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A few-monolayer organic photodiode

✍ Scribed by A. S. Martin; C. R. Lawrence; J. R. Sambles

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
779 KB
Volume
7
Category
Article
ISSN
1616-301X

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✦ Synopsis

A few-monolayer zwitterionic, non-centrosymmetric Langmuir-Blodgett film has been sandwiched between two electrodes, one of which is transparent. Curves of dark current density as a function of applied bias were observed to exhibit rectifier-like behaviour and to follow closely the dependences measured from junctions using two metallic electrodes. The transparent indium tin oxide (ITO) electrode discussed here permitted illumination of the organic film during electrical characterisation and it was observed that the electrical behaviour was altered from the dark state. Illumination has the effect of generating a photocurrent even when no bias is applied to the electrodes; in addition, the junction conductance was increased.

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