Dependence of optical properties of Mg-doped ZnO nanorods on Al dopant

Rahmat Setiawan Mohar, Iwan Sugihartono, Vivi Fauzia, Akrajas Ali Umar

Research output: Contribution to journalArticle

Abstract

We have synthesized Mg-doped ZnO and Al-Mg co-doped ZnO nanorods with various Al/Zn ratios of 1%, 2%, 3% by hydrothermal at 95 °C for 6 h. Morphologically, the Mg-doped and Al-Mg co-doped ZnO nanorods have a clear hexagonal shape. According to the inorganic crystal structure database (ICSD) number #98-002-9272, all samples possess polycrystalline wurtzite structure and preferred orientation in (002) plane. The crystallite size and micro-strain changed with Al incorporation into Mg-doped ZnO nanorods. Optical bandgap energy of the Al-Mg co-doped ZnO nanorods indicates that the increasing Al content decreases bandgap energy linearly. The influence of Al dopants on optical properties of Mg-doped ZnO nanorods causes blue shifts of UV emission which is due to the Burstein-Moss (BM) effect.

Original languageEnglish
Article number100518
JournalSurfaces and Interfaces
Volume19
DOIs
Publication statusPublished - Jun 2020

Keywords

  • Al-Mg co-doped ZnO nanorods
  • Al/Zn ratio
  • Burstein-Moss (BM) effect
  • Optical bandgap energy
  • Polycrystalline wurtzite structure

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