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Organic solar cells of Al / P3HT / PEDOT: PSS / Indium tin oxide (ITO)/ substrate with different substrates were fabricated and characterized. The most effective efficacy of organic solar-cell on borosilicate substrate with parameters was improved, which yields an open-circuit voltage of 0.778V, a short-circuit current of 3.37E-07, a fill factor of 12.7% and a power conversion efficiency of 1.34E-04%...
A new type of fiber-Bragg-grating based fiber-laser system for long-distance stress/pressure sensing is experimentally demonstrated. We investigate the laser system output characteristics and evaluate sensor performance under different sensing distances incorporate the fiber Bragg gratings. The results show that this semiconductor optical amplifier-based laser sensor possesses a dynamic sensing distance...
The Internet of Things (IoT) refers to uniquely identifiable objects (things) which can interact with other objects through the global infrastructure of wireless/wired Internet. The communication technique among a large number of resource-constrained devices that generate large volumes of data has an impact on the security and privacy of the involved objects. In this paper, we propose an encryption...
Dynamic circuit design offers a smaller area and higher speed than complementary CMOS static circuits. Dynamic logic design is a popular technology used to design high-performance processors. However, the power consumption of the dynamic circuit is larger than that of the static circuit. In this paper, a pipeline operation dynamic-dynamic circuit (DD-circuit) is proposed to obtain both the advantages...
Temperature is known to have significant impacts on the performance, safety and cycle lifetime of Lithium-ion battery (LiB). However, the detail effect of temperature on LiB is not known. In this work, we present the temperature effect of each component in LiB using the electrochemistry based model developed recently. The findings allow us to have a better understanding of the effect of temperature...
As a new type buck converter, it contain high efficiency and high stability, we used Multi-stage switch to improve efficiency. This circuit can adjusted based on the load amount to determine the number of power MOSFET pulse on. So this design have good efficiency, under any load conditions. This circuit is working on 20M Hz, and this type of frequency can make inductor very small to reduce chip's...
The gap-fill capability and plasma charging damage (PCD) of high-density plasma chemical vapor deposition (HDP-CVD) process have been investigated in this study. During HDP-CVD process, the physical sputtering behavior impacts PCD and gap-fill performances. Two sputtering agents, Ar and H2, are admitted to the HDP-CVD. In the process with high bias radio frequency power, the utility of H2 plasma successfully...
This paper proposed recursive Wavelet Elman neural network (RWENN) speed control for synchronous reluctance motor (SynRM). Wavelet neural network (WNN) activation function is replaced by wavelet functions which WNN combines wavelet transform with time domain, analytical capabilities and scale neural network. This paper proposed RWENN that has satisfactory control nonlinear problem in SynRM. We used...
A chopper-stabilized instrumentation amplifier (IA) with reconfigurable inverting and non-inverting modes is realized in CMOS 0.35um technology. A resistive feedback network is proposed to increase gain by lowering the resistance, which eliminates the conventional need for high resistance values. The voltage gain ranges from 19–35 dB and 25–41dB in inverting and non-inverting modes, respectively....
An analytical electrostatic potential model for Junctionless Cylindrical Surrounding-Gate (JLCSG) MOSFETs was developed by solving the 2-D Poisson equation based on parabolic approximation. Furthermore, the expression of electrostatic potential was used to derive the formulas for scale length, threshold voltage, subthreshold slope, and subthreshold drain current. The calculated results of the analytical...
We present nanostructure based piezoelectric and thermoelectric energy harvesters. Using different forms of nanostructuration (heterostrucutration, composite materials, superlattices) further helps improving the performance of such nanodevices that could be used both as self-powered sensors and nanogenerators with IC compatibility. GaN and ZnO nanowires are used as piezoelectric devices. While a specific...
We have developed all-digital and modularized detectors named as basic detector modules (BDMs). They are self-sufficient γ photon detection and analysis systems which capture γ photons and provide the single events information formatted as an event frames. Such BDMs may give the scientist their “LEGO bricks” to build any system according to their wildest inspirations. They will arouse a revolution...
The trend of Natural User Interface (NUI) has gradually accepted by global users and expanded its market demand. Eye tracking technology provided valuable NUI information on user's eye behavior and made NUI become a more effective and precise interactive interface for human research. At present, there are still many limits of eye tracking technology including costs and accuracy. Our major study projects...
Ultra-low-damage nanofabrication techniques using neutral beam technology that taps into the essential nature of nanomaterials and nanostructures are actively developing for innovative nanodevices.
Non-volatile memory has the advantages of non-volatility, circuit density and ignorable leakage power. However, it suffers from the bad write latency and poor write power consumption. In this paper, we propose a page allocation approach on the hybrid DRAM/PCRAM memory structure. By dividing a task into page segments, we can further taking the advantages of good leakage consumption of PCRAM and short...
GIDL and gated diode tests are useful to probe the integrity of surface channel. In this work, the latter seems better to the former in detecting the trapping/detraaping on the channel surface. As VG∼ −0.62V the peak effect of drain current was observed for gate diode test, but not apparent for GIDL test for all of tested devices even though the gate bias was swept back and forth at the accumulation...
In this work, it can be seen that the effect of channel length modulation for NMOSFETs under high-klmetal gate deposition depicts a minor deviation with different nitridation annealing temperatures. This consequence, however, strongly correlates to the channel length and the gate voltage playing as a vertical field. As the channel length is narrowed down, the horizontal field coming from drain voltage...
The junctionless line tunnel field-effect transistor (JLL-TFET) is proposed, which makes use of carrier tunneling through a bias-induced electron-hole bilayer in the vertical direction. The JLL-TFET has a control gate and an auxiliary gate located in opposite directions with different work functions, which causes it to act as a vertical line tunneling field-effect transistor. In addition, this JLL-TFET...
In this study, the affects of electrolyte composition on photovoltaic parameters in dye-sensitized solar cells (DSSCs) are analyzed using response surface methodology. We have obtained the relationship of the electrolyte conductivity, tri-iodide diffusivity, and DSSC efficiency based on LiI, I2, and PMII concentrations in the electrolyte. With the optimal concentration of PMII at 1.4 M, LiI 0 M, and...
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