces. Luminance, intensity distributions, and luminous efficiency data are compared on small 10 × 10-line panels using single-substrate and conventional designs. A three- to four-fold improvement in luminance is achieved with the single-substrate geometry. 相似文献
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LED显示屏驱动技术讨论:动态响应 总被引:2,自引:2,他引:0
LED驱动芯片的动态响应特性经常被忽略,但却是相当重要的一个特性。动态响应影响LED显示屏的影像质量,如灰阶、线性度、EMI、信赖性。虽然这些特性彼此间有取舍关系.但是好的驱动芯片应该能够在这些特性中取得较佳的平衡。本文将探讨动态响应的重要性及LED驱动芯片与电路板设计技术,以协助工程师设计出影像质量良好的显示屏。 相似文献
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Mizukami M. Hirohata N. Iseki T. Ohtawara K. Tada T. Yagyu S. Abe T. Suzuki T. Fujisaki Y. Inoue Y. Tokito S. Kurita T. 《Electron Device Letters, IEEE》2006,27(4):249-251
Active matrix organic-light-emitting-diode (AM OLED) panels, driven by organic thin-film transistors (OTFT), have been successfully fabricated on a flexible plastic substrate. The pixel circuit consists of two bottom-contact pentacene OTFTs working as switching and driving transistors. The panel has 16 /spl times/ 16 pixels, each of which have an OLED using a phosphorescent material with an emission efficiency of 30 cd/A. A tantalum oxide (Ta/sub 2/O/sub 5/) film with a dielectric constant of 24, prepared by the anodization of Tantalum (Ta), was used as the gate insulator of the OTFTs. The passivation layer on the OTFTs was formed by a layer of silicon dioxide (SiO/sub 2/) and two layers of polyvinyl alcohol. Using OTFTs with a Ta/sub 2/O/sub 5/ gate insulator, the authors have realized a flexible active matrix OLED panel driven with a low voltage of -12 V. 相似文献
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a—Si:H TFT有源矩阵制造技术的研究 总被引:2,自引:1,他引:1
对a:Si:H TFT有源矩阵的一些关键制造工艺进行研究。研究了Ta2O5/a-SiNx双绝缘层的制备技术,提出了一种新的双有源层结构a-Si:H TFT来降低背光源对器件特性的影响,研制的a-Si:H TFT有源矩阵实现了彩色视频信号的动态显示。 相似文献