Improving the solubility of Mn and suppressing the oxygen vacancy density in Zn0.98Mn0.02O nanocrystals via octylamine treatment

Authors

Yan Cheng, Beihang University, Beijing
Weichang Hao, University of Wollongong
Huaizhe Xu, Beihang University, Beijing
You Yu, Beihang University, Beijing
Tiamin Wang, Beihang University, Beijing
Rui Chen, Jilin University, China
Linjuan Zhang, Beijing Synchrotron Radiation Facility
Yi Du, University of WollongongFollow
Xiaolin Wang, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

69538

Publication Details

Cheng, Y, Hao, W, Xu, H, Yu, Y, Wang, T, Chen, R, Zhang, L, Du, Y, Wang, X & Dou, SX (2012), Improving the solubility of Mn and suppressing the oxygen vacancy density in Zn0.98Mn0.02O nanocrystals via octylamine treatment, ACS Applied Materials and Interfaces, 4(9), pp. 4470-4475.

Abstract

Zn_0.98Mn_0.02O nanocrystals were synthesized by the wet chemical route and were treated with different content of octylamine. The environment around Mn and the defect type and concentration were characterized by photoluminescence, Raman, X-ray photoelectron spectroscopy, and X-ray absorption fine structure. It is found that N codoping effectively enhances the solubility of Mn substituting Zn via reducing donor binding energy of impurity by the orbital hybridization between the N-acceptor and Mn-donor. On the other hand, the O atoms released from MnO₆ and the N ions from octylamine occupy the site of oxygen vacancies and result in reduction of the concentration of oxygen vacancies in Zn_0.98Mn_0.02O nanocrystals.