注FCC4007电路的电子和X射线辐照效应

分析研究了用注Ｆ工艺制作的ＣＣ４００７ 电路电子和Ｘ射线辐照响应结果。实验表明,把适量的Ｆ注入栅场介质,能明显抑制辐射所引起的ＰＭＯＳＦＥＴ 阈电压的负向漂移和ＮＭＯＳＦＥＴ阈电压的正向回漂及静态漏电流的增加。Ｉ－Ｖ特性表明,栅介质中的Ｆ能减小辐射感生氧化物电荷和界面态的增长积累。注Ｆ栅介质电子和Ｘ射线辐照敏感性的降低,是Ｓｉ－Ｆ结键释放了Ｓｉ／ＳｉＯ２ 界面应力,并部分替换在辐照场中易成为电荷陷阱的Ｓｉ－Ｈ弱键的缘故。     

掺HCI栅氧化对MOS结构电特性的影响

研究了栅氧化时掺ＨＣｌ的硅栅ＭＯＳＦＥＴ的ＤＤＳ－ＶＧＳ特性，阈电压和界面态。结果发现，ＨＣｌ掺入栅介质，可使ＩＤＳ－ＶＧＳ曲线正向漂移，ＰＭＯＳＦＥＴ阈电压绝对值减小，ＮＭＯＳＦＥＴ阈电压增大，Ｓｉ／ＳｉＯ２界面态密度下降，采用氯的负电中心和Ｓｉ／ＳｉＯ２界面硅悬挂键的键合模型对实验结果进行了解释。     

掺HCl栅氧化对MOS结构电特性的影响

研究了栅氧化时掺ＨＣｌ的硅栅ＭＯＳＦＥＴ的ＤＤＳ－ＶＧＳ特性、阈电压和界面态．结果发现，ＨＣｌ掺入栅介质，可使ＩＤＳ－ＶＧＳ曲线正向漂移，ＰＭＯＳＦＥＴ阈电压绝对值减小，ＮＭＯＳＦＥＴ阈电压增大，Ｓｉ／ＳｉＯ２界面态密度下降。采用氯的负电中心和Ｓｉ／ＳｉＯ２界面硅悬挂键的键合模型对实验结果进行了解释。     

注F CC4007电路的电离辐射效应

本文分析研究了用注Ｆ工艺制作的ＣＣ４００７电路Ｃｏ６０γ辐照响应结果．实验表明、把适量的Ｆ引入栅介质，能明显减少辐射感生氧化物电荷积累和界面态的增长，从而引起较小的阈电压漂移和Ｎ沟静态漏电流的增长．器件导电类型和辐照栅偏压不改变注Ｆ栅介质的抗辐照特性．注Ｆ栅介质辐照敏感性的降低可归结为Ｆ能减小Ｓｉ／ＳｉＯ２界面应力、并部分替换在辐照场中易成为电荷陷阱的应力键和弱健等的缘故．     

多晶硅栅光刻前后注F对MOS器件辐射特性的影响

分析研究了Ｈ２＋Ｏ２合成栅氧化、多晶硅栅光刻前后注Ｆ和Ｐ的沟和Ｎ沟ＮＯＳＦＥＴ，在最劣γ辐照偏置下的阈电压和Ｉｄｓ－Ｖｇｓ亚阈特性的辐射影响应。结果表明，多晶硅栅光刻前注Ｆ比光刻后注Ｆ和未注Ｆ，具有更强的抑制辐射感生氧化物电荷积累和界面态生长的能力。其辐射敏感性的降低可能归结为ＳｉＯ２栅介质和Ｓｉ／ＳｉＯ２界面附近Ｆ的浓度相对较大以及栅场介质中Ｆ注入缺陷相对较少所致。     

多晶硅栅光刻前后注F对MOS器件辐照特性的影响

分析研究了Ｈ２＋Ｏ２合成栅氧化、多晶硅栅光刻前后注Ｆ和Ｐ的沟和Ｎ沟ＮＯＳＦＥＴ，在最劣γ辐照偏置下的阈电压和Ｉ（ｄｓ）－Ｖ（ｇｓ）亚阈特性的辐射影响应．结果表明，多晶硅栅光刻前注Ｆ比光刻后注Ｆ和未注Ｆ，具有更强的抑制辐射感生氧化物电荷积累和界面态生长的能力．其辐射敏感性的降低可能归结为ＳｉＯ２栅介质和Ｓｉ／ＳｉＯ２界面附近Ｆ的浓度相对较大以及栅场介质中Ｆ注入缺陷相对较少所致．     

Fowler－Nordheim高电场应力引起的MOS结构损伤研究

本文研究了Ｆｏｗｌｅｒ－Ｎｏｒｄｈｅｉｍ高电场应力引起的ＭＯＳ结构损伤及其室温退火．结果表明有四种损伤产生：氧化物正电荷建立、Ｓｉ／ＳｉＯ２快界面态增长、慢界面态产生和栅介质电容下降．当终止应力后，前三种损伤在室温下有所恢复，但最后一种损伤没有变化．实验还表明：产生的慢界面态分布在禁带上半部；高电场下栅介质电容呈现无规阶梯型下降．对四种损伤及其室温退火机理进行了讨论．还给出产生的慢界面态对高频电容－电压测量的影响．     

Fowler—Nordheim高电场应力引起的MOS结构损伤研究

本文研究了Ｆｏｗｌｅｒ－Ｎｏｒｄｈｅｉｍ高电场应力引起的ＭＯＳ结构损伤及其室温退火。结果表明有四种损伤产生，氧化物正电荷建立，Ｓｉ／ＳｉＯ２快界面态增长，慢界面态产生和栅介质电容下降，当终止应力后，前三种损伤在室温下有所恢复，但最后一种损伤没有变化，实验还表明：产生的慢界面态分布在禁带上半部；高电场下栅介电容呈现无规阶梯型下降，对四种损伤及其室温退火机理进行了讨论，还给出产生的慢界面态对高频电容－     

BF2^＋注入多晶硅栅的SIMS分析

文本采用ＳＩＭＳ技术，分析了ＢＦ２＾＋注入多晶硅栅退火前后Ｆ原子在多晶硅和ＳｉＯ２中的迁移特性，结果表明，８０ｋｅＶ，２×１０＾１５和５×１０＾１５ｃｍ＾－２ＢＦ２＾＋注入多晶硅栅经过９００℃，ｍｉｎ退火后，部分Ｆ原子已扩散到ＳｉＯ２中，Ｆ在多晶硅和ＳｉＯ２中的迁移行为呈现不规则的特性，这归因于损伤缺陷和键缺陷对Ｆ原子的富集作用。     

Fe~＋和H~＋注入引起的Si／SiO_2界面重构现象

针对Ｓｉ－ＳｉＯ２过渡区对于离子注入较为敏感的特点，用１．２ＭｅＶ，剂量１×１０１０ｃｍ－２的Ｆｅ＋和Ｈ＋先后注入ＳｉＯ２－Ｓｉ样品，并用ＸＰＳ技术重点分析了Ｓｉ－ＳｉＯ２界面附近硅的化学结构、组分的变化。结果表明，在界面附近，除了Ｓｉ４＋，Ｓｉ０价态，还存在明显的Ｓｉ２＋价态。这和注入Ｈ＋产生的高温退火以及Ｓｉ—Ｓｉ键或Ｓｉ—Ｈ键的形成有关。     

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.