ZnO-based thin-film transistors (TFT) have been fabricated on p-Si (100) substrates by radio frequency (rf) magnetron sputtering at room temperature with a bottom gate configuration. The XRD and SEM show that ZnO film...
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ISBN:
(纸本)9781424421855
ZnO-based thin-film transistors (TFT) have been fabricated on p-Si (100) substrates by radio frequency (rf) magnetron sputtering at room temperature with a bottom gate configuration. The XRD and SEM show that ZnO films had high crystalline quality. The ZnO films present an average optical transmission (including the glass substrate) of 80% in the visible part of the spectrum. The electrical properties of ZnO-based TFTs were investigated by I D -V D and I D -V G measurements. The ZnO TFT operates in the enhancement mode with a channel mobility of 6.86 cm 2 /V · s. The combination of transparency, high channel mobility and room temperature processing makes the ZnO-TFT a very promising low cost optoelectronic device for the next generation of flat panel display (FDP).
The Co-doped titanium dioxide nanotubes were synthesized via the aqueous solution reaction. After hydrogenation, room temperature ferromagnetism (RTFM) was found in the cobalt doped titanium dioxide nanotubes at 300 K...
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ISBN:
(纸本)9781424421855;9781424421862
The Co-doped titanium dioxide nanotubes were synthesized via the aqueous solution reaction. After hydrogenation, room temperature ferromagnetism (RTFM) was found in the cobalt doped titanium dioxide nanotubes at 300 K by the vibrate sample magnetometer. As the concentration of cobalt increased, the observed ferromagnetism became stronger. The X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy and energy dispersive X-ray spectroscopy were performed and excluded the existence of cobalt cluster. Therefore, the magnetic ions and oxygen vacancies induced by hydrogenation contribute to the observed ferromagnetism at 300 K.
Low-energy electron beam lithography has a variety of *** traditional electron scattering model consisting of Rutherford elastic scattering cross section and Bethe continuous slowing down approximation formula are not...
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Low-energy electron beam lithography has a variety of *** traditional electron scattering model consisting of Rutherford elastic scattering cross section and Bethe continuous slowing down approximation formula are not suitable for low-energy electron beam lithography.A more accurate physical model describing the low-energy electron scattering processes was proposed in this *** Monte Carlo method was used to simulate the complex scattering processes of Gaussian-distribution low-energy electron beam in the target of thin film on thick *** simulation results show that low-energy electron beam lithographyhas advantages of high throughput,low proximity effects and small damage to the underlying *** is in agreement with the conclusion got from Lee et al's and Peterson et al's experiments.
<正>A voltage doubler,which avoids body effect and then improves rise time and efficiency even with 1V power supply,is *** art is designed for word line boosting,using 0.18um EEPROM *** only the voltage doubler can ...
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<正>A voltage doubler,which avoids body effect and then improves rise time and efficiency even with 1V power supply,is *** art is designed for word line boosting,using 0.18um EEPROM *** only the voltage doubler can work with capacitive load normally,but also it can supply load current and achieve higher *** whole circuit can be implemented on chip and is suitable for low voltage *** addition,theoretical analysis and simulation results have been given.
In this paper, the characteristics and mechanism of the transition metal oxide (TMO) based resistive switching memory (RRAM) devices were addressed. The results show that doping in oxide matrix materials, electrode ma...
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ISBN:
(纸本)9781424421855
In this paper, the characteristics and mechanism of the transition metal oxide (TMO) based resistive switching memory (RRAM) devices were addressed. The results show that doping in oxide matrix materials, electrode material, and operating mode of the set/reset process may significantly affect the resistive switching behaviors of RRAM devices. Optimizing the dopants and matrix materials, electrode materials, device structure, and operating modes and understanding the related mechanisms are required to achieve the excellent device performance of TMO-based RRAM for the memory application. A unified physical model, based on the electron hopping transport between oxygen vacancies along the conductive filament paths, is used to explain and describe the resistive switching behaviors of the TMO based RRAM devices.
In this paper,the recovery characteristics of negative bias temperature instability(NBTI) of pMOSFETs under drain bias were *** is observed that,the drain bias not only worsens the NBTI degradation in high |V| regio...
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In this paper,the recovery characteristics of negative bias temperature instability(NBTI) of pMOSFETs under drain bias were *** is observed that,the drain bias not only worsens the NBTI degradation in high |V| region but also suppresses the recovery ratio of *** time evolutions of recovery show that the drain bias dependent NBTI recovery is mainly related to the fast recovery effect in initial ls. While in long time scale,the recovery obeys power law dependence on time.A physical model based on donor-type interface traps neutralization at the beginning of recovery is proposed to explain the suppressed recovery ratio under drain bias.
Intra-die fluctuations in the nanoscale CMOS technology emerge inherently to geometrical variations such as line edge roughness(LER) and oxide thickness fluctuations (OTF).A full 3-D statistical simulation is presente...
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Intra-die fluctuations in the nanoscale CMOS technology emerge inherently to geometrical variations such as line edge roughness(LER) and oxide thickness fluctuations (OTF).A full 3-D statistical simulation is presented to investigate the impact of geometrical variations on the FinFETs *** this work,roughness is introduced by a Fourier analysis of the power spectrum of Gaussian autocorrelation *** influence of different geometrical variation sources is compared and *** results shows that FinFETs performance is most sensitive to the fin LER,which causes a remarkable shift and fluctuations in threshold voltage, drain induced barrier lower effect(DIBL) and leakage current. The impact of gate LER follows that of fin *** simulation also suggests quantum confinement effect accounts for the aggressive fluctuations due to fin LER.
<正>Ⅰ.Introduction Flash memories are one of the basic building blocks of today’s electronic *** floating gate type of Flash memory is impossible to scale down to beyond 45nm due to the difficulty in scaling the t...
<正>Ⅰ.Introduction Flash memories are one of the basic building blocks of today’s electronic *** floating gate type of Flash memory is impossible to scale down to beyond 45nm due to the difficulty in scaling the tunnel oxide and the gate coupling ratio[1].Because of the difficulty in maintaining high gate coupling ratio and preventing cross talk between neighboring cells,NAND technology is forecasted to migrate gradually from floating gate devices(FG) to charge trapping memory(CTM)[2]. CTM are not sensitive to tunnel oxide damage since the charge is stored in discrete traps and one weak spot does
The total dose radiation effect(TDRE) has been regarded as one of the most harmful factors to degrade MOS *** this paper,a simple new method called avalanche injection of holes is introduced to simulate or displace ...
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The total dose radiation effect(TDRE) has been regarded as one of the most harmful factors to degrade MOS *** this paper,a simple new method called avalanche injection of holes is introduced to simulate or displace the radiation experiments to determine the TDRE of MOS *** TDRE, avalanche injection of holes can also provide sufficient holes to flow into the gate oxide layer where a small part of these holes can be trapped in the defects and cause a shift of flat-band voltage(ΔV) of MOS device,we can conclude that the structure which has a greaterΔV would be easier to be affected by TDRE.
The conventional matched filter structures are investigated in this paper,An acquisition circuit based on the polyphase form matched filter in Global Positioning System(GPS) receiver is *** the cost of less hardware r...
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The conventional matched filter structures are investigated in this paper,An acquisition circuit based on the polyphase form matched filter in Global Positioning System(GPS) receiver is *** the cost of less hardware resource,the significant advantage in the speed of synchronization is *** 32×128 polyphase form matched filter,the critical path delay approximately reduces 1/2,the sample frequency would be double.
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