Temperature-driven structural and morphological evolution of zinc oxide nano-coalesced microstructures and its defect-related photoluminescence properties

Karkeng Lim, Muhammad Azmi Abdul Hamid, Roslinda Shamsudin, N. H. Al-Hardan, Ishak Mansor, Weesiong Chiu

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

In this paper, we address the synthesis of nano-coalesced microstructured zinc oxide thin films via a simple thermal evaporation process. The role of synthesis temperature on the structural, morphological, and optical properties of the prepared zinc oxide samples was deeply investigated. The obtained photoluminescence and X-ray photoelectron spectroscopy outcomes will be used to discuss the surface structure defects of the prepared samples. The results indicated that the prepared samples are polycrystalline in nature, and the sample prepared at 700 °C revealed a tremendously c-axis oriented zinc oxide. The temperature-driven morphological evolution of the zinc oxide nano-coalesced microstructures was perceived, resulting in transformation of quasi-mountain chain-like to pyramidal textured zinc oxide with increasing the synthesis temperature. The results also impart that the sample prepared at 500 °C shows a higher percentage of the zinc interstitial and oxygen vacancies. Furthermore, the intensity of the photoluminescence emission in the ultraviolet region was enhanced as the heating temperature increased from 500 °C to 700 °C. Lastly, the growth mechanism of the zinc oxide nano-coalesced microstructures is discussed according to the reaction conditions.

Original languageEnglish
Article number300
JournalMaterials
Volume9
Issue number4
DOIs
Publication statusPublished - 2016

Fingerprint

Zinc Oxide
Zinc oxide
Photoluminescence
Defects
Microstructure
Temperature
Thermal evaporation
Oxygen vacancies
Surface structure
Oxide films
Zinc
Structural properties
X ray photoelectron spectroscopy
Optical properties
Heating
Thin films

Keywords

  • Photoluminescence spectrofluorometer
  • Surface structure defects
  • Thin films
  • Vapor deposition
  • X-ray photoelectron spectroscopy
  • Zinc oxide

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Temperature-driven structural and morphological evolution of zinc oxide nano-coalesced microstructures and its defect-related photoluminescence properties. / Lim, Karkeng; Abdul Hamid, Muhammad Azmi; Shamsudin, Roslinda; Al-Hardan, N. H.; Mansor, Ishak; Chiu, Weesiong.

In: Materials, Vol. 9, No. 4, 300, 2016.

Research output: Contribution to journalArticle

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AU - Mansor, Ishak

AU - Chiu, Weesiong

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