CMOS／SIMOX倒相器的抗总剂量辐照特性

对条栅ＣＭＯＳ／ＳＩＭＯＸ倒相器在不同偏置条件下进行了＾６０Ｃｏγ射线的总剂量辐照试验，比较研究了ＰＭＯＳ、ＮＭＯＳ对倒相器功能的影响，发现ＮＭＯＳ抗总剂量副照性能比ＰＭＯＳ差，主要是ＮＭＯＳ引起器件功能的失效。     

CMOS／SIMOX和CMOS／BESOI的γ射线辐照特性比较

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。     

短沟道CMOS／SIMOX器件及电路的辐照特性研究

利用薄膜全耗尽ＣＭＯＳ／ＳＯＩ工艺成功地研制了沟道长度为１．０μｍ的薄膜抗辐照ＳＩＭＯＸＭＯＳＦＥＴ、ＣＭＯＳ／ＳＩＭＯＸ反相器和环振电路，Ｎ和ＰＭＯＳＦＥＴ在辐照剂量分别为３ｘ１０５ｒａｄ（Ｓｉ）和７ｘ１０５ｒａｄ（Ｓｉ）时的阈值电压漂移均小于１Ｖ，１９级ＣＭＯＳ／ＳＩＭＯＸ环振经过５ｘ１０５ｒａｄ（Ｓｉ）剂量的电离辐照后仍能正常工作，其门延迟时间由辐照前的２３７ｐｓ变为３２８ｐｓ。     

CMOS／SOI的高温特性分析

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。     

氮氧化物栅介质抗辐射性能研究

本文利用具有氮氧化物栅介质的ＮＭＯＳ、ＰＭＯＳ和ＣＭＯＳ集成电路研究氮氧化物栅的抗γ总剂量性能，结果表明氮氧化物多层栅介质有比纯ＳｉＯ２更好的抗辐射性能。     

Si-栅MOSFET抗总剂量加固技术

ＭＯＳＦＥＴ总剂量加固强烈依赖于工艺技术,对干氧方式下不同条件制备的ＮＭＯＳ,ＰＭＯＳ管,分析其辐照响应,并借用亚阈值Ｉ－Ｖ技术分离氧化物陷阱电荷和界面陷阱对阈值电压漂移的贡献,得出较佳的干氧抗总剂量加固工艺条件。     

不同辐射剂量率下CMOS器件的电离辐射性能

对加固ＣＭＯＳ器件在两种辐射剂量率下进行辐照实验,研究了ＭＯＳＦＥＴ阈值电压及ＣＭＯＳ倒相器转换电压Ｖｔｒ、开门电压Ｖｉｈ、关门电压Ｖｉｌ等参数随辐射剂量及辐射剂量率的变化关系规律．对实验结果进行了分析讨论     

CMOS／SIMOX器件总剂量辐照的研究

在新材料ＳＩＭＯＸ上制作ＣＭＯＳ器件,并采用静态Ｉ－Ｖ技术,研究了ＣＭＯＳ／ＳＩＭＯＸ在（６０）Ｃｏ－γ电离辐照场中辐照感生界面态、氧化物正电荷、阈值电压、静态漏电流等参数的变化。结果表明,在辐照过程中,氧化物正电荷增加较多,界面态增加较少,且ＮＭＯＳ和ＰＭＯＳ＂导通＂辐照偏置是最恶劣偏置。     

N沟MOSFET／SIMOX的γ射线辐照特性

对用多次注入与退火技术制成的ＳＩＭＯＸ材料制备的Ｎ沟ＭＯＳＦＥＴ进行了＾６０Ｃｏγ射线累积剂量辐照试验，并同通常的体硅ＮＭＯＳ的辐照效应作了比较，分析了引起阈值电压漂移的两个因素：氧化层电荷和界面态电荷，提出了提高ＮＭＯＳ／ＳＩＭＯＸ抗辐照性能的几点措施。     

全耗尽CMOS／SIMOX器件研制

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。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.