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4篇 您的检索式:作者名="FENG ShiMeng"
    题名 作者 年代 出处 被引量
1Experiment study on micro-structure on different crystallographic planes of mc-Si etched in alkaline solution显示文摘The investigation of multi-crystalline silicon(mc-Si) surface etching technology is a key point in solar cell research.In this paper,mc-Si surface was etched in the common alkaline solution modified by an additive for 20 minutes at 78-80°C.Samples' surface morphology was observed by scanning electron microscope(SEM).It is firstly found that the etched mc-Si surface has the uniform distribution of trap pits although the morphologies of trap pits are slightly different on different crystallographic planes.Si(100) plane was covered with many small Si-mountain ranges or long V-shape channels arranged in a crisscross pattern.For(110) plane and(111) plane,they were full of a lot of triangle pit-traps(or quadrilateral holes) and twisted earthworm trap pits,respectively.The measured reflectance of the sample was 20.5% at wavelength range of 400-900 nm.These results illustrate that alkaline solution modified by an additive can effectively etch out trap pits with a good trapping light effect on mc-Si surfaces.This method should be very valuable for mc-Si solar cells.WANG KunXia FENG ShiMeng XU HuaTian TIAN JiaTong YANG ShuQuan HUANG JianHua PEI Jun 2012Science China(Technological Sciences)2012,55,6:1
2Recent progress on the hydrogen storage properties of ZrCo-based alloys applied in International Thermonuclear Experimental Reactor(ITER)显示文摘Under the development of International Thermonuclear Experimental Reactor(ITER) system aimed at realizing the controllable fusion reaction to solve the energy crisis fundamentally, there is an urgent need to find an appropriate material for tritium handling. ZrCo alloy is considered to be a promising candidate for the storage and delivery of hydrogen isotopes due to the favorable characteristics such as low plateau pressure for absorption, high dissociation pressure at moderate temperature and better ability of trapping ~3He. However, the hydrogen induced disproportionation and the slower recovery/deliverty rate of ZrCo-based alloys have limited their further application in ITER system. This review summarizes the efforts towards enhancing the hydrogen storage properties of ZrCo-based alloys including element substitution, surface modification, disproportionation mechanism investigation and the isotope effect study. Element substitution and surface modification play positive role to improve the anti-disproportionation ability and kinetic property of the alloys. However, the ZrCo-based alloys require to be further modified by more attempts such as new composition, novelty modification method or catalyst addition in order to better satisfy the application demands for tritium handling. Moreover, new insight for further understanding the inner disproportionation mechanisms of this material is needed by combining the advance characterization and theoretical analysis, which is in favor of addressing the disproportionation problem of the ZrCo-based alloys essentially.Feng Wang Rongfeng Li Cuiping Ding Wukui Tang Yibo Wang Shimeng Xu Ronghai Yu Ying Wu 2017Progress in Natural Science:Materials International2017,27,1:1
3The correlation of the energy resolution of incidence light with measured reflectance of multilayers显示文摘Feng Shimeng Zhao Haiying Huang Meizhen 2003Science in China (G)2003,33,3:1
4Self-consistent method for calculation of reflection coefficients of the interface with the dielectric tensor's rotation显示文摘We give an interface between two same media whose orientation of optical axis, however, is rotated, and describe a method in detail to show how to calculate reflectance coefficient in this interface. We also give the theoretical simulation of the reflectance coefficient and discuss the effect of the rotation angle and the direction of electron vector on the reflectance coefficient. For the un-polarized lights the theoretical calculated results show that the reflectance coefficients (rx1 and ry1) are very small when the rotated angle is small, and they arrive at the maximum value as the rotation angle is equal to a decided value. For the polarized light, when the rotation angle is small, the reflectance coefficients (rx1 and ry1) are also small. Only when the rotation angle increases to a certain extent, they can reach the maximum values and be strongly affected by the direction of electronic vector. However, this effect on the reflectance coefficient in the direction of the maximum refraction is different from that in the direction of minimum refraction.FENG ShiMeng CHEN Ting XIE JiaNing 2008Science China(Physics,Mechanics & Astronomy)2008,51,7:0
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