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Large Size Color-tunable Electroluminescence from Cationic Iridium Complexes-based Light-emitting Electrochemical Cells
- Source :
- Scientific Reports
- Publication Year :
- 2016
- Publisher :
- Nature Publishing Group, 2016.
-
Abstract
- Solution-processable light-emitting electrochemical cells (LECs) with simple device architecture have become an attractive candidate for application in next generation lighting and flat-panel displays. Herein, single layer LECs employing two cationic Ir(III) complexes showing highly efficient blue-green and yellow electroluminescence with peak current efficiency of 31.6 cd A−1 and 40.6 cd A−1, respectively, have been reported. By using both complexes in the device, color-tunable LECs with a single spectral peak in the wavelength range from 499 to 570 nm were obtained by varying their rations. In addition, the fabrication of efficient LECs was demonstrated based on low cost doctor-blade coating technique, which was compatible with the roll to roll fabrication process for the large size production. In this work, for the first time, 4 inch LEC devices by doctor-blade coating were fabricated, which exhibit the efficiencies of 23.4 cd A−1 and 25.4 cd A−1 for the blue-green and yellow emission, respectively. The exciting results indicated that highly efficient LECs with controllable color could be realized and find practical application in large size lighting and displays.
- Subjects :
- Multidisciplinary
Fabrication
Materials science
business.industry
Cationic polymerization
chemistry.chemical_element
02 engineering and technology
Electroluminescence
engineering.material
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Article
0104 chemical sciences
Roll-to-roll processing
Electrochemical cell
chemistry
Coating
engineering
Optoelectronics
Iridium
0210 nano-technology
business
Large size
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Volume :
- 6
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....0a60b9c5862162ed8b8095e6a4279bd2