TY - JOUR
T1 - Theory of photoinduced charge separation in solids
AU - Mikhelashvili, M. S.
AU - Agam, Oded
PY - 2005/8
Y1 - 2005/8
N2 - We discuss photoinduced ionization and charge separation kinetics in solutions as a way to conserve and utilize light energy. Our interest is in the secret of the high efficiency of reaction centers and the fast and irreversible separation of ions involved in reduction and oxidation reactions in the macromolecule. We present a new theory of reversible charge transfer, which shows high efficiency of charge separation: the charge's recombination has a weak influence on the donor cation-state probability's maximum value but a large effect on its long-time behavior. We give the comparison of new results with recently published ones on charge separation kinetics in condensed media. We use the methods of independent reaction "vessels" and "conditional concentrations". The influence of back charge transfer is essential for long-time tail of the cation-state probability; its action on the cation-state probability's maximum value grows weak with an increase of forward rate constants and acceptor's concentration.
AB - We discuss photoinduced ionization and charge separation kinetics in solutions as a way to conserve and utilize light energy. Our interest is in the secret of the high efficiency of reaction centers and the fast and irreversible separation of ions involved in reduction and oxidation reactions in the macromolecule. We present a new theory of reversible charge transfer, which shows high efficiency of charge separation: the charge's recombination has a weak influence on the donor cation-state probability's maximum value but a large effect on its long-time behavior. We give the comparison of new results with recently published ones on charge separation kinetics in condensed media. We use the methods of independent reaction "vessels" and "conditional concentrations". The influence of back charge transfer is essential for long-time tail of the cation-state probability; its action on the cation-state probability's maximum value grows weak with an increase of forward rate constants and acceptor's concentration.
KW - Cation-state probability
KW - New account of electron back transfer
KW - Reversible electron transfer
KW - Space averaging procedure
UR - http://www.scopus.com/inward/record.url?scp=21844480943&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2004.11.013
DO - 10.1016/j.jlumin.2004.11.013
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AN - SCOPUS:21844480943
SN - 0022-2313
VL - 114
SP - 145
EP - 154
JO - Journal of Luminescence
JF - Journal of Luminescence
IS - 2
ER -