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Here we show the effects of N,N-Dimethylformamide (DMF) incorporation in the MAI/IPA precursor on the crystallization process of perovskite film based on MAI/IPA precursor. Perovskite thin films were prepared by the two-step solution deposition. With the incorporation of DMF in the MAI/IPA precursor, the device performance can be enhanced effectively, especially for the short-circuit current density...
The ion selectivity of nanochannel due to the wall surface charges is capable of inducing strong coupling between fluidic and ionic motion within the system, which has been overlooked in the study of nanofluidics. This interaction opens up the prospect of operating nanochannel as nanoscale devices for electrokinetic energy conversion. However, the very short channel lengths make the ionic movement...
In view of the interference type closed-loop fiber optic gyroscope, in the process of digital processing, logic circuit is the key to the whole system. This paper adopts a logic circuit control method based on FPGA. FPGA is used to produce square wave modulation signal with digital phase ladder wave feedback signal through D/A converter, the sum of the input to the gain control circuit, the gain control...
The performance of organic thin film transistors (OTFTs) with dual pentacene channel layer (DL) has been studied. Silvaco ATLAS is used to simulate the influence of different device structure parameters. The result shows that the variation in contact placement, thickness of high mobility pentacene layer, the total thickness of two pentacene layers and the height of source and drain result in different...
A SiC Schottky barrier diode (SBD) with a novel junction termination structure including two mesas and one P+ guard ring was proposed and demonstrated. Under reverse bias, charge will be attracted to the position of guard ring instead of concentrating at the edge of Schottky junction due to the existence of the first mesa. In addition, the second mesa will further cause the high electronic field expanding...
The influences of reverse voltage stress on fluorine plasma treated AlGaN/GaN Schottky barrier diodes (SBDs) have been investigated. The carrier transport process during the reverse voltage stress is analyzed in detail, which can fully explain the various phenomena of the stressed devices. Furthermore, C-V measurements and the calculation of the barrier heights both bring a good agreement on the analysis.
A simple and effective method to grow GaN on Si substrates has been achieved. The method that GaN comes out from a submicron and deep hole with nearly zero dislocations above the mask is demonstrated. This work proves that reducing the epitaxy area by using mask and increasing the depth to width ratio of pattern contribute to filtering the dislocations and improving the quality of GaN.
New 3D integration technology using self-assembly and Cu nano-pillar hybrid bonding are developed to achieve high-throughput and high-precision multichip-to-wafer stacking. Many known good dies (KGDs) are simultaneously self-assembled with a high alignment accuracy making use of liquid surface tension in a face-up configuration on a carrier wafer, called SAE (Self-Assembly and Electrostatic) carrier...
This paper reports a mechanical test platform for micropore-arrayed membrane with a Chromatic Confocal Imaging to measure the deflection. A demonstration of the measurement is presented by testing a Parylene C filtration membrane. The test result is analyzed by a classical model of thin plate deflection and the deformation of the membrane in filtration process is estimated.
In order to strengthen safety in abnormal environment, we analyze safety on the Solid State Thermal Mechanical Discriminator (SSTMD). Firstly, we calculate the number of Thermo-Mechanical Switches (TMSs) by means of a method with probability theory when the probability of unintentional unlock on the SSTMD is less than 10−6. Then the probability of safety failure on the SSTMD is estimated by analyzing...
Analog conductance of resistive memories is attractive for implementing the weights in neuro-inspired algorithms. One of the most popular deep learning algorithms is the convolutional neural network (CNN). In this paper, we review our recent progress on using resistive memories for neuro-inspired computing. First, we optimized the iterative programming protocol to tune the weights of HfOx based resistive...
A dielectrophoretic (DEP) microfluidic chip with an array of three-dimensional (3D) vertical electrodes aside the sidewall of main microchannel is designed, fabricated and applied in separation of particles. Lateral DEP force is got when proper direct current (DC) or alternating current (AC) is applied on these side-wall electrodes. Experimental results for sorting 10µm particles have been achieved...
The emergence of multicore era poses great challenges to software engineers and how to develop the potential of multi-core has become the hot topic. Based on the outstanding work done by PLUTO framework, this paper proposes an improved algorithm upon polyhedral model for more efficient automatic parallelization, especially for communication-free parallelism. Detailed implementation reveals that this...
In this paper, we propose a Nano-pillar HIT solar cell by using different etching methods. First, we use silvaco TCAD Atlas to simulate and discuss the structure. According to simulation results, we obtain a 25.58% conversion efficiency Nano-pillar HIT solar cell which is better than the conventional HIT solar cell (24.7%) [1]. All of the parameters are the same, which is calibrated form [1]. The...
In this work, we report a feasible compact solution to enhance the dynamic performance of GaN-on-Si power devices by integrating a photon source into the drain terminal of a heterojunction field-effect transistor (FET). Photons can be generated from the photonic-ohmic drain (POD) synchronously with turning on of the channel current. These on-chip generated photons can optically pump the electron traps,...
This paper proposes a hysteretic control buck converter with constant switching frequency. There even when the input/output voltage ratio in the steady changes, the switching frequency does not change (only on-time changes). On the other hand, when the load changes in the transient state, the switching frequency changes for quick response. We have designed and simulated the proposed circuit, and confirmed...
This paper presents the LVS method to verify electric test key's model supported component and the test object's connectivity to the test pad. Here we solved the LVS issue of non-model supported component with the introduction of pseudo resistors as separator between the test object and the probe pad. With the regulated test manual format, automated schematic generation is developed to improve the...
This paper proposes a Reconfigurable and Fault-tolerant Routing Algorithm (RFRA), which is designed based on the Fault-Tolerant Odd-Even turn model (FTOE). RFRA can tolerate all single link failures without exploiting virtual channels by resetting the route rule. Applying FTOE rules, RFRA not only balances the load around the faulty link but also shortens the fault-tolerant paths. Simulation results...
In this paper, a liquid nitrogen temperature range CMOS smart temperature sensor is presented. Substrate PNP transistors are used for temperature sensing and generating the ADC's reference voltage. Errors resulting from non-idealities in the whole system circuitry are reduced to the 0.1K level. This is achieved by using dynamic element matching (DEM), a chopped proportional to absolute temperature...
In this paper, a reliable and clear clock architecture and execution scheme is illustrated for the direct broadcast satellite set-top-box HD-SOC IC chip. To solve the stable and flexible clock/reset signals' generation and to satisfy the chip's debug/test bypass control, this paper gives a robust and flexible clock network realization. Also, the whole HD-SOC is manufactured with the TSMC90nm technology...
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