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Revista mexicana de física
Print version ISSN 0035-001X
Abstract
ALBOR AGUILERA, M.L. et al. Improving the optical and crystalline properties on CdS thin films growth on small and large area by using CBD technique. Rev. mex. fis. [online]. 2016, vol.62, n.2, pp.129-134. ISSN 0035-001X.
CdS polycrystalline thin films have been used as window layer in solar cells; the optical and crystalline quality of the CdS-partner plays an important role in the photovoltaic device performance. CdS thin films were deposited by using Chemical Bath Deposition (CBD). The SnO2 :F substrates used were chemically treated with HCl (0.1M) and others were thermally annealed in different atmospheres (Ar y O2). The physical properties of CdS thin films were influenced by the HCl treatment, position, size and the substrates movement inside the reaction beaker. The CdS samples were deposited in áreas of 4 cm2, 50 cm2 and 100 cm2. Finaly CdS thin films with thickness of 35-300 nm with good optical and crystalline quality on a uniform morphology were obtained. Transmittance values were obtained for all samples about 85-90% with an average of gap energy of 2.5 eV.
Keywords : CdS; CBD; solar cells.