mathematical modelling of the refractive index and reflectivity of the quantum well solar cell
Báo cáo hóa học: " Impacts of Post-metallisation Processes on the Electrical and Photovoltaic Properties of Si Quantum Dot Solar Cells" potx
... as Rsh of the cell is in the order of MX.cm2 The short circuit current increases by a factor of three due to the decrease of Rs Contact and Sheet Resistances To identify the origin of the large ... regions as the annealing improves the contact of the Al shunts to both p- and n-regions of the cell thus shorting the cell more effectively To overcome this problem, the cell was immersed in 42.5% H3PO4 ... possible solutions include reduction of the barrier height and thickness of the quantum mechanical tunnelling barrier, modification of the composition of the cell s absorber material, improved Si...
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Báo cáo hóa học: " Improvement of performance of InAs quantum dot solar cell by inserting thin AlAs layers" doc
... for samples A and B The photo currents and open-circuit voltages of these samples with annealed QDs decrease The blueshift of the solar response spectra is probably due to the change of InAs composition, ... growth of the devices and COMcP carried out electronic characterization of the devices ETY and DMS conceived of the study, and participated in its design and coordination All authors read and approved ... C and D contain annealed QDs without and with AlAs capping, respectively In order to distinguish the difference of these four types of samples, they are summarized in Table The morphology of the...
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Báo cáo khoa học: Mathematical modelling of the urea cycle A numerical investigation into substrate channelling docx
... aspects of channelling and the effects of subcompartmentation of the cycle were not explored Hence, the aims of the current work were to: (a) extend this model in the widely available and readily ... amounts of unlabelled urea cycle intermediates were added to the cells, in order to assess the influence of these added substrates on the rate of urea synthesis Model Written in Mathematica, the basic ... Simulating the effect of the addition of mM unlabelled arginine on the distribution of radioactivity in cytoplasmic intermediates of the urea cycle As the pattern of distribution of radioactivity...
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Mathematical modeling and analysis of organic bulk heterojunction solar cells
... stability of organic solar cells, further research and development are needed in the theoretical understanding of device physics, the design and synthesis of new materials, the development of new ... Ncv is the e ective density of states for both electrons and holes, Vb is the built-in voltage of the cell, kB is the Boltzmann constant, and T is the temperature Since the exact values of the e ... donor/acceptor volume fractions The cross-sectional shape of the pillars, on the other hand, has no major in uence on the performance of this type of solar cells Based on these closed-form structure-property...
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Mathematical modelling of a suspension culture microenvironment
... detailed mathematical model further quantified the effects of geometry and the presence of other solutes on the tortuosity of the extracellular space The work categorized the effects into geometric and ... single cell seeding density of 10 cells/ml and 20000 cells/ml The number of neurospheres formed was counted at the end of days of culture The number of neurospheres formed at the end of culture ... lack of ECM anchorage [48, 49] The results of single -cell analysis experiments are defined retrospectively by the progeny of the plated cell and depends on the survival capacity of the isolated cell, ...
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Báo cáo hóa học: " Controllable synthesis of flake-like Al-doped ZnO nanostructures and its application in inverted organic solar cells" doc
... was the electrical conductivity, R was the tested value of resistivity, S was the area of the effective measuring electrode, and h was the thickness of the samples It is found that the s of AZO ... to the high s of the flake-like AZO nanostructures Previous works had reported the s of un-doped and Al-doped ZnO whiskers synthesized via hydrothermal method The conductivities of un-doped and ... method The effects of the electrical property and morphology characteristics of flake-like AZO nanostructures on the performance of the IOSC devices were investigated It is found that the PCE of the...
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báo cáo hóa học:" Preparation of TiO2 nanotube/nanoparticle composite particles and their applications in dye-sensitized solar cells" doc
... The IPCE peak height at 510 nm for the 10 wt.% TiO2/TNT cell is 53.3%, which is much higher than the values of 15.1% obtained for the 100 wt.% TNT cell and 37.2% for the cell without TNT Furthermore, ... SEM image of the TiO2 electrode film (Figure 3b) was also captured The top part is the TiO2 electrode film The middle one is the FTO layer, and the lowest one is the glass substrate The electrode ... easily inside the film, increasing the interfacial contact between the nanotubes, the dye, and the electrolyte In addition, a high level of dye adsorption on TiO2 in the form of nanorods and nanotubes...
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Fabrication and optimization of flexible dye sensitized solar cells
... dependent on the absorption range of the dye used as well as rate of recombination of the generated photoelectrons The integration of the IPCE spectrum gives the Jsc of the device The IPCE is often ... crystalline silicon solar cells Table 1.2 Comparison of various types of solar cells and their challenges[4, 30] acells with active area of at least cm2 Efficiency (%) Solar Cell Type Cella Challenges ... represents the energy loss to internal resistance of the cell iv Light to Power Conversion Efficiency (η) The efficiency of the cell is defined as the ratio of the measured output power (Pm) to the...
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Inkjet printing of conjugated polymer fullerene solar cell films
... Figure 1-12 and FF is the fill factor which defines the ideality of the solar cell towards the maximum potential power able to be generated by the solar cell Spectral mismatch calibration and correction ... group and the drop-on-demand (DOD) group In the history of inkjet printing (IJP), the continuous group is the predecessor of the DOD group in the graphics industry Both continuous and drop-on-demand ... without the unwavering support of my thesis advisors Prof Chua Soo Jin and Prof Peter Ho I also wish to thank Prof Sam Li for kindly agreeing to be the chair of my thesis advisory committee and providing...
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Advanced surface passivation of crystalline silicon for solar cell applications
... of the SiOx film The solid diamonds are the mean value of the corresponding solar cell parameter For the ease of comparison of the four graphs, the Y-axis of each graph was scaled such that the ... of c-Si solar cells Using simulations with the device simulator PC1D, the impact of reduced surface recombination on the efficiency of c-Si solar cells is demonstrated Finally, the state -of- the- art ... characteristic of the solar cell In addition to the loss mechanisms that limit the efficiency potential of a c-Si solar cell to approximately 29%, other losses which further decrease the efficiency...
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Study on charge separation and collection for stable mesoscopic sensitized solar cells
... the IS response of DSCs.[105, 125, 127] resistance of the substrate and CE, substrate and TiO2, transport resistance, and and and is the series stands for the interface impedance between is the ... shows the evolution of the photovoltaic characteristics of two cells upon aging, one containing the LI electrolyte and the other containing the TF electrolyte Due to the presence of M Li in the ... that most of the materials in DSCs are photoelectrochemically stable and assume the cell is well sealed, the ‐ 46 ‐ Chapter degradation of PCE and variation of , and FF must stem from the instability...
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Báo cáo khoa học: Kinetic hybrid models composed of mechanistic and simplified enzymatic rate laws – a promising method for speeding up the kinetic modelling of complex metabolic networks pptx
... bold) The heading designates the type of load parameter varied and the range of variation relative to the normal value of the reference state The last four columns show the percentage of the total ... sufciently well for changes of the external concentrations of glucose and lactate The reason is that the metabolism of this cell is controlled by the demand for energy and redox equivalents, and not ... excel In these calculations, the random variation of the concentrations of reactants preserved the conservation rules of the system, e.g constancy of the total concentration of adenine and pyridine...
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convective heat transfer mathematical and computational modelling of viscous fluids and porous media
... source of equilibrium disturbance due to the thermal interaction between the body and the fluid The reason for this process is that there are thermal interactions between the body and the medium The ... (~, ~) are the components of the fluid velocity along the (5, y)-axes, T is the fluid temperature, ~ is the pressure, kI is the thermal conductivity of the fluid and P r is the Prandtl number ... to the theory of hydrostatic equilibrium This leads to the process of the redistribution of the density which takes on the character of a continuous mutual substitution of fluid elements The...
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jj-thompson elements of the mathematical theory of electricity and magnetism
... while the negative will go to the most remote part of the system consisting of the metal of the the wire and the ground, i.e the negative be on the disc, electroscope, will go to the ground and the ... V" and the all E when the second conductor has the charge the other conductors are without charge then ; , and P all when the E conductor has the charge lt the second the charge and all the other ... linear dimension of either of the bodies, the repulsion between them is proportional to the product of their charges and inversely proportional to the square of the distance between them This law...
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báo cáo hóa học: " Telephone reliability of the Frenchay Activity Index and EQ-5D amongst older adults" pptx
... reliability study of the Barthel Index, the Rivermead Mobility Index, the Nottingham Extended Activities of Daily Living Scale and the Frenchay Activities Index in stroke patients Disability and rehabilitation ... and EQ-5D items the frequency of each possible response was computed to identify whether responses were distributed across the range of possible scores or whether they were at either end of the ... For 11 out of 15 items of the FAI, kappa was >0.80 and was between 0.60 and 0.80 for the remaining items Similarly kappa for each of the EQ-5D domain items were either between 0.60 and 0.80 (3/5)...
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báo cáo hóa học: " Relationship between the EQ-5D index and measures of clinical outcomes in selected studies of cardiovascular interventions" pot
... levels of CHD severity with sex, the scales of the SAQ and CCS angina severity class and a smaller relationship with age and ETT The variation seen in the relationship between the EQ-5D index and these ... sensitivity of the EQ-5D index at the upper end of the range will need to be kept in mind when studying patients early in the course of cardiac disease and patients post-treatment EQ-5D index and age The ... capacity and objective assessment of patients with diseases of the heart classification systems The table outlines the definitions of the different classification levels of the CCS and NYHA classifications...
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báo cáo hóa học:" Mapping of the Insomnia Severity Index and Other Sleep Measures to EuroQol EQ-5D Health State Utilities" ppt
... assumes that the EQ-5D covers all important aspects of the latent health construct that the ISI is intended to measure Hence, the strength of the mapping function is underpinned by the degree of overlap ... responsiveness of the estimates could not be assessed in the present study It is therefore unclear whether the mathematical links reported in this study would vary over time Fifth, the current study ... stronger impact on utility than others It was beyond the scope of the present analysis to capture a more detailed quantification of these effects Rather, an approximation of the EQ-5D utility values...
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Báo cáo lâm nghiệp: "Forest yield index and its applicability to the assessment of future forest yields" docx
... climate are the main sources of the final error In addition, the low presence of some tree species in the source data set negatively influenced the accuracy of the results Theoretically, the standard ... the current relative utilization of wood-production function of the forests Methodologically, the index is based upon mathematical models of forest growth (stand growth tables), proportions of ... on the meta-analysis of worldwide relevant and statistically well- founded published findings of the growth of 46 tree species in pure and mixed stands It was found that height growth rates of...
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Báo cáo khoa học: "Measurement and modelling of the photosynthetically active radiation transmitted in a canopy of maritime pine P Hassika" doc
... reflectance of the canopy and the understorey is presented in figure The increase in the canopy PAR reflectance at the beginning and at the end of the day is due to the interception of the top of the ... terms of the radiation balance in the PAR above and below the canopy for clear weather (day 193) as a function of the hour of the day The transmission of the incident PAR varies with the solar ... studied the relationship between the PAR and the solar radiation These studies tend to show that the ratio between the PAR and the solar radiation depends on solar elevation, sky conditions and dewpoint...
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Báo cáo khoa học: "The role of body mass index and diabetes in the development of acute organ failure and subsequent mortality in an observational cohor" doc
... investigators of the ARIC study and does not necessarily reflect the opinions or views of the ARIC study or the NHLBI The coauthors had full access to all of the data in the study and take responsibility ... of follow-up was used as the underlying time metric For deaths, the exit date was the date of death reported on the death certificate and, for survivors, the exit date was the date on which the ... designed the study, performed and interpreted the data analysis, and drafted the manuscript DED interpreted the data analysis and revised the manuscript All authors read and approved the final...
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