Salehi, Amin and Ho, Szuheng and Chen, Ying and Peng, Cheng and Yersin, Hartmut and So, Franky (2017) Highly Efficient Organic Light-Emitting Diode Using A Low Refractive Index Electron Transport Layer. ADVANCED OPTICAL MATERIALS, 5 (11): 1700197. ISSN 2195-1071,
Full text not available from this repository. (Request a copy)Abstract
A low refractive index electron transport layer (ETL) can be very effective in enhancing the out-coupling efficiency of an organic light-emitting diode (OLED). However, most organic films show a refractive index close to 1.8. In this work, it has been discovered that tris-[3-(3-pyridyl) mesityl] borane (3TPYMB) has a low refractive index of 1.65 (at 550 nm), which is the lowest refractive index ETL among the commonly used ETLs up to date. Using 3TPYMB as an ETL, a solution processed OLED is demonstrated with nearly a 76% enhancement in external quantum efficiency (EQE). Optical simulation results of this study show that 59% of the enhancement comes from the low refractive index 3TPYMB, and the remaining 17% from the change in charge balance due to the 3TPYMB ETL in the OLED devices.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | OPERATIONAL STABILITY; HOST MATERIALS; SKY-BLUE; DEVICES; OLEDS; GREEN; FLUORESCENCE; RED; electron transport layers; low refractive indexes; organic light emitting diodes; thermally activated delayed florescence |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie > Chair of Chemistry III - Physical Chemistry (Molecular Spectroscopy and Photochemistry) > Prof. Dr. Hartmut Yersin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:10 |
| Last Modified: | 11 Feb 2019 13:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/718 |
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