Simultaneous improvement of emission color, singlet–triplet energy gap, and quantum efficiency of blue thermally activated delayed fluorescent emitters using a 1-carbazolylcarbazole based donor
| Autor: | Jun Yeob Lee, Mounggon Kim, Jeong Min Choi |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
business.industry Band gap Metals and Alloys 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Fluorescence Catalysis 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Materials Chemistry Ceramics and Composites Astrophysics::Solar and Stellar Astrophysics Optoelectronics Quantum efficiency Singlet state Physics::Chemical Physics 0210 nano-technology business |
| Zdroj: | Chemical Communications. 52:10032-10035 |
| ISSN: | 1364-548X 1359-7345 |
| DOI: | 10.1039/c6cc04516b |
| Popis: | Blue thermally activated delayed fluorescent (TADF) emitters having 1-carbazolylcarbazole based donor moieties were developed to resolve the low quantum efficiency and large singlet-triplet energy splitting issues of the linker free TADF emitters. Investigation of the 1-carbazolylcarbazole derived donors as the donor units of two blue TADF emitters in comparison with 3-carbazolylcarbazole demonstrated that the 1-carbazolylcarbazole based donors increased the triplet energy, decreased the singlet-triplet energy gap, blue-shifted the emission color, and enhanced the quantum efficiency of the blue TADF devices. |
| Databáze: | OpenAIRE |
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