Composition of CuInS2 thin films prepared by spray pyrolysis
| Autor: | I. Oja, O. Kijatkina, Malle Krunks, H. Rebane, Valdek Mikli, Arvo Mere |
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| Rok vydání: | 2002 |
| Předmět: |
Annealing (metallurgy)
Chemistry Inorganic chemistry Metals and Alloys Surfaces and Interfaces Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystallinity Elemental analysis Impurity Materials Chemistry Fourier transform infrared spectroscopy Thin film Pyrolysis Chemical composition Nuclear chemistry |
| Zdroj: | Thin Solid Films. :71-75 |
| ISSN: | 0040-6090 |
| Popis: | CuInS 2 films were prepared by spray pyrolysis technique using CuCl 2 , InCl 3 and SC(NH 2 ) 2 as initial chemicals. The content of Cl, O, C and N impurities in sprayed CuInS 2 films were measured by EDS, WDS, RBS and organic elemental analysis. The growth temperatures of 260-280°C result in Cl, C, N content of 8 mass% and the impurity phases contain SCN, CN, NH, SO 4 groups as identified by FTIR. The increase in the growth temperature up to 380°C decreases the concentration of Cl, C, N to 1-2 mass%, concurrently leading to oxidation of inorganic and organic phases resulting in O content of 16.7 at.%. The content of impurities originated from precursors is mainly controlled by the growth temperature and in less extent by the Cu/In ratio in spray solution as Cu-rich solutions result in the films with reduced content of organic residues. Thermal treatments in reducing atmospheres at 450°C improves the crystallinity of the films while annealing in flowing H 2 effectively reduces the content of Cl and O impurities. |
| Databáze: | OpenAIRE |
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