Light-Emitting Devices from Organic Semiconductors


LEDFOS - 8013

Work Area: Advanced Issues in Device Performance

Keywords conjugated polymers, molecular semiconductors, light-emitting diodes


Start Date: to be announced / Status: starting

[ participants / contact ]


Abstract LEDFOS aims to develop basic understanding of the chemistry, materials processing, physics and device engineering of light-emitting diodes based on polymeric organic semiconductors.


Aims

LEDFOS is a programme to develop the basic understanding of the chemistry, materials processing, physics and device engineering of light-emitting diodes based on polymeric organic semiconductors.

Approach and Methods

The development of polymer-based light-emitting diodes requires parallel and integrated programmes of synthetic chemistry, processing, characterisation theoretical modelling and device engineering in order to advance the underlying science to the stage at which it can underpin a technology.

The consortium brings together complemetary skills in the essential areas of this project: polymer synthesis (Cambridge and Philips); oligomer synthesis (Philips and Bologna); film processing, device fabrication and characterisation (Cambridge, Bologna, Philips); UHV spectroscopies (Linköping); theoretical modelling of materials and interfaces (Mons-Hainaut); fabrication of wave-guide structures (Cambridge, Philips).

Development of materials and methods for processing to form films will enable a wide range of single-layer and multilayer light-emitting diode structures to be fabricated. A wide range of measurements of both materials and of devices will be performed to characterise the physical processes that determine device performance.

Potential

Although electroluminescence in conjugated polymers was only recently discovered (1989), the potential for applications in a wide range of products is well established. Efficiencies and colour range suggest applications in many areas of display applications, and as integrated light sources in guided wave optical structures. Basic information on materials, processing, device structures arising from the programme will be ready for transfer to industrial development programmes.

Further information about LEDFOS is available from the LEDFOS home page <URL:http://www.phy.cam.ac.uk/www/research/ledfos/ledfos.html>.


Coordinator

The University of Cambridge - UK
Cavendish Laboratory,
Madingley Road
UK - CAMBRIDGE CB3OHE

Partners

Université de Mons-Hainaut - B
CNR-IMS, Bologna - I
Nederlandse Philips Bedrijven - NL
University of Linköping - S

CONTACT POINT

Dr. R.H. Friend
tel +44/223 337218
fax +44/223 350266


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LEDFOS - 8013, August 1994


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html version of synopsis by Nick Cook