Projects per year
Abstract
The development of organic down-converting materials continues to attract attention in hybrid LED technology by obviating the need for non-sustainable rare-earth elements. In this work, a benzodiimidazole-based system (TPA-BDI) has been employed as a down-converting layer in a hybrid organic-inorganic LED device. A commercially available poly(urethane)-based resin is used as the encapsulating material, providing a dilute layer of TPA-BDI that is deposited on top of the GaN-based LED. Crucially, the solution-state emissive performance is generally maintained when encapsulated at low concentrations within this resin. A maximum luminous efficacy of 87 lm W -1 was demonstrated using a 1.0 mg ml -1 concentration of TPA-BDI in the resin. The suitability of using organic down-converters to produce green light from hybrid devices was demonstrated by the excellent repeatability of the device characteristics across a series of encapsulated LEDs.
Original language | English |
---|---|
Pages (from-to) | 1006-1012 |
Number of pages | 7 |
Journal | Materials Chemistry Frontiers |
Volume | 4 |
Issue number | 3 |
Early online date | 6 Feb 2020 |
DOIs | |
Publication status | Published - 1 Mar 2020 |
Keywords
- down-converter
- LEDs
- TPA-BDI
- hybrid LED technology
Fingerprint
Dive into the research topics of 'A poly(urethane)-encapsulated benzo[2,3-d:6,7-d']diimidazole organic down-converter for green hybrid LEDs'. Together they form a unique fingerprint.Projects
- 2 Finished
-
'Hetero-print': A holistic approach to transfer-printing for heterogeneous integration in manufacturing
Dawson, M. (Principal Investigator), Martin, R. (Co-investigator), Strain, M. (Co-investigator), Watson, I. (Co-investigator) & Guilhabert, B. J. E. (Research Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/06/18 → 31/05/24
Project: Research
-
Light-controlled manufacturing of semiconductor structures: a platform for next generation processing of photonic devices
Martin, R. (Principal Investigator), Dawson, M. (Co-investigator), Edwards, P. (Co-investigator), Skabara, P. (Co-investigator) & Watson, I. (Co-investigator)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/17 → 31/07/22
Project: Research