共查询到20条相似文献,搜索用时 78 毫秒
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自然反型层光电二极管是利用在P型硅片上生长热氧化层时形成的自然反型层作为感应的NP结的一侧而制得的。本文报导作者试制的IL90型自然反型层光电二极管的初步结果。器件暗电流小于7×10~(-10)A(在100mV下测试,有效光敏面积1cm~2);光谱响应峰值向短波方向明显移动;光谱响应与人眼视见函数相近;对短波长光有较高的绝对响应度,例如,在365um处,为0.293μA/μW;在254um处,为0.113μA/μW。 相似文献
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设计了一种新型叉指状近红外 Si0 .8Ge0 .2 / Si pin横向光电探测器。采用半导体器件模拟软件 Atlas分别对该器件平衡条件下物理特性及反向偏压下电场分布、光电特性进行了模拟 ;对实际制作的光电探测器进行了测试 ,结果表明 :其波长响应范围为 0 .4~ 1 .3μm,峰值响应波长在 0 .93μm,响应度达 0 .3 8A/ W,寄生电容小于 2 .0 p F。实验结果和模拟结果符合得很好。其良好的光电性能为应用于近红外光的高速、低工作电压硅基光电集成器件提供了可能 相似文献
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利用数值计算方法分析了高速光电探测器的耗尽区宽度与响应度及响应速度的关系.分析结果表明,耗尽区宽度选择应在响应度和响应速度之间折中,在响应度满足使用要求的情况下,尽量提高响应速度.利用该分析结果设计了台面型InGaAs/InP pin高速光电探测器材料结构.通过优化腐蚀工艺与钝化工艺,解决了器件腐蚀形貌和钝化问题.结合其他微细加工工艺完成了器件的制备,器件光敏区直径50 μm.测试结果显示,在反向偏压为5V时,暗电流小于1 nA,电容约为0.21 pF.此外,在1 310 nm激光辐照下,器件的响应度约为0.95 A/W,-3 dB带宽超过10 GHz,其性能满足10 Gbit/s光纤通信应用要求. 相似文献
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采用基于硝酸/氢氟酸/磷酸/硫酸混合液的湿法腐蚀工艺,实现了高吸收效率的黑硅结构的制备与工艺集成,获得了具有近红外响应增强效果的黑硅PIN光电探测器,并与未集成黑硅的PIN光电探测器的性能参数进行了对比测试.测试结果显示,黑硅光电探测器在1 060 nm波长下的响应度达到0.69 A/W(量子效率80.7%),较未集成黑硅的器件提高了 116%;黑硅探测器暗电流小于8 nA,响应时间小于8 ns,电容小于9 pF,与未集成黑硅的器件相当.得益于工艺兼容性,所采用的黑硅技术具有广泛应用于硅基近红外PIN,APD,SPAD,SPM等光电探测器的潜力,可显著提高器件的响应率、量子效率、响应速度、击穿电压温度系数等性能. 相似文献
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Michael Reilly 《半导体技术》2004,29(12)
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. 相似文献
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Thomas M.Trexler 《半导体技术》2004,29(5)
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. 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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Qi-jiang Ran Pei-de Han Yu-jun Quan Li-peng Gao Fan-ping Zeng Chun-hua Zhao 《光电子快报》2008,4(4):239-242
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. 相似文献
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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. 相似文献
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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. 相似文献
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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. 相似文献
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《中国通信》2014,(7)
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 相似文献