The contact NiSiGe/SiGe was formed on n-type epitaxial Si 0.84 Ge 0.16 by isothermal annealing at 550°C for different time durations. Thermal stability of the contact was characterized by different methods. Mate...
详细信息
The contact NiSiGe/SiGe was formed on n-type epitaxial Si 0.84 Ge 0.16 by isothermal annealing at 550°C for different time durations. Thermal stability of the contact was characterized by different methods. Material characterizations show that NiSiGe suffers from agglomeration issue while keeping in the mono-germanosilicide phase under the thermal budget in the experiment. The Schottky contact properties of NiSiGe on n-SiGe were evaluated by current-voltage (I-V) technique at room temperature. The contact shows a reduced Schottky barrier height (SBH) with a continuously increased ideality factor and leakage current with the increase of annealing time, indicating thermal degradation of the contact quality. The results show that besides material analysis, electrical measurement is also a sensitive and supplemental way to characterize the thermal stability of Ni germanosilicide film.
The barrier height modulation of Ni-silicided Schottky contacts fabricated on n-Si(100), n-Si(110), p-Si(100) and p-Si(110) substrate using an antimony (Sb) interlayer was investigated. The Sb layer was directly sputt...
详细信息
The barrier height modulation of Ni-silicided Schottky contacts fabricated on n-Si(100), n-Si(110), p-Si(100) and p-Si(110) substrate using an antimony (Sb) interlayer was investigated. The Sb layer was directly sputter-deposited on Si substrate followed by the regular Ni deposition and rapid thermal annealing. It is revealed that NiSi can still form even with the Sb interlayer and the effective Schottky barrier height can be significantly modulated on all kinds of Si substrates.
An important trend of the modern mobile device is that a single user terminal that will be capable of receiving signals of multiple different transmission standards. Most of these transmission standards employ a forwa...
An important trend of the modern mobile device is that a single user terminal that will be capable of receiving signals of multiple different transmission standards. Most of these transmission standards employ a forward error correction decoding, including Reed-Solomon, Viterbi, Turbo and low-density parity check and so on. In this overview paper we review several programmable and area-efficient decoder architectures within one hardware platform. We show, in the case of guaranteed throughput performance, compared with multi-core implementation way, better power consumption performance can be gotten.
In this work, NbAlO dielectric films were grown by atomic layer deposition method on InP substrate and were treated with rapid thermal annealing (RTA) process at 500 °C. Synchrotron radiation x-ray reflectivity m...
详细信息
HfO2 dielectric films were grown on Ge substrate and annealed. High resolution transmission electron microscopy indicated that postdeposition annealing promoted further crystallization of HfO2 films and aggravated int...
详细信息
We report a simulation study of the characteristics of a new tunnel field effect transistor (TFET), i.e., vertical TFET (VTFET). The new VTFET has a different working principle compared with the traditional latera...
详细信息
We report a simulation study of the characteristics of a new tunnel field effect transistor (TFET), i.e., vertical TFET (VTFET). The new VTFET has a different working principle compared with the traditional lateral TFET (LTFET), which most of the recent studies are focused on. Although both type TFETs are based on band to band tunneling, the tunneling occurs perpendicular to the oxide-Si interface in the VTFET whereas it occurs parallel in LTFET. The VTFET has many advantages compared with the LTFET, such as a steeper subthreshold slope as the gate voltage control the tunneling directly. The steep subthreshold slope results in low OFF current and capability for low power operation.
The characteristics of PNIN tunneling field effect transistor (TFET) with nanometer sizes are investigated using TCAD simulation. The results show that the performance and variations of the' device strongly de...
详细信息
The characteristics of PNIN tunneling field effect transistor (TFET) with nanometer sizes are investigated using TCAD simulation. The results show that the performance and variations of the' device strongly depends on the key parameters such as the thickness and the doping of the middle N layer. (1) An increase in the thickness of the N layer to ~5 run will effectively enhance the drive current, reduce the electric field normal to the Si/SiO2 interface (Ex), and reduce the variation of the threshold voltage induced by the variation in the N layer thickness. (2) A decrease in the thickness of Si film down to ~5 run will also reduce Ex, but with minor effect on the on current. Therefore, the overall characteristic of PNIN devices improves with reducing the Tsi. (3) A proper doping such as ~2xl0l9cm-3 in the N layer can remove the dependence and therefore the variation of the threshold voltage on the thickness of Si film.
In this paper, graphene oxide (GO) was modified insitu on an electrochemical electrode array for attachment of protein. GO suspension made from natural graphite flakes was directly dip-coated onto the Au working el...
详细信息
In this paper, graphene oxide (GO) was modified insitu on an electrochemical electrode array for attachment of protein. GO suspension made from natural graphite flakes was directly dip-coated onto the Au working electrodes. Detected by cyclic voltammetry, the peak current of GO on Au electrode increased by 1μA as compared with bare gold electrode. Modified graphgene oxide (MGO) with stable active esters was formed by in-situ modifying GO with N-ethyl-N'-(3-dimethylaminopropyI) carbodiimide hydrochloride (EDAC)/ N-hydroxysuccinimide (NHS). MGO was ready for protein attachment. An immunesensor chip (GO-antigen) was prepared by tuberculosis (TB) antigens bound with MGO. The peak of CV curve of GO-antigen increased by about 3μA as compared with that of MGO, however, after the GO-antigen reaction with the antibody, the peak of the current decreased 4μA. Such results showed potential applications of the immunosensor.
Pd electrode-based metal-oxide-semiconductor (MOS) capacitors with high density Ru-based nanocrystals in atomic-layer-deposited Al 2 O 3 dielectric have been fabricated and electrically characterized, exhibiting robu...
详细信息
Pd electrode-based metal-oxide-semiconductor (MOS) capacitors with high density Ru-based nanocrystals in atomic-layer-deposited Al 2 O 3 dielectric have been fabricated and electrically characterized, exhibiting robust programming and erasing characteristics even under low voltages. Further, the tunable memory characteristics of the MOS capacitors are demonstrated by varying the tunneling-layer (T)/blocking-layer (B) thickness ratio, and the underlying mechanisms are addressed.
Clock skew scheduling is an effective technique in performance optimization of sequential circuits. However, with process variations, it becomes more difficult to reliably implement a wide spectrum of clock delays at ...
详细信息
ISBN:
(纸本)9781424475162
Clock skew scheduling is an effective technique in performance optimization of sequential circuits. However, with process variations, it becomes more difficult to reliably implement a wide spectrum of clock delays at the registers. Multidomain clock skew scheduling is a good option to overcome this limitation. In this paper, we propose a practical method to efficiently and optimally solve this problem. A framework based on branch-and-bound is carefully designed to search for the optimal clocking domain assignment, and a greedy clustering algorithm is developed to quickly estimate the upper bound of cycle period for a given branch. Experiment results on ISCAS89 sequential benchmarks show both the optimality and efficiency of our method compared with previous works.
暂无评论