Time‐of‐Flight Determinations of Electron Diffusion Coefficients and Electron Drift Velocities in Ethylene, Water Vapor, and in Hydrogen

1966 ◽  
Vol 45 (1) ◽  
pp. 282-295 ◽  
Author(s):  
G. S. Hurst ◽  
J. E. Parks
Keyword(s):  
Water Vapor ◽  
Diffusion Coefficients ◽  
Time Of Flight ◽  
Electron Drift ◽  
Electron Diffusion

scholarly journals Townsend Discharges in Transverse Magnetic Fields

1983 ◽  
Vol 36 (6) ◽  
pp. 859 ◽  
Author(s):  
HA Blevin ◽  
MJ Brennan
Keyword(s):  
Magnetic Field ◽  
Steady State ◽  
Magnetic Fields ◽  
Drift Velocity ◽  
Transverse Magnetic Field ◽  
Electron Concentration ◽  
Diffusion Coefficients ◽  
Concentration Distribution ◽  
Transverse Magnetic ◽  
Electron Drift

Expressions are derived for the electron concentration in Townsend discharges in the presence of a transverse magnetic field for both steady state and pulsed conditions. These results indicate that the two components of the electron drift velocity and the four diffusion coefficients required to describe the concentration distribution can be determined by observation of photons emitted from the discharge.

Improvements in the measurement of electron diffusion coefficients by the light chamber technique

1965 ◽  
Vol 40 (2) ◽  
pp. 450-453 ◽  
Author(s):  
G. Cavalleri ◽  
E. Gatti ◽  
A. M. Interlenghi
Keyword(s):  
Diffusion Coefficients ◽  
Electron Diffusion ◽  
Chamber Technique

Electron Transport and Recombination in TiO2 Nanofiber Dye Sensitized Solar Cell

2011 ◽  
Author(s):  
Jinwei Li ◽  
Yong Shi
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Electron Transport ◽  
Diffusion Coefficients ◽  
Solar Spectrum ◽  
Electron Diffusion ◽  
Promising Alternative ◽  
Tio2 Nanofibers ◽  
Dye Sensitized ◽  
Tio2 Nanofiber

Dye sensitized solar cells (DSSCs), a new type of photo-electrochemical solar cells, are a promising alternative to the silicon based photovoltaic because they hold advantages of low cost, simple manufacturing processes and higher conversion efficiency compared with other types of excitonic solar cell. DSSCs with conversion efficiencies of up to 11% have been achieved with a highly stable electrolyte under AM1.5G conditions. Recently, one dimensional (1D) electrospun TiO2 nanofibers have been used as the DSSC photoanode to improve the electron transport efficiency and enhance the light harvest efficiency by scattering more light in the red part of the solar spectrum. In this paper, stepped light induced transient measurement of photocurrent and voltage (SLIM-PCV) has been employed to study electron transport and recombination in DSSCs. Electron diffusion coefficients and electron lifetimes were measured with differing light intensities. The electron diffusion coefficients and electron lifetimes strong correlate with intensity, which indicates the trap limited diffusion process for electrons in the TiO2 nanofiber DSSC.

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