ENLIGHTEN - Enabling Organic Electronics by Design
Lead Research Organisation:
University of Cambridge
Department Name: Physics
Abstract
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.
Organisations
People |
ORCID iD |
Neil Greenham (Principal Investigator) |
Publications
Li Z
(2013)
Voltage-dependent photocurrent transients of PTB7:PC70BM solar cells: Experiment and numerical simulation
in Journal of Applied Physics
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 |