ENLIGHTEN - Enabling Organic Electronics by Design

Lead Research Organisation: University of Cambridge
Department Name: Physics


Current modelling software for organic electronic devices such as LEDs and photovoltaics typically uses models borrowed from conventional semiconductors, modified only by considering that the charge carrier mobility has a field dependence. Recently it has been appreciated that the presence of disorder in organic semiconductors means that the dependence of mobility on carrier density is just as important as the field dependence. Current models are therefore unable to provide a consistent description of device performance under different conditions based on a single set of parameters, and the microscopic parameters extracted from models are often misleading. In this project we aim to develop improved models that take into account disorder, not just for carrier transport but also for charge separation and injection. We will validate these models against experimental data, particularly temperature-dependent data, and will assist in transferring successful models into the easy-to-use software packages developed and used by other partners.


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Description We have implemented new numerical models to describe the behaviour of polymer electronic devices, including light-emitting diodes, solar cells and transistors. We have particularly focused on the effects of charge density on carrier mobility.
Exploitation Route Our fundamental expertise in charge transport has been used by the industrial partners in this collaborative project.
Sectors Electronics,Energy

Description Our work has been implemented to improve a commercial device modelling software package produced by one of the industrial partners in the project.
First Year Of Impact 2012
Sector Electronics,Energy
Impact Types Economic