Investigation of spray pyrolyzed copper oxide as a photocathode in photoelectrochemical energy conversion
| Autor: | Abhijit Ray, Priyanka Marathey, Biren Patel, Sakshum Khanna |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Photocurrent Copper oxide Materials science Aqueous solution Oxide 02 engineering and technology Electrolyte Substrate (electronics) Atmospheric temperature range 021001 nanoscience & nanotechnology 01 natural sciences chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Thin film 0210 nano-technology |
| Zdroj: | Materials Today: Proceedings. 28:883-887 |
| ISSN: | 2214-7853 |
| DOI: | 10.1016/j.matpr.2019.12.317 |
| Popis: | Herein we report, the development of nanostructured copper oxide thin films over glass and FTO-coated glass substrates by spray pyrolysis technique. Tenorite CuO thin films having closed packed two-dimensional assembly of nanostructures have been successfully deposited by spraying aqueous copper nitrate solution. The spray rate was maintained at ∼1–1.5 ml/min and the substrate temperature range were maintained around 300 °C to 350 °C. The effect of precursor concentration variation was investigated and the physical properties of the developed CuO was studied by different characterization techniques like FE-SEM, X-Ray Diffraction Spectroscopy and UV–vis spectroscopy. It was clearly observed from the obtained results that the droplet size distribution and the surface morphology could be easily controlled by changing the precursor concentration and deposition temperature. The photoelectrochemical (PEC) performance of the optimized cupric oxide film was further studied. The spray deposited CuO having indirect bandgap of 1.59 eV as estimated from the Tauc’s plot with a predominant (1 1 1) plane exhibited photocurrent of ∼1 mA/cm2 vs RHE under AM 1.5 solar radiation in the neutral electrolyte. Here, the influence of precursor concentration, electrolyte variation and role of electron scavenging agent on PEC performance of spray deposited CuO thin films were investigated. |
| Databáze: | OpenAIRE |
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