Diffusion length
Exciton diffusion length and charge extraction yield in organic bilayer solar cells
... fluorescent materials. A key advantage of our photovoltaic approach is the simultaneous quantitative access to both the exciton diffusion length and the yield of charge extraction. To account for potential ...
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Estimation and calibration of the water isotope differential diffusion length in ice core records
... After applying this gap-filling procedure, the two meth- ods for determining the differential diffusion length can be applied. One of the first steps in the PSD method is to de- termine the noise level that ...
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Improvement of carrier diffusion length in silicon nanowire arrays using atomic layer deposition
... SiNW arrays, the diffusion length was estimated to be 5.76 μm, suggesting that passivation effect was not enough to collect minority carriers since there are defects still remaining. After annealing, the ...
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Engineered exciton diffusion length enhances device efficiency in small molecule photovoltaics
... exciton diffusion length. Developing a way of increasing exciton diffusion length would overcome this trade-off by enabling efficient light harvesting from large ...exciton diffusion ...
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Investigation of Positron Annihilation Diffusion Length in Gallium Nitride
... positron diffusion length is measured in solids by implanting low energy positrons at various depths and ob- serving the fraction which diffuses back to the entrance ...fit diffusion model to S and W ...
5
Minority Carriers’ Diffusion Length Determination In Thin Films Cuinse2 Solar Cells Electrodeposited On Flexible Substrate In Kapton
... We characterized thin film solar cell based on CuInSe2 electrodeposited on a flexible substrate in Kapton. The characterization by MEB and XRD confirm good morphological and structural properties of thin films. The ...
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Recombination Parameters Measurement of Silicon Solar Cell Under Constant White Bias Light With Inci
... The table below shows the results obtained from the experimental set up for an automatic characterization of the solar cell under several incident angle values. This table shows for each value of θ, the density of short ...
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Investigation and Control of "Sphere-Like" Buckminsterfullerene C60 and "Disk-Like" Copper(II) Phthalocyanine.
... the fill factor of the device. The (112̅) orientation, however, does not have gaps on these scales and has an advantageous surface roughness on the size scale of the exciton diffusion length. The epitaxial ...
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Influence of Different Metals Back Surface Field on BSF Silicon Solar Cell Performance Deposited by Thermal Evaporation Method
... The characterization of the individual samples were performed by K3100EQX Spectral IPCE Measurement System, from which the external quantum efficiency (EQE) was measured by incident photon-to-current efficiency (IPCE) ...
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A detailed study of p n junction solar cells by means of collection efficiency
... The analysis of solar cell performance in terms of material and microscopic device parameters is the key to understanding device performance and efficiency. In general, two principal sets of electrical characteristics are ...
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Investigations on Structural and Optical parameters of ZnO Dye-sensitized solar Cell
... as diffusion length and photo electrode thickness and the role of MgO ARC of ZnO based N719 DSSC are ...the diffusion length and photo anode thickness are essential and interrelated parameters ...
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Dilute nitride and GaAs n i p i solar cells
... in diffusion lengths of less than ...hence, diffusion length are attributed to the incorporation of N in the GaInAs, which results in shallow recombination centres in the middle of the bandgap ...
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Synthesis of long group IV semiconductor nanowires by molecular beam epitaxy
... the diffusion of ada- toms that adsorb directly onto the NW sidewalls or on the seed ...same length growth rate. The effect of a limited diffusion length is readily visible in Figure ...in ...
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s41467-019-12513-x.pdf
... electron diffusion length is the main limitation factor in realizing a highly efficient Sn-based NBG ...electron diffusion length is effectively enhanced by three times to ...
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Exciton Energy Transfer in Hybrid Organics—Semiconductor Nanostructure
... the diffusion length on temperature leads to the possibility of indirect pumping II-VI QW via energy transfer from the tetracene layer in the hybrid nanostructure of Figure ...the diffusion ...
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Intersubband carrier scattering in n - and p-Si SiGe quantum wells with diffuse interfaces
... perature. Rates are shown for electron–electron (E E), in- travalley acoustic phonon (AC), interface roughness (IFR), ionized impurity (ION), g-type phonon emission, and alloy disorder (ADO) processes. ADO is strongly ...
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Formation of plasmonic nanoparticle arrays rules and recipes for an ordered growth
... have demonstrated general trends that increasing diffusion length leads to more ordered, spherical and larger nanopar- ticles. By comparing growth on different substrates we have demonstrated the general ...
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Characterisation of organic materials for photovoltaic devices
... dition of a charge will force the molecule to reduce its energy. This is done by pushing the defect to the end of the molecule, taking the cha- rge with it. From here the possibility of charge hopping is presented. Since ...
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Kinetics of growth of nanowhiskers (nanowires and nanotubes)
... The deformation stress energy in the core of screw dislo- cation is reason for the formation of hollow in nanotubes. The hollow is formed when the magnitude of the Burgers vector exceeds a critical value. Extremely short ...
5
Reaction infiltration instability in a compacting porous medium
... occur (the darker shaded region). At slower reaction rate R (units s −1 ), the instability may not occur (the lighter shaded region). The diamond marker indicates the transition from advection to diffusion ...
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