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The space charge layer within semiconductor particles

2 The space charge layer within semiconductor particles [Pg.297]

These two effects will occur if the semiconductor is under conditions of open circuit. Further variation in the charge stored within the space charge layer may occur if [Pg.297]

The potential distribution, and hence the extent of the band bending, within the space charge layer of a planar macroscopic electrode may be obtained by solution of the one-dimensional Poisson-Boltzmann equation [95]. However, since the particles may be assumed to have spherical geometry, the Poisson-Boltzmann for a sphere must be solved. This has been done by Albery and Bartlett [131] in a treatment that was recently extended by Liver and Nitzan [125]. For an n-type semiconductor particle of radius r0, the Poisson-Boltzmann equation for the case of spherical symmetry takes the form  [Pg.300]

Integration of equation (9.16) using the boundary conditions that = f w and (d f ldr) = 0 at r = (r0 - w), where tv = the width of the space charge layer, yields  [Pg.301]




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