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Photo-induced Unidirectional Electron Transfer in a Porphyrin Heterojunction by Tom J. Savenije; Rob B.M. Koehorst; Tjeerd J. Schaafsma is a Physics and Astronomy article available to read on EtoBox.

What is Photo-induced Unidirectional Electron Transfer in a Porphyrin Heterojunction about?

Organic heterojunctions made by deposition of two different types of porphyrins onto an ITO substrate by electro-polymerisation and spin-coating exhibit rectification upon illumination. The redoxpotentials for the various porphyrin D/A combinations can be varied by using different porphyrin metal centers. Different exothermicities for photo-induced electron-transfer in this way results in different values of the short circuit current. Depending on layer thickness and type of porphyrins, the open circuit voltage is ~< -0.4 V and the incident photon to current efficiency is 2.5% at 440 nm. Possible mechanisms for the observed rectification are discussed.

Who reads Photo-induced Unidirectional Electron Transfer in a Porphyrin Heterojunction?

Author

Tom J. Savenije; Rob B.M. Koehorst; Tjeerd J. Schaafsma

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0009-2614)

Published

1995

Language

EN

Field

Physics and Astronomy (Physical Sciences)