ZnO

Sn deposition by Sol-Gel method: Effect of annealing on the structural, morphology and optical properties

Huda Abdullah, S. Selmani, M. N. Norazia, P. Susthitha Menon N V Visvanathan, S. Shaari, Chang Fu Dee

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Sn doped zinc oxide polycrystalline thin films were prepared by sol-gel process. The sol was prepared from zinc acetate dehydrate and tin chloride were used. 2-methoxyethanol and monoethanolamine were used as the solvent and stabilizer, respectively. The quantity of tin in the sol was 0, 15, and 25 at.% Sn with annealing temperature 400, 500 and 600°C. Structural investigation including surface morphology and microstruclure was carried out by X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The films give a hexagonal wurtzite structure with diffraction peaks at (100), (002) and (101). Changes in particle size with an increase in annealing temperature were observed in the SEM micrograph. The optical properties were determined by photoluminescence (PL) and uv-Vtsible (UV-vis-NIR) spectrometer. The band gaps increased (2.78 eV to 4.10eV) as the concentration of Sn was increased and the increasing of annealing temperature. Annealing temperature plays a key role in the formation of defects which is strongly related to the nonradiative recombination centers. The increment of the band gap is acceptable as a requirement for good anti-reflecting coating element. Therefore, these films can be applied on silicon solar cells.

Original languageEnglish
Pages (from-to)245-250
Number of pages6
JournalSains Malaysiana
Volume40
Issue number3
Publication statusPublished - Mar 2011

Fingerprint

gels
optical properties
annealing
tin
monoethanolamine (MEA)
scanning electron microscopy
temperature
sol-gel processes
diffraction
wurtzite
zinc oxides
acetates
zinc
solar cells
chlorides
spectrometers
photoluminescence
coatings
requirements
defects

Keywords

  • Annealing temperature
  • Anti-reflecting coating
  • Sol-gel

ASJC Scopus subject areas

  • General

Cite this

ZnO : Sn deposition by Sol-Gel method: Effect of annealing on the structural, morphology and optical properties. / Abdullah, Huda; Selmani, S.; Norazia, M. N.; N V Visvanathan, P. Susthitha Menon; Shaari, S.; Dee, Chang Fu.

In: Sains Malaysiana, Vol. 40, No. 3, 03.2011, p. 245-250.

Research output: Contribution to journalArticle

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