Projects per year
Abstract
We show that the emission efficiency of blue-green phosphorescent
emitters can be controlled through coupling of the excited state to
vibrational modes. We controlled this vibrational coupling through
choice of different ligands and as a result, complexes with CF3-groups on the ancillary ligand were essentially non-emissive (ΦPL < 1%), whereas with isosteric CH3-groups the complexes were strongly emissive (ΦPL > 50%). Emission of the complexes can be drastically improved (30 times higher ΦPL compared to degassed solution for the CF3-containing
complexes) by blending them with an inert solid host such as PMMA,
which mitigates metal-ligand vibrations. Solution-processed organic
light-emitting diodes made from these materials showed efficiency as
high as 6.3%.
Original language | English |
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Pages (from-to) | 8939-8946 |
Number of pages | 8 |
Journal | Journal of Materials Chemistry |
Volume | 4 |
Issue number | 38 |
Early online date | 30 Aug 2016 |
DOIs | |
Publication status | Published - 14 Oct 2016 |
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Dive into the research topics of 'Controlling the emission efficiency of blue-green iridium(III) phosphorescent emitters and applications in solution-processed organic light-emitting diodes'. Together they form a unique fingerprint.Projects
- 4 Finished
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Blue-Emitting Phospors: Blue-emitting Phosphors for Solid State Lighting Applications
Zysman-Colman, E. (PI)
1/06/15 → 30/09/19
Project: Standard
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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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Upgrade Small Equipment Base: Small items of research equipment at the University of St Andrews. Supporting a new generation of physical sciences research
Woollins, J. D. (PI)
1/11/12 → 31/03/13
Project: Standard
Datasets
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Data underpinning - Controlling the Emission Efficiency of Blue-Green Iridium(III) Phosphorescent Emitters and Applications in Solution-Processed Organic Light-Emitting Diodes
Sajjad, M. T. (Creator), Sharma, N. (Creator), Pal, A. K. (Creator), Hasan, K. (Creator), Xie, G. (Creator), Kölln, L. S. (Creator), Hanan, G. S. (Creator), Samuel, I. D. W. (Creator) & Zysman-Colman, E. (Creator), University of St Andrews, 2016
DOI: 10.17630/ee2af4f4-d700-4390-ae66-340a71120dc5
Dataset
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