Empirical Model of the Charge Carriers’ Photogeneration in Organic Solar Cells

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Abstract

A model of the photocurrent generation of charge carriers in blends of donor (D) and acceptor (A)
materials structured on the nanoscale is considered. The absorption of a quantum of light in one of these
materials creates a molecular exciton, which can reach the interface between the D and A phases and form an
interfacial charge transfer (CT) exciton on this interface, which dissociates into an electron-hole pair. The
probabilities of the dissociation of CT excitons into free current carriers are calculated as a function of the
electric field and the thermalization length of the electron-hole pair.

About the authors

L. V. Lukin

Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences

Author for correspondence.
Email: leonid.v.lukin@gmail.com
Moscow, Russia

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