薄膜全耗尽SOI CMOS器件和电路

对全耗尽SOI(FD SOI)CMOS器件和电路进行了研究,硅膜厚度为70nm.器件采用双多晶硅栅结构,即NMOS器件采用P+多晶硅栅,PMOS器件采用N+多晶硅栅,在轻沟道掺杂条件下,得到器件的阈值电压接近0.7V.为了减小源漏电阻以及防止在沟道边缘出现空洞(Voids),采用了注Ge硅化物工艺,源漏方块电阻约为5.2Ω/□.经过工艺流片,获得了性能良好的器件和电路.其中当工作电压为5V时,0.8μm 101级环振单级延迟为45ps.     

SOI CMOS器件研究

利用0.35μm工艺条件实现了性能优良的小尺寸全耗尽的器件硅绝缘体技术(SOI)互补金属氧化物半导体(FD SOI CMOS)器件,器件制作采用双多晶硅栅工艺、低掺杂浓度源/漏(LDD)结构以及突起的源漏区。这种结构的器件防止漏的击穿,减小短沟道效应(SCE)和漏感应势垒降低效应(DIBL);突起的源漏区增加了源漏区的厚度并减小源漏区的串联电阻,增强了器件的电流驱动能力。设计了101级环形振荡器电路,并对该电路进行测试与分析。根据在3V工作电压下环形振荡器电路的振荡波形图,计算出其单级门延迟时间为45ps,远小于体硅CMOS的单级门延迟时间。     

SOI CMOS器件研究

利用0．35μm工艺条件实现了性能优良的小尺寸全耗尽的器件硅绝缘体技术（SOI）互补金属氧化物半导体（FD SOI CMOS）器件,器件制作采用双多晶硅栅工艺、低掺杂浓度源／漏（LDD）结构以及突起的源漏区。这种结构的器件防止漏的击穿,减小短沟道效应（SCE）和漏感应势垒降低效应（DIBL）;突起的源漏区增加了源漏区的厚度并减小源漏区的串联电阻,增强了器件的电流驱动能力。设计了101级环形振荡器电路,并对该电路进行测试与分析。根据在3V工作电压下环形振荡器电路的振荡波形图,计算出其单级门延迟时间为45ps,远小于体硅CMOS的单级门延迟时间。     

采用CoSi2 SALICIDE结构CMOS/SOI器件辐照特性的实验研究

讨论了CoSi2SALICIDE结构对CMOS/SOI器件和电路抗γ射线总剂量辐照特性的影响.通过与多晶硅栅器件对比进行的大量辐照实验表明,CoSi2SALICIDE结构不仅可以降低CMOS/SOI电路的源漏寄生串联电阻和局域互连电阻,而且对SOI器件的抗辐照特性也有明显的改进作用.与多晶硅栅器件相比,采用CoSi2 SALICIDE结构的器件经过辐照以后,器件的阈值电压特性、亚阈值斜率、泄漏电流、环振的门延迟时间等均有明显改善.由此可见,CoSi2SALICIDE技术是抗辐照加固集成电路工艺的理想技术之一.     

采用CoSi_2SALICIDE结构CMOS/SOI器件辐照特性的实验研究

讨论了CoSi2SALICIDE结构对CMOS/SOI器件和电路抗γ射线总剂量辐照特性的影响.通过与多晶硅栅器件对比进行的大量辐照实验表明,CoSi2SALICIDE结构不仅可以降低CMOS/SOI电路的源漏寄生串联电阻和局域互连电阻,而且对SOI器件的抗辐照特性也有明显的改进作用.与多晶硅栅器件相比,采用CoSi2SALICIDE结构的器件经过辐照以后,器件的阈值电压特性、亚阈值斜率、泄漏电流、环振的门延迟时间等均有明显改善.由此可见,CoSi2SALICIDE技术是抗辐照加固集成电路工艺的理想技术之一.     

新型的低高压MOS接口电路

本文介绍一种由八个高压MOS器件组成的低高压MOS接口电路.它采用与目前国际上先进的NMOS大规模集成电路工艺技术完全兼容的N阱硅栅等平面CMOS工艺,而不需要附加任何工艺步骤.本文描述了高压MOS器件的物理模型,介绍了器件结构和工艺设计,并给出了高压MOS器件的漏击穿电压时沟道长度、漂移区长度、离子注入剂量和延伸源场极的关系的实验结果.这种高压MOS器件的漏击穿电压最大可达400V(在零栅偏压时),最大饱和漏电流可达35mA(在栅压为10V时),而导通电阻低到600(?)(在栅压为10V时).     

金属栅薄膜全耗尽器件研究

实验并研究了采用金属栅工艺的全耗尽SOI MOS器件.采用LDD结构,以减小热载流子效应,防止漏击穿;采用突起的源漏区,以增加源漏区的厚度,并减小源漏区的串联电阻,以增强器件的电流驱动能力,降低寄生电阻,减小静态功耗.研究并分析了硅膜厚度对阈值电压和阈值电压漂移的影响,以及对本征栅电容和静态功耗的影响.与采用常规工艺的器件相比,提高了输出驱动电流,改善了器件的亚阈值特性,特别是在沟道掺杂浓度比较低的情况下,能得到非常合适的阈值电压.     

埋部分P+层背栅SOI高压器件新结构

提出了一种埋部分P+层的背栅SOI(Buried Partial P+ layer SOI,BPP+SOI)高压器件新结构.部分P+层的引入不仅有效地增强了源端埋氧层电场,而且还降低了源端PN结表面电场,使器件击穿电压随背栅压的增加而大幅增加,比导通电阻也显著降低.仿真结果表明,在漂移区长度为150μm,背栅压为650V时,BPP+SOI的耐压较常规结构提高了84.9%;在漂移区为120μm,耐压相同的情况下,BPP+SOI的比导通电阻较常规结构降低了31%.     

N+多晶硅栅薄膜全耗尽SOI CMOS器件与电路的研究

选用SIMOX(Separation by Implantation of Oxygen)衬底材料,对全耗尽SOI CMOS工艺进行了研究,开发出了N 多晶硅栅全耗尽SOI CMOS器件及电路工艺,获得了性能良好的器件和电路。nMOS和pMOS的驱动电流都比较大,且泄漏电流很小,在工作电压为3V时,1．2μm101级环振的单级延迟仅为50．5ps。     

LDMOS低功耗自恢复电平移位电路设计

设计了一个新型的薄栅氧、低功耗、自恢复的电平移位栅电压控制电路.在20V工作电压下,n沟道和p沟道LDMOS高压器件的栅源电压Vgs分别保持在±5V.当一个选址周期结束后,电路能自动复位而不需增加任何复位器件和电路.该电路为高低压兼容,采用标准0.5μmCMOS-LDMOS兼容工艺制造,可用于OLED显示的驱动控制.     

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.     

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.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks