Electron-ion geminate escape probability in anisotropic media
β Scribed by A. Mozumder; S.M. Pimblott; P. Clifford; N.J.B. Green
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 366 KB
- Volume
- 142
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The diffusion-controlled electron-hole geminate escape probability in anisotropic media has been calculated by numerical solution of the adjoint equation for that probability after a series of simplifying transformations. Relative to the crystalline axes the anisotropies of both dielectric constant and mobility, which generally have different principal directions, are important. The escape probability depends on the magnitude and direction of the initial electron-hole separation. Applied to anthracene the implied experimental escape probability ~0.01 is attained at initial separations 4.0, 4.0 and 3.2 nm along the a, b, c' crystal directions respectively
π SIMILAR VOLUMES
Several deficiencies in the title paper are noted and discussed. The most important inconsistency is the assumption of an anisotropic diffusion tensor together with an isotropic dielectric constant.
A Monte Carlo random flights technique is presented for simulating ion-pair recombination kinetics in systems with ditfitsional and dielectric anisotropy, and is applied to geminate electron-hole recombination in anthracene and naphthalene. While the importance of the anisotropy is evident in the de
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