Generation of Hot Free Electrons Due to the Interaction between Charge‐Transfer Excitons and Thermalized Free Electrons in Molecular Crystals

The interaction of a free, thermalized electron with a CT exciton (nearest-neighbor hole–electron pair) in an anthracene crystal is discussed theoretically. The rate constant for the annihilation of the CT exciton by the electron, in which an Auger electron is produced in a plane-wave crystal state by the decay of an intermediate excitonic ion state is estimated to be about 10−10 to 10−9 cm3 S−1. Es wird die Wechselwirkung eines freien, thermalisierten Elektrons mit einem CT-Exziton (Elektron–Loch-Paar nachster Nachbarn) in einem Anthrazenkristall theoretisch untersucht. Die Ratenkonstante der Annihilation des CT-Exzitons durch das Elektron, bei der ein Augerelektron in einem Kristallzustand ebener Wellen durch den Zerfall eines Exzitonen-Zwischenzustands erzeugt wird, wird zu etwa 10−10 bis 10−9 cm3 S−1 berechnet.

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