Syntheses, Properties, and Applications of Fluorinated Electron-transporting Materials
碩士 === 國立臺灣大學 === 化學研究所 === 105 === Over the last few decades, the! internal quantum efficiency (IQE) has alreaedy reached 100% in organic light- emitting diodes (OLEDs). However, the out-coupling efficiency of the device can’t break the limit around 30%. Which is the main reason that we can’t achie...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2017
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| Online Access: | http://ndltd.ncl.edu.tw/handle/6d3fwd |
| Summary: | 碩士 === 國立臺灣大學 === 化學研究所 === 105 === Over the last few decades, the! internal quantum efficiency (IQE) has alreaedy reached 100% in organic light- emitting diodes (OLEDs). However, the out-coupling efficiency of the device can’t break the limit around 30%. Which is the main reason that we can’t achieve higher external quantum efficiency (EQE). We introduced fluorine atoms to commonly used electron-transporting materials (ETLs), and fully investigated to explore their structure-property-performance relationship. The most important physical property is the reflactive indice of the materials, which can enhance resonator effect between the layers of device and achieve higher EQE. The reflactive indice of the materials we synthesized were lower than 1.7. Furthermore, the introduction of fluorine atoms onto these molecules improved the thermal stability and gave proper energy levels as ETLs.
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