Optical and electrical studies of silicon nanowires in photovoltaic applications
Optical spectroscopy of silicon nanowires
... shows the Raman scattering spectra of the SiNWs and crystal silicon A very sharp and Fig A typical SEM image of the morphology of aligned silicon nanowires of uniform diameter distribution on ... linewidth of crystalline silicon, and D is the size of crystal Eq (1) was used to fit the Raman spectra The continuous line in Fig shows the best-fit result, and the average crystal...
Temperature dependence of morphology and diameter of silicon nanowires synthesized by laser ablation
... the temperature dependence of the morphology of SiNWs synthesized by laser ablation In this Letter, we present the results on this project Our results show that the morphology and diameter of ... B, the temperature dependence of the morphology and diameter of the SiNWs is similar to that by thermal evaporation, reported recently by Peng et al [14] I...
A study in the growth mechanism of silicon nanowires with or without metal catalyst
... Metal- assisted growth of SiNWs A basic aspect of the VLS mechanism is the metal particle acting as a catalyst for the anisotropic growth of SiNW with a crystalline structure A catalyst particle ... substrate (Fig 2B a) , a liquid metal Si alloy will be formed With more and more Si atoms added, the Si content in the If the growth with a...
Synthesis and characterization of silicon nanowires using tin catalyst for solar cells application
... characteristics of the fabricated SiNWs solar cell under dark and light conditions the thickness of Si base substrate more thinly For improvement of conversion efficiency of the SiNWs solar cells, the ... performance Therefore, further reduction of the reflectance will be expected from the optimization of the synthesis conditions of SiNWs For analysis of the electri...
Investigation of au and in as solvents for the growth of silicon nanowires on si(1 1 1)
... insertion of the sample into the UHV chamber in spite of the preceding HF-dip There are hints in the literature [11 ] that deposition of gold onto a thin layer of SiO2 on Si (1 1) favors the decomposition ... melting point (15 7 1C) [13 ] As the surface tension of most liquids decreases in a nearly linear fashion with increasing temperature [14 ], there is...
Molecular dynamics simulations of the tensile and melting behaviours of silicon nanowires
... atoms near the surface, as compared with those in the bulk, and the increasing dominance of the surface would decrease the strength of the structure 3.2 The melting properties of the SiNWs The variation ... materials [36] The change of the melting temperature of nanostructures depends on their surface This indicates that the unstable surface of free-s...
Báo cáo toán học: " Structural, optical and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles" docx
... Structural, optical, and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles Yao-Ming Hao1, Shi-Yun ... study, a series of manganese [Mn]-doped zinc oxide [ZnO] hierarchical microspheres [HMSs] are prepared by hydrothermal method only using zinc acetate and manganese acetate as precursors and e...
báo cáo hóa học:" Structural, optical and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles" docx
... Structural, optical, and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles Yao-Ming Hao1, Shi-Yun ... study, a series of manganese [Mn]-doped zinc oxide [ZnO] hierarchical microspheres [HMSs] are prepared by hydrothermal method only using zinc acetate and manganese acetate as precursors and e...
Báo cáo vật lý: "Volumetric and Thermodynamic Studies of Molecular Interactions in Ternary Liquid Mixtures at 303, 308 and 313K" pptx
... Volumetric and Thermodynamic Studies 98 liquid mixtures of weakly7 or strongly interacting components.8 The study of molecular associations in organic ternary mixtures having an alcohol as ... measurements at 303, 308 and 313K The main purpose of this study is to characterize the molecular interactions in these systems and subsequently to determine the...
Báo cáo y học: "Systematic review and meta-analysis of randomised trials and cohort studies of mycophenolate mofetil in lupus nephritis" pdf
... distribution was not In randomised trials and cohort studies, whites were in a minority; in cohorts of SLE patients, they were in the majority Even in randomised trials and cohorts with lupus nephritis, ... occurred in 66% of patients in randomised trials and in 80% in cohorts, a similar proportion given the relatively small numbers Mortality with...
Báo cáo khoa học: "Clinical review: The implications of experimental and clinical studies of recruitment maneuvers in acute lung injury" pptx
... demonstrated that RMs can increase oxygenation and lung volume in collapsed prone lungs However, the benefits of RMs in terms of oxygenation and lung recruitment in ARDS patients and in experimental models ... inflection point was more effective in maintaining gas exchange and minimizing inflammation and lung injury than was PEEP set at the maximum curvat...
MOLECULAR AND PHYSIOLOGICAL STUDIES OF SALT TOLERANCE IN THE SALT SECRETOR MANGROVE AVICENNIA OFFICINALIS
... secretion and therefore the salt tolerance mechanism in the mangrove Avicennia officinalis These results validate the previous findings that aquaporins play a critical role in salt secretion and water ... physiological and molecular aspects of salt tolerance in A officinalis The notable contributions of this study include confirmation of the r...
High-Surface-Area Catalyst Design- Synthesis, Characterization, and Reaction Studies of Platinum Nanoparticles in Mesoporous SBA-15 Silica
... nm, and (e) 7.1 nm 3.2 Synthesis and Characterization of Pt /SBA-15 Catalysts 3.2.1 Incorporation of the Pt Particles in SBA-15 Structure SBA-15 with a pore diameter of 9.0 nm was used as a catalyst ... the conditions of catalyst synthesis The minimal change in SBA-15 physical parameters after incorporation of Pt into the silica reveals that there is no signific...
Optical and electrical studies of silicon nanowires in photovoltaic applications
... development and prominent properties are presented briefly in Chapter 1.2 Integration of silicon nanowires into PV devices There has been increasing research interests in deploying nanostructures, silicon ... highlighting the advantages and promising prospect of SiNWs in the design and fabrication of third generation solar cells In previous works, SiNWs were fabricat...
Integration of silicon nanowires in MOS technology
... theoretical study of the effect of interface states on nanowires Integration of Silicon nanowires MOS technology II Julien POIZAT 2004 Death of CMOS Technology: II.1 Miniaturization: Progress of micro-electronics, ... is the SOI technology (Silicon On Insulator) It is compatible to CMOS technology It consists of building a transistor over a thin Silicon layer 1...
Từ khóa: