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31.
Three photoconductive diamond detectors with highly oriented diamond (HOD) films fabricated by the same process were characterized with respect to temporal response, spectral responsivity and its spatial uniformity over the wavelength range from 190 to 250 nm. Temporal measurements showed a drift in the baseline, suggesting the presence of deep level carrier traps. The responsivity of specimen No. 2 was more than twice those of the other two specimens, but it showed an unpredictable current fluctuation. It was found that the spatial uniformities of all the specimens were too low for radiometric purposes. A prominent peak, thought to be due to photoemission, was found in the responsivity spatial distribution of specimen No. 3 under a negative applied voltage. 相似文献
32.
Schottky diodes were built on different polycrystalline diamond films grown by Microwave Plasma and Hot Filament Chemical Vapor Deposition and their electrical properties were studied. The barrier height increased with the diamond film quality and the corresponding ideality factor decreased. Even though the lower-quality HFCVD film displayed poor rectifying properties, it was found to be much less sensitive to variations in the operating conditions (air vs. vacuum). The activation energies of the films depend on morphological parameters, as preferable grain size or orientation. The bulk conduction also depends on the quality of the deposited films, changing from ohmic to trap-free or shallow trap SCLC and SCLC with an exponential distribution of traps. The hypothesis of using the electrical measurements as an indicator for film quality has been discussed. 相似文献
33.
无氢类金刚石碳膜的研究进展 总被引:1,自引:0,他引:1
介绍了无氢类金刚石碳膜的制备方法 ,它们的机械、光学、电学性能 ,将无氢与含氢的类金刚石碳膜进行了简单比较 ,总结及探讨了它们的应用 相似文献
34.
Shi-Woo Rhee 《Korean Journal of Chemical Engineering》1995,12(1):1-11
Aluminum has been used widely as a conducting material in the fabrication of integrated circuits, and chemical vapor deposition
process for Al has been actively investigated for the application in ultra large scale integration. In this review, various
precursors, mainly alkyl aluminum and alane compounds, and reaction mechanisms of these precursors in Al CVI) are described.
Epitaxial growth and selectivity of the deposition are also discussed. In addition to thermal reactions, plasma and photochemical
reactions are also briefly described. 相似文献
35.
PDC钻头在胜利油田深井钻井中的应用 总被引:5,自引:2,他引:3
胜利油田为提高深井钻井速度,试验应用了PDC钻头,结果表明,深井钻井应用PDC钻头可大幅度提高机械钻速,缩短建井周期,降低钻井成本,经济效益明显。通过大量的现场试验,扩大了PDC钻头在胜利油田的使用范围,并取得很好的效果,初步形成了PDC钻头推广应用区域模式。详细介绍了胜利油田不适用PDC钻头钻进的地层岩性,给出了钻头选型及钻井参数选择原则,并对应用效果进行了分析。 相似文献
36.
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38.
Journal of Electronic Materials - Low pressure chemical vapor deposition (LPCVD) of tungsten (W) by SiH4 reduction of WF6 on Si(100) surfaces was studied in a single-wafer, cold-wall reactor over a... 相似文献
39.
利用射频化学气相沉积法,通过硼的掺杂,在石英玻璃衬底上生长出P型微晶金刚石薄膜,范德堡法的测试表明,我们得到的薄膜最小电阻率为4×10-2Ω.cm,最大空穴迁移率为50cm/V.s;从电阻率与温度关系近似计算出杂质激活能 相似文献
40.
F. La Via G. Galvagno F. Giannazzo A. Ruggiero L. Calcagno M. Mauceri G. Pistone G. Abbondanza A. Veneroni L. Zamolo G.L. Valente 《Microelectronic Engineering》2006,83(1):48-50
The results of a new epitaxial process using an industrial 6 × 2″ wafer reactor with the introduction of HCl during the growth have been reported. A complete reduction of silicon nucleation in the gas phase has been observed even for high silicon dilution parameters (Si/H2 > 0.05%) and an increase of the growth rate until about 20 μm/h has been measured. Photoluminescence at room temperature and at 50 K was used for defects quantification and distribution. On these wafers grown using HCl high voltage Schottky diodes have been realized. The diodes were analyzed by current-voltage (I-V) characteristics. 相似文献