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2006 IEEE International Conference on Semiconductor Electronics最新文献

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How the Optical Properties of Au Nanoparticles are Affected by Surface Plasmon Resonance 表面等离子体共振如何影响金纳米粒子的光学性质
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381035
Yen-Hsun Su, W. Lai, L. Teoh, H. Hong, M. Hon
Gold nanoparticles (Au NPs) have been attracting more attention because they have many color varieties in the visible region based on plasmon resonance, which is due to the collective oscillation of the electrons at the surface of the nanoparticles. We prepared 6 nm Au NPs to modify the surface of the glass substrate. Surface plasmons resonance of Au NPs in toluene is between 500 nm and 600 nm. When Au NPs are modified on the glass substrate, the peak of surface plasmons resonance of Au NPs is shifted. We employed spectral ellipsometry to detect optical properties. Then the characteristics of surface plasmons resonance of Au NPs is determined by reflective index. The performance of surface plasmons resonance of Au NPs on the glass substrate is simulated and shown.
金纳米粒子(Au NPs)由于其表面电子的集体振荡,在等离子体共振的可见光区域具有多种颜色变化而受到越来越多的关注。我们制备了6 nm的Au NPs来修饰玻璃基板的表面。金纳米粒子在甲苯中的表面等离子体共振在500 ~ 600 nm之间。当在玻璃衬底上修饰金纳米粒子时,金纳米粒子的表面等离子体共振峰发生了移位。我们采用光谱椭偏法检测其光学性质。然后用反射指数确定了金纳米粒子的表面等离子体共振特性。模拟并展示了金纳米粒子在玻璃基板上的表面等离子体共振性能。
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引用次数: 1
Crosstalk Enhancement in Multiplexer/Demultiplexer Based Arrayed Wavelength Grating in Dense Wavelength Division Multiplexing 密集波分复用中基于阵列波长光栅的复用/解复用串扰增强
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381050
S. Elfaki, A. Kareem, A. Mohammed, S. Shaari
In this paper we describe the performance of the Multiplexer/Demultiplexer (MUX/DEMUX) in the Dense Wavelength Division Multiplexer (DWDM) technology based on arrayed waveguide grating (AWG). The accumulated crosstalk in large-scale AWG solved by the cascade-connection of small AWGs. We propose two branches of 64 channels each have two stages of AWG cascaded as second and third stages. We introduce an interleaver filter based on AWG to produce odd and even optical channels (64) as an input to each branch, which relax the system by doubling the space between channels.
本文描述了基于阵列波导光栅(AWG)的密集波分复用(DWDM)技术中复用/解复用器(MUX/DEMUX)的性能。采用小AWG串级连接的方法解决了大型AWG中的累积串扰问题。我们提出了64个通道的两个分支,每个分支都有两个阶段的AWG级联作为第二和第三阶段。我们引入了一个基于AWG的交织滤波器来产生奇数和偶数光通道(64)作为每个分支的输入,通过将通道之间的空间加倍来放松系统。
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引用次数: 3
A New High Resolution Frequency and Phase Synthesis Method based on `Flying-Adder' Architecture 一种基于“飞加法器”结构的高分辨率频率和相位合成新方法
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.380684
H. Gharaee, E. Tathesari
High speed electronic systems demand frequency synthesizer of high resolution, wide bandwidth and fast switching speed. The "Flying-Adder" architecture is a frequency and phase synthesis technique that is based on a VCO of multiple delay stages. This Flying-Adder is implemented in Quartus software which its result shows that the highest frequency is about 83 MHz, when VCO oscillates at 5.2 MHz. In some cases, this architecture has a barrier of inherent jitter on the output frequency. In this brief, a new method is proposed for eliminating such jitter problem. This method is caused to achieve exact phase and frequency. This design is implemented in Quartus software with EP1K30QC208-1 device from ACEX IK series. When VCO is running at 0.651-10 MHz high resolution output frequency is achieved.
高速电子系统要求频率合成器具有高分辨率、宽带宽和快切换速度。“飞行加法器”架构是一种基于多个延迟级的VCO的频率和相位合成技术。该飞加法器在Quartus软件中实现,结果表明,当VCO振荡频率为5.2 MHz时,最高频率约为83 MHz。在某些情况下,这种结构在输出频率上有固有抖动的障碍。本文提出了一种消除这种抖动问题的新方法。这种方法可以实现精确的相位和频率。本设计采用ACEX IK系列的EP1K30QC208-1器件在Quartus软件中实现。当VCO工作在0.651-10 MHz时,可实现高分辨率输出频率。
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引用次数: 3
Dependence of Texture in Al Bondpads on Ta/TaN Bilayer Barrier and its Correlation to Optical Reflectivity in 0.13μm IC Technology 0.13μm集成电路中Al键垫织构对Ta/TaN双层势垒的依赖及其与光学反射率的关系
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.380739
Lee Yuan Ping, R. R. Nistala, H. Younan, M. Bhat
In this paper, the dependence of crystallographic orientation in Aluminum thin films grown on different barrier-metal substrate schemes (Ta or Ta/TaN) will be presented. The orientation of Al grains will be shown to have a bearing on the material characteristics, which are important in IC fabrication from the perspective of both the device functionality and reliability. X-ray powder diffraction studies indicate that the films deposited on a single Ta layer are randomly oriented. On the other hand, a Ta/TaN bilayer substrate scheme results in preferred orientation along Al(111). A correlation will be established between the grain orientation and optical reflectivity properties of Al films. Moreover, the optical appearance of bondpads and their bondability are also influenced by the orientation of Al grains.
本文将介绍在不同的势垒金属衬底方案(Ta或Ta/TaN)上生长的铝薄膜晶体取向的依赖关系。Al晶粒的取向将显示出对材料特性的影响,从器件功能和可靠性的角度来看,这在IC制造中都是重要的。x射线粉末衍射研究表明,沉积在单个Ta层上的薄膜是随机取向的。另一方面,Ta/TaN双层衬底方案导致沿Al(111)的优选取向。建立了Al薄膜的晶粒取向与光学反射率之间的关系。此外,键垫的光学外观和键合性也受到Al晶粒取向的影响。
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引用次数: 0
Simulation of Piezo-Resistive Metal Gauge on Rectangular Membrane for Low Pressure Application 低压矩形膜压阻式金属表的仿真研究
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381070
M.Y. Hamid, U. Thangamani, P. Vaya
Piezo-resistive metal gauge on rectangular membrane design and its simulation for low pressure application is presented in this paper. Small deflection analytical equations are derived for both simply supported and clamped edge boundary conditions. The design and orientation of grid pattern on rectangular membrane is based on ANSYS simulation results. It is used to find out maximum strain locations to achieve high sensitivity. Maximum of 0.3509 micro strain and maximum resistance change in grid = 90.6271 micro-ohm are achieved for an applied load of ImPa. The sensitivity of the gauge is 0.35 muepsiv/mPa.
本文介绍了矩形膜压阻式金属压力表的设计及其低压应用仿真。推导了简支和固支两种边界条件下的小挠度解析方程。矩形膜上网格图案的设计和定位基于ANSYS仿真结果。它用于找出最大应变位置,以获得高灵敏度。在施加ImPa载荷时,最大微应变为0.3509微应变,栅格最大电阻变化为90.6271微欧姆。该仪表的灵敏度为0.35 μ epsiv/mPa。
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引用次数: 2
Adopting Electroabsorption Modulator for the WLAN 802.11a Radio over Fibre System 采用电吸收调制器的WLAN 802.11a光纤无线系统
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.380762
S. Yaakob, M. Ismail, R. Mohamad, M. Yahya, A. Mat, M. Mokhtar, H. Rashid
This paper presents the evaluation of radio over fibre (ROF) capability with electroabsorption modulator (EAM) as a downlink photodetector (PD) and uplink radio frequency (RF) modulator. The results show that the EAM device has potential to be adopted as the transceiver at the remote antenna unit (RAU) for the system. The 130 m ROF system with biased EAM is capable to obtain a symmetrical WLAN 802.11a data rate of 18 Mbps with laser diode output power of 8.7 dBm.
本文介绍了用电吸收调制器(EAM)作为下行光电探测器(PD)和上行射频调制器对光纤无线电(ROF)性能的评价。结果表明,EAM器件具有作为系统远端天线单元(RAU)收发机的潜力。带有偏置EAM的130 m ROF系统能够在激光二极管输出功率为8.7 dBm的情况下获得18 Mbps的对称WLAN 802.11a数据速率。
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引用次数: 5
Contact Hole Printing in Binary Mask by FLEX Technique 用FLEX技术打印二进制掩模中的接触孔
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381098
Cheong Yew Shun, Ko Bong Sang, M.J. Bin Manaf, K. Ibrahim, Zahid Jamal
The shrinking of contact opening is inevitable, as the technology progresses. The most obvious shrink strategies, wavelength reduction and phase-shifting masks (PSM) offer the most significant improvements to meet these demands, but at a hefty price. By using focus latitude exposure technique (FLEX) it is possible to print down contact hole with reasonable processing latitude using 248 nm wavelength lithography and binary mask. A few parameters were varied to obtain suitable condition. Several feature sizes were printed and measured to get the proper combination of the print bias and focal distances with acceptable process margin. Verification on production wafer is needed for different pitch of feature sizes and fine-tuning on the focal distance for optimum results.
随着技术的进步,触点开度的缩小是不可避免的。最明显的收缩策略,波长减少和相移掩模(PSM)提供了最显著的改进,以满足这些需求,但代价高昂。利用聚焦纬度曝光技术(FLEX),利用248nm波长光刻和二元掩模,可以在合理的加工纬度下打印接触孔。对几个参数进行了调整以获得合适的条件。打印和测量了几个特征尺寸,以获得打印偏差和焦距的适当组合,并具有可接受的工艺裕度。需要在生产硅片上验证不同间距的特征尺寸和微调焦距以获得最佳效果。
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引用次数: 0
Effect of N2 and O2 Anneal Gas Ratio For Low Resistance p - Type ZnO Formation N2和O2退火气体比对低阻p型ZnO生成的影响
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381112
H. A. Hamid, M. Abdullah, A. Aziz, N. Al-Hardan, S. A. Rosli
P - type conduction in ZnO thin films was realized by codoping method. ZnO thin films were prepared on silicon (111) substrates by DC magnetron sputtering using pure zinc disk as target and underwent heat treatment at 300degC for 1 hr. Results indicated that the co doped p - type ZnO had the lowest resistivity of 3.412 times 10-3 Omega.cm with a carrier concentration of 1.54 times 1022 cm-3.
用共掺杂的方法实现了ZnO薄膜的P型导电。以纯锌片为靶材,采用直流磁控溅射法在硅(111)衬底上制备ZnO薄膜,并在300℃下热处理1小时。结果表明,共掺杂p型ZnO的电阻率最低,为3.412倍10-3 ω。载流子浓度为1.54 × 1022 Cm -3。
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引用次数: 2
The Effect of Surface Microstructure on The Response of Titanium Dioxide Coated with Cobalt-Porphyrin Thin Films Towards Gases in Quartz Crystal Microbalance Sensor 表面微结构对二氧化钛包覆钴卟啉薄膜对石英晶体微平衡传感器气体响应的影响
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.381065
S. Arshad, M. Salleh, M. Yahaya
A single-layer and multi-layer titanium dioxide (TiO2) coated with dye porphyrin thin films were prepared on Quartz Crystal Microbalance (QCM) using sol-gel dip coating method and were tested for sensing of volatile organic compounds (VOCs). The porphyrin was 2,3,7,8,12,13,17,18-octaethyl- 21H,23H-porphine cobalt (II). The sensing sensitivity was based on the change in the fundamental frequency of the QCM upon exposure towards three vapor samples, namely ethanol, acetone and 2-propanol. It was found that the thin films were sensitive towards all vapors and the sensing sensitivity was affected by the number of film layers. Although the three-layer film exhibited higher frequency response compared with the other films that have small number of layers, the sensing properties of this film are not repeatable and less selective. The performance of the QCM sensor was depended on microstructure of the thin film which was varied through the number layers.
采用溶胶-凝胶浸渍法在石英晶体微天平(QCM)上制备了单层和多层涂覆染料卟啉薄膜的二氧化钛(TiO2),并对其挥发性有机化合物(VOCs)进行了检测。卟啉为2、3、7、8、12、13、17、18-辛乙基- 21H、23h -卟啉钴(II)。感应灵敏度基于暴露于乙醇、丙酮和2-丙醇三种蒸汽样品时QCM基频的变化。结果表明,薄膜对所有的蒸汽都很敏感,其敏感程度受薄膜层数的影响。虽然三层薄膜的频率响应比其他层数较少的薄膜高,但该薄膜的传感特性不具有可重复性和选择性。QCM传感器的性能取决于薄膜的微观结构,薄膜的微观结构随层数的变化而变化。
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引用次数: 0
Photolithography Process Improvement for Thick Implant Resist Using 120°C Post-Apply Bake 应用120°C后烤技术改进厚植入抗蚀剂光刻工艺
Pub Date : 2006-11-01 DOI: 10.1109/SMELEC.2006.380760
S. I. Yet, E.C. Goh, F. Lim, A. E. Ling, B.C. Lee, Y.K. Ng, W. Sheu
Conventional I-line lithography process utilizes single post-apply bake temperature to unify and simplify the process. As design rule shrinks and mask field size increases, tighter specification is applied on non-critical implant layers, including thick implant resist with thickness typically 4.0 mum and above. Poor uniformity for CD & overlay was observed for thick implant resist layer. Systematic uncorrectable overlay residue was observed from the overlay map. Cross-section analysis shows asymmetric resist profile existed, causing inaccurate signal reading during measurement. Besides, huge amount of resist out-gassing found contaminate the CD-SEM gun tip and causing problem during implant process. In this paper, the problems of thick implant resist layer is analyzed and the process improvement on thick implant resist layer by using higher post-apply bake temperature is introduced. The resist profile changed was checked in detail and the resist removal after implant was verified. As a result, both CD & overlay uniformity was greatly improved. New process with higher post-apply bake condition was fully qualified with comparable wafer yield.
传统的i线光刻工艺采用单一的后涂烘烤温度,以统一和简化工艺。随着设计规则的缩小和掩模场尺寸的增加,在非关键种植体层上应用更严格的规格,包括厚度通常为4.0 mm及以上的厚种植体抗蚀剂。对于较厚的种植抗蚀剂层,CD和覆盖均匀性较差。从覆盖图中观察到系统的不可校正覆盖残留。截面分析表明,电阻分布不对称,导致测量时信号读取不准确。此外,发现大量的抗蚀剂出气污染了CD-SEM枪尖,造成了植入过程中的问题。本文分析了厚种植抗蚀层存在的问题,介绍了采用较高的涂敷后烘烤温度对厚种植抗蚀层进行工艺改进的方法。详细检查了抗蚀剂变化情况,并验证了植入后的抗蚀剂去除情况。结果,CD和覆盖均匀性都得到了极大的改善。新工艺具有较高的涂后烘烤条件,完全合格,晶圆收率相当。
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引用次数: 3
期刊
2006 IEEE International Conference on Semiconductor Electronics
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