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Characterization of an erasable organometallic optical storage medium

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Abstract

We recently reported optical and optoelectronic switching between two states in polycrystalline organometallic semiconductor films1–4 using the 488.0- and 457.9-nm lines of an argon-ion laser. Although the optical measurements have largely concerned films of copper or silver complexed with the electronic acceptor tetracyanoquinodimethane (TCNQ), results in substituted acceptors indicate similar effects. It has been postulated that the effect of the applied optical field on the initial charge-transfer salt (e.g., AgTCNQ) is to induce a phase transition resulting in the formation of a nonstoichiometric complex salt containing neutral TCNQ: [Ag+TCNQ¯]nEΔAgx0+[Ag+TCNQ¯]n1+(TCNQ0)x (1)

© 1986 Optical Society of America

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