Effect of thermal annealing and cooling rate on CBD grown CdS thin films
| Autor: | Jaydeep V. Sali, Sanjay S. Ghosh, Raees A. Gani Shaikh, Sagar A. More, Sandesh Jadkar, Gauri G. Bisen |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Absorption spectroscopy Scanning electron microscope Analytical chemistry Substrate (electronics) Conductivity Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Crystallinity symbols.namesake Electrical resistivity and conductivity 0103 physical sciences symbols Electrical and Electronic Engineering Thin film Raman spectroscopy |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:20354-20359 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-02238-4 |
| Popis: | CdS films were deposited by CBD on a glass substrate by using CdI2 as a Cd+ source, thiourea as an S− source and NH4OH as the complexing agent. The effect of slow and rapid cooling on the films after thermal annealing was investigated in the present study. X-ray diffraction and Raman spectra of the films suggest that thermal annealing followed by slow cooling gives CdS with enhanced crystallinity and reduced strain and dislocation density as compared to the films where they were cooled rapidly after thermal annealing. The results were supported by scanning electron microscopy and UV–Vis absorption spectroscopy. Hall Effect measurement shows the lowest resistivity and highest mobility obtained in the case of a slowly cooled sample as compared to the rapidly cooled sample. Carrier concentration in the range of about 1011 (cm−3) was found, and all the samples of CdS were of n-type conductivity. |
| Databáze: | OpenAIRE |
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