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101.
X. S. Miao Y. C. Chan C. K. H. Wong D. P. Webb Y. W. Lam K. M. Leung D. S. Chiu 《Journal of Electronic Materials》1997,26(4):387-390
The deposition of a protective film to increase the hardness of an organic photoconductor (OPC) surface is an effective method
to lengthen the lifetime of the OPC. In this work, A1N protective films were deposited onto OPC samples by rf reactive magnetron
sputtering with low substrate temperature. The A1N films were deposited with optimized sputtering conditions and exhibited
very high transmissivity in the visible wavelength range 300-800 nm. The films caused a remarkable increase in the hardness
of the OPC surface, by between 32 and 62%. The acceptance voltage, dark decay rate, photodischarge rate, difference between
the residual potential and the acceptance voltage of the OPC protected by A1N film were improved. These results show A1N is
a suitable protective film for OPC. 相似文献
102.
本文介绍了安徽省GSM网的网络结构和规模 ,对建设GSM90 0 /180 0双频网的组网方案、组网方案选择进行一些具体的分析。 相似文献
103.
研究了反悬浮法合成聚丙烯酸盐(PAAS)增稠剂过程中,N,N-亚甲基双丙烯酰胺(MBAA)用量对PAAS吸水、增稠和流变性的影响。发现随MBAA用量的增加,PAAS的吸水性呈先上升后下降的趋势,并当用量为单体质量的1‰时,PAAS的最大吸不倍率(Qm)、吸收0.9%氯化钠溶液分别高达1200、350、100g/g;PAAS水增稠体系的触变指数随MBAA用量的增加而提高:当用量为1‰、1.5‰时,P 相似文献
104.
.Net Framework推出的许多新技术(比如Web Service)为建立可维护、可扩展的站点,开发高效率、高伸缩性的应用程序提供了相对简单的解决方案。本文介绍如何利用这些技术结合SQL Server数据存储技术或Xml文档创建N层分布式应用程序、实现跨平台、跨Internet的应用集成。 相似文献
105.
106.
GaP:(N)的背景光谱和发光尖峰 总被引:1,自引:0,他引:1
获得高分辨GaP(N)光致发光光谱,观察到等电子陷陆束缚激子发光中LO和loc多声子发射,其强度分布答合泊松分布。将声子伴带区分为直接光跃迁和间接光跃迁,并进行了相应讨论,还观察到局域声子效应--光谱相似定律和相当显著的背景光谱。 相似文献
107.
ZHANG Qi-zhi LIAO Jian-xin ZHU Xiao-min State Key Laboratory of Networking Switching Beijing University of Posts Telecommunications Beijing P.R. China 《中国邮电高校学报(英文版)》2005,12(2)
1IntroductionIntelligent network,an affiliated network over com-munication network,is introduced for the quick provi-sion of newservices[1 ~2].In the structure of intelligentnetwork,a Service Control Point(SCP) serves a lot ofService Switch Point(SSPs)[3 ~4].It is a veryi mportanttopic that howto guarantee the Qos of SCP (e .g.thenumber of successfully processed calls per unit ti me)whenthe network becomes overloadedinthis centralizednetwork structure . There were many studies about the… 相似文献
108.
The temperature dependence of capacitance-voltage (C-V) and the conductance-voltage (G/w-V) characteristics of (Ni/Au)/Al0.3Ga0.7N/AlN/GaN heterostructures were investigated by considering the effect of series resistance (Rs) and interface states Nss in a wide temperature range (79-395 K). Our experimental results show that both Rs and Nss were found to be strongly functional with temperature and bias voltage. Therefore, they affect the (C-V) and (G/w-V) characteristics. The values of capacitance give two peaks at high temperatures, and a crossing at a certain bias voltage point (∼3.5 V). The first capacitance peaks are located in the forward bias region (∼0.1 V) at a low temperature. However, from 295 K the second capacitance peaks appear and then shift towards the reverse bias region that is located at ∼−4.5 V with increasing temperature. Such behavior, as demonstrated by these anomalous peaks, can be attributed to the thermal restructuring and reordering of the interface states. The capacitance (Cm) and conductance (G/w-V) values that were measured under both reverse and forward bias were corrected for the effect of series resistance in order to obtain the real diode capacitance and conductance. The density of Nss, depending on the temperature, was determined from the (C-V) and (G/w-V) data using the Hill-Coleman Method. 相似文献
109.
Michael Angell Guanzhou Zhu Meng‐Chang Lin Youmin Rong Hongjie Dai 《Advanced functional materials》2020,30(4)
The ionic liquid analog, formed through the mixture of urea and AlCl3, has previously shown to serve as a low‐cost electrolyte for an aluminum‐graphite battery, while maintaining good performance and achieving high Coulombic efficiency. Undesirable are the relatively high viscosity and low conductivity of this electrolyte, when compared to chloroaluminate ionic liquids with organic cations. In this work, the fundamental changes to the electrolyte resulting from using derivatives of urea (N‐methyl urea and N‐ethyl urea), again mixed with AlCl3, are examined. These electrolytes are shown to have significantly lower viscosities (η = 45, 67, and 133 cP when using N‐ethyl urea, N‐methyl urea, and urea, respectively, at 25 °C). The associated batteries exhibit higher intrinsic discharge voltages (2.04 and 2.08 V for N‐methyl urea and N‐ethyl urea electrolytes, respectively, vs 1.95 V for urea system@100 mA g?1 specific current for ≈5 mg cm?2 loading), due to changes in concentrations of ionic species. Aluminum deposition is directly observed to primarily occur through reduction of Al2Cl7? when AlCl3 is present in excess, in contrast to previously suggested cationic Al‐containing species, via operando Raman spectroscopy performed during cyclic voltammetry. 相似文献
110.
较详细阐述了有线电视双向网络光节点的设置,电缆干线网、用户分配网的设计等问题,最后介绍了回传调试的有关操作事宜。 相似文献