| Summary: | 碩士 === 國立彰化師範大學 === 機電工程學系 === 100 === In this research were prepared ZnS buffer layer thin films by
chemical bath deposition, and used in CIGS solar cells. The research used
Hermetic CBD process to improve the open process is vulnerable to
humidity caused by the uneven films coated, and compare the impact of
CdS and ZnS on the CIGS solar cell efficiency. In this research using
scanning electron microscopy analysis of ZnS surface morphology,
analysis component of film by XPS, films structural analysis by X-ray
diffraction, and films optical transmittances by spectroscopy (UV-VIS).
The results of the research, Hermetic CBD process under different
atmospheric humidity prepared ZnS film, the films is not easy to be
affected by environmental humidity changes, films at different humidities
O measured from the XPS volume percentage of about 26%, while the
S/Zn ratio of about 0.82, the surface roughness of about 4.5 nm, and films
structure for the zinc blende structure. The Hermetic CBD process zinc
sulfate ( ZnSO4 ) 0.1M. thiourea (SC(NH2)2) 0.6 M. hydrazine (N2H4)
10cc. the solution temperature at 80℃ and pH 9.7 deposited at 25 min
can prepared better ZnS films, the average optical transmittance in the
visible (380 to 800nm) approximately 77%, the optical bandgap of 3.8eV,
and used in CIGS solar cells buffer layer, available the photoelectric
conversion efficiency of 0.56%.
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