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Ligand Exchange of Colloidal ZnO Nanocrystals from the High Temperature and Nonaqueous Approach

ISSN号：2150-5551
期刊名称：Nano-Micro Letters
时间：2013
页码：274-280
分类：TQ132.41[化学工程—无机化工] TB383.1[一般工业技术—材料科学与工程]
作者机构：State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Cyrus Tang Center for Sensor Materials and Applications, Zhejiang University, Center for Chemistry of High-Performance and Novel Materials, Zhejiang University, Department of Electronic Engineering, Shanghai Jiao Tong University
相关基金：financially supported by the National Natural Science Foundation of China (51172203);the National High Technology Research and Development Program of China (2011AA050520);the Public Welfare Project of Zhejiang Province (2013C31057);the Natural Science Funds for Distinguished Young Scholar of Zhejiang Province (R4110189)
相关项目：掺杂ZnO纳米晶的可控合成机理与光电性能调控研究

作者： Bai, Sai|Jin, Yizheng|Ye, Zhizhen|Guo, Xiaojun|

中文摘要：

Colloidal zinc oxide(ZnO) nanocrystals generated from the high temperature and nonaqueous approache are attractive for use in solution-processed electrical and optoelectronic devices. However, the asprepared colloidal ZnO nanocrystals by this approach are generally capped by ligands with long alkyl-chains,which is disadvantage for solution-processed devices due to hindering charge transport. Here we demonstrate an effective ligand exchange process for the colloidal ZnO nanocrystals from the high temperature and nonaqueous approach by using n-butylamine. The ligand exchange process was carefully characterized. The thin films based on colloidal ZnO nanocrystals after ligand exchange exhibited dramatically enhanced UV photoconductivity.

英文摘要：

Colloidal zinc oxide (ZnO) nanocrystals generated from the high temperature and nonaqueous approache are attractive for use in solution-processed electrical and optoelectronic devices. However, the as-prepared colloidal ZnO nanocrystals by this approach are generally capped by ligands with long alkyl-chains, which is disadvantage for solution-processed devices due to hindering charge transport. Here we demonstrate an effective ligand exchange process for the colloidal ZnO nanocrystals from the high temperature and nonaqueous approach by using n-butylamine. The ligand exchange process was carefully characterized. The thin films based on colloidal ZnO nanocrystals after ligand exchange exhibited dramatically enhanced UV photoconductivity.

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