Structure · dataset · 2017
Effect of pH on Optic and Structural Characterization of Chemical Deposited AgI Thin Films
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AgI thin films were grown on amorphous commercial glass substrates with chemical bath deposition (CBD) at different pH values (2, 3, 4, 5, 6), 6 hours deposition time and 60 °C. The structure of the nanocrystals was characterized by X-ray diffraction (XRD).
Description
The ratio of Ag+ and I- ions changed the crystalline structures. The presence of the Ag+ ions produces the γ-phase of AgI and excess of iodine concentration produces β-phase of AgI.
The pH: 4 was like a transition pH for these phases. The number of crystallites per unit area has maximum value at pH: 5, as the structure is re-crystallization to hexagonal phase. Also, the thicknesses of produced thin films were decreased with increased pH values.
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Therefore, transmission, reflection, extinction coefficients and refractive index of the materials were affected by thicknesses, and calculated to be 32, 35, 3, 11, 9 (%) - 27, 25, 61, 45, 49 (%) - 0.036, 0.032, 0.067, 0.107, 0.075 and 3.21, 3.02, 5.16, 8.35, 5.70 in 550 nm at pH: 2-3-4-5-6 values, respectively. The exciton peaks of AgI were observed at between 320 and 420 nm. Surface properties were investigated by using scanning electron microscopy (SEM).
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- Repository landing page scielo.figshare.com/articles/Effect_of_pH_on_Optic_and_Structural_Characterization… ↗
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- DOI doi.org/10.6084/m9.figshare.5645263.v1 ↗
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- Creative Commons Attribution 4.0 International creativecommons.org/licenses/by/4.0/legalcode ↗
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- IsSupplementTo 10.1590/1980-5373-mr-2017-0319 doi.org/10.1590/1980-5373-mr-2017-0319 ↗
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- DataCite API api.datacite.org/dois/10.6084/m9.figshare.5645263.v1 ↗
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Topics
- Stated by source
- Chemical engineering · Materials engineering
- Inferred from text
- Microscopy 75%
Related
Provenance · 1 source records, 11 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| DataCite | 10.6084/m9.figshare.5645263.v1 | 13 d ago | JSON v1 |
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| concepts[field].fos:chemical-engineering | source · DataCite | connector:datacite@1.0.0 | |
| concepts[field].fos:materials-engineering | source · DataCite | connector:datacite@1.0.0 | |
| concepts[modality].local:modality:microscopy | enrichment · DataCite | keyword-concept-rules@1.0.0 | title+description (75%) |
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