| Full text | |
| Author(s): |
Total Authors: 4
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| Affiliation: | [1] Univ Fed Sao Carlos, Dept Fis, PA 167, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 1
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| Document type: | Journal article |
| Source: | JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS; v. 128, p. 131-135, NOV 2017. |
| Web of Science Citations: | 2 |
| Abstract | |
We report a systematic investigation on the structural and optical properties of Co-doped ZnO and Co3O4 thin films grown by spray pyrolysis using acetates as precursors in low molarity solutions. XRD and optical transmittance measurements do not show secondary phases. Optical measurements exhibit the Co2+ signatures related to tetrahedral coordination in absorption and emission. Temperature-dependent PL shows the influence of traps up to 200 K when they are shielded by thermal energy. The qualitative potential fluctuations model allows the evaluation of traps depth of as tenths of meV and the influence of Co-doping in the neighborhood of optically active Co2+. (AU) | |
| FAPESP's process: | 13/17657-2 - Synthesis and optical properties of semiconductor systems for spintronics |
| Grantee: | Marcio Peron Franco de Godoy |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/10973-4 - Defects and their features in semiconductor oxides films produced by spray-pyrolysis technique |
| Grantee: | Marcio Peron Franco de Godoy |
| Support Opportunities: | Regular Research Grants |