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Vol. 5 No. 4 (2013)

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

https://doi.org/10.1007/BF03353758
Jun Luo
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Xingliang Dai
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Sai Bai
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Yizheng Jin
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Zhizhen Ye
State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People’s Republic of China
Xiaojun Guo
Department of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China

Corresponding Author: Yizheng Jin

yizhengjin@zju.edu.cn

Nano-Micro Letters, Vol. 5 No. 4 (2013), Article Number: 274-280

Abstract

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 with ligand exchange exhibited dramatically enhanced UV photoconductivity.

Keywords

ZnO Nanoparticles Ligand exchange Thin films Photoconductivity
Luo, Jun, Xingliang Dai, Sai Bai, Yizheng Jin, Zhizhen Ye, and Xiaojun Guo. 2013. “Ligand Exchange of Colloidal ZnO Nanocrystals from the High Temperature and Nonaqueous Approach”. Nano-Micro Letters 5 (4):274-80. https://doi.org/10.1007/BF03353758.
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