期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 116, 期 3, 页码 2543-2547出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp205871a
关键词
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资金
- Ministry of Science and Technology of China
- National Natural Science Foundation of China
- Science and Technology Commission of Shanghai Municipality
Au is not a suitable cathode material of organic light-emitting device because of its high work function resulting in poor electron injection. However, in present work, it is found that the performance of Au-cathode OLEDs can be efficiently improved by introducing a LiF buffer layer and with its optimal thickness can even be comparable to that of conventional Al-cathode device. The relationship between the thickness of LiF layer and the performance improvement is investigated. The experimental results indicate a quite different mechanism of LiF thin layer from that of Al-cathode device, which is not chemical-reaction-mechanism-dominant. Other insulator material buffer layers such as Al2O3 and BCP are also investigated.
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