Photoconduction in Langmuir-Blodgett films of octasubstituted metal-free phthalocyanine molecules

RAY, A. K., NABOK, A. V., HASSAN, A. K. and COOK, M. J. (1999). Photoconduction in Langmuir-Blodgett films of octasubstituted metal-free phthalocyanine molecules. IEE proceedings. Circuits, devices and systems, 146 (1), 44-48.

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Link to published version:: 10.1049/ip-cds:19990268

Abstract

In-plane steady-state photoconduction in Langmuir-Blodgett (LB) films of octasubstituted metal-free phthalocyanine molecules have been studied over a temperature range between 78 and 293K. Deep-level traps localised at grain boundaries of multicrystalline films are believed to be responsible for both dark conduction and photoconduction. Slow and fast relaxation mechanisms are identified from measurements of transient currents. Small changes of substituting chains in the molecule are found to have significant influences on rate and quantum yield of photogeneration of charge carriers in LB films.

Item Type: Article
Research Institute, Centre or Group: Materials and Engineering Research Institute > Thin Films Research Centre > Electronic Materials and Sensors Research Group
Identification Number: 10.1049/ip-cds:19990268
Depositing User: Ann Betterton
Date Deposited: 30 Mar 2010 17:22
Last Modified: 30 Mar 2010 17:22
URI: http://shura.shu.ac.uk/id/eprint/1449

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