期刊
NANO LETTERS
卷 14, 期 6, 页码 3117-3123出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl501763z
关键词
Protecting ligand; colloidal inorganic nanocrystal; nickel oxide; hole-transporting interlayer; solution-processed optoelectronic device
类别
资金
- National High Technology Research and Development Program of China [2011AA050520]
- National Basic Research Program of China (973 Program) [2012CB932402]
- National Natural Science Foundation of China [51172203]
- Natural Science Funds for Distinguished Young Scholar of Zhejiang Province [R4110189]
- Public Welfare Project of Zhejiang Province [2013C31057]
- European Commission under a Marie Curie Intra-European Fellowship for Career Development
We demonstrate a facile and general strategy based on ligand protection for the synthesis of unstable colloidal nanocrystals by using the synthesis of pure p-type NiO nanocrystals as an example. We find that the introduction of lithium stearate, which is stable in the reaction system and capable of binding to the surface of NiO oxide nanocrystals, can effectively suppress the reactivity of NiO nanocrystals and thus prevent their in situ reduction into Ni. The resulting p-type NiO nanocrystals, a highly demanded hole-transporting and electron-blocking material, are applied to the fabrication of organic solar cells and polymer light-emitting diodes, demonstrating their great potential as an interfacial layer for low-cost and large-area, solution-processed optoelectronic devices.
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