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Our
dedicated clean room for the fabrication of organic devices was
funded by a grant from the Wolfson Foundation. The basic clean room
is class 10,000 and houses a general working area for device preparation
and an Edwards 306 automatic metal evaporator.
For
the critical process of thin film spinning we have one spinner located
in a class 100 chemi-wet station. This very clean area is used for
all solution handling as well as spinning to minimise particulate
contamination of both solutions and films before they dry.
We
also have our large glove box housed within the clean room. A new
metal evaporator (with turbo pump) has recently been built into
the glove box. A second spinner is also kept in the glove box so
that we can fabricate polymer LEDs completely in the glove box environment.
A
current research project is looking into the differences in device
performance between devices made in the glove box and those made
in the open clean room. We hope shortly to add another evaporator
so that we can deposit non-metallic layers to aid our studies into
the origins of photoconductivity in polymer films.
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