Chemical Informatics

Analysis of Optical Energy Band Gap of Aluminium Zinc Sulphide(Al2ZnS4)Ternary Thin Films Grown by Solution Growth Technique Kingdom

Aluminium Zinc Sulphide (Al2ZnS4) Ternary Thin Films were
successfully grown on the substrates by Solution Growth Technique ( SGT ).
The sources of Aluminium, Zinc and Sulphur ions are Aluminium Chloride, Zinc
Sulphate, ethylenediamine tetraacetic acide (EDTA), concentrated ammonia
solution and thiourea. The films were annealed at 300Ë?C for 2 hours and
characterized by UV-VIS-NIR Spectrophotometer in the wavelength range of
300nm-1000nm to determine the optical properties of the films. The optical
transmittance was obtained directly by the Spectrophotometer. Other optical
properties were determined by theoretical calculations. The average energy
band gaps of the films grown at two different temperatures are 3.63 and 3.77eV
for different dip times. The other optical properties have been reported. From
the results, the wide direct energy band gap exhibited by the films reveals that
the films are suitable materials as window layer in solar cells fabrication.The
high transmittance exhibited by the films reveal that the films are promising
material for the construction of roofs and walls poultry houses. This will provide
the needed heat required for warming of young chicks and has the potential to
reduce the cost of energy consumption associated with the use of electric bulbs,
stoves and lambs which will produce the needed heat to warm young birds.

Author(s):

Nwifior K

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