In situ TEM investigation of indium oxide/titanium oxide nanowire heterostructures growth through solid state reactions

Jing Han Chang, Yi Tang Tseng, An Yuan Ho, Hung Yang Lo, Chih Yang Huang, Shu Chin Tsai, Tzu Hsuan Yu, Yu Lien Wu, Hsi Kai Yen, Ping Hung Yeh, Kuo Chang Lu, Wen Wei Wu

Research output: Contribution to journalArticlepeer-review

Abstract

Heterostructured TiO2/In2O3 nanowires have been extensively applied in various photonic devices; their performance is highly related to the microstructures, which has not been, however, clearly understood; thus, it is important to investigate the microstructural evolution of the material during processing. In this work, the crystallinity and microstructure of TiO2/In2O3 nanowires were successfully controlled with the variation of annealing temperatures via solid-state reactions. The dynamic phase transformation process was demonstrated by in situ transmission electron microscope (TEM). Moreover, the elemental information at different states was identified by energy dispersive spectroscopy (EDS). It is found that different annealing temperatures would contribute to different solid-state reactions and nanowire heterostructures. Additionally, photoresponse studies show characteristics enhancement for such nanoheterostructures. This study provides the knowledge of the fundamental science in kinetics of heterostructured nanostructures, which benefits the improvement of the performance for future photonic applications.

Original languageEnglish
Article number111832
JournalMaterials Characterization
Volume187
DOIs
Publication statusPublished - 2022 May

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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