期刊
NANO LETTERS
卷 13, 期 2, 页码 475-480出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl3038689
关键词
Silicon nanocrystals; quantum dot light-emitting diodes (QD-LEDs); quantum dot; electroluminescence; tunable color; hybrid organic quantum dot light-emitting diode (hybrid QD-OLED)
类别
资金
- Natural sciences and Engineering Council of Canada
- Ministry of Science, Research and the Arts of Baden-Wurttemberg
We present highly efficient electroluminescent devices using size-separated silicon nanocrystals (ncSi) as light emitting material. The emission color can be tuned from the deep red down to the yellow-orange spectral region by using very monodisperse size-separated nanoparticles. High external quantum efficiencies up to 1.1% as well as low turn-on voltages are obtained for red emitters. In addition, we demonstrate that size-separation of ncSi leads to drastically improved lifetimes of the devices and much less sensitivity of the emission wavelength to the applied drive voltage.
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