Projects per year
Abstract
Exciton diffusion plays an important role in functional materials used
in organic optoelectronic devices, such as solar cells, organic light
emitting diodes, and lasers. Here we explore how exciton diffusion can
be controlled in highly fluorescent blue‐emitting polyfluorene materials
by changing the length and type of side chains. We find that the
exciton diffusion coefficient (D) decreases from 1.2 × 10−3 cm2 s−1 to 0.2×10−3 cm2 s−1 when the side chain length is increased from 8 to 12 carbon atoms. Other changes to the side chains led to enhancement of D up to 1.6 × 10−3 cm2 s−1.
Our results show that small adjustments to the molecular structure can
be helpful for the future development of high‐brightness organic light
emitting devices.
Original language | English |
---|---|
Article number | 1800500 |
Journal | Physica Status Solidi - Rapid Research Letters |
Volume | Early View |
Early online date | 12 Dec 2018 |
DOIs | |
Publication status | E-pub ahead of print - 12 Dec 2018 |
Keywords
- Exciton diffusion
- Fluorescence
- Light emitting polymers
- OLEDs
- Photophysics
Fingerprint
Dive into the research topics of 'Tuning the exciton diffusion coefficient of polyfluorene based semiconducting polymers'. Together they form a unique fingerprint.Projects
- 3 Finished
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Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale
Samuel, I. D. W. (PI)
1/10/13 → 30/09/23
Project: Standard
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ERC Advanced Grant EXCITON: EU FP7 ERC Advanced Grant 2012 EXCITON
Samuel, I. D. W. (PI)
1/04/13 → 30/03/19
Project: Standard
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EU FP7 'LAMP' Grant Agreement-247928: EU FP7 'LAMP' (FP7-ICT-2009-4)
Samuel, I. D. W. (PI)
1/06/10 → 31/05/13
Project: Standard
Datasets
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Tuning the exciton diffusion coefficient of polyfluorene based semiconducting polymers (dataset)
Sajjad, M. T. (Creator), Ward, A. (Creator), Ruseckas, A. (Creator), Bansal, A. K. (Creator), Allard, S. (Creator), Scherf, U. (Creator) & Samuel, I. D. W. (Creator), University of St Andrews, 17 Jan 2019
DOI: 10.17630/c6fa8480-c005-4d5a-bcd0-ae0d0b88b80c
Dataset
File