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Fabrication and Characterization of the Broccoli-like Structured CuO Thin Films Synthesized by a Facile Hydrothermal Method and Its Photoelectrochemical Water Splitting Application
| Content Provider | MDPI |
|---|---|
| Author | Lam, Nguyen Hoang Truong, Nguyen Tam Nguyen Thuy, Chau Thi Thanh Tamboli, Mohaseen S. Tamboli, Asiya M. Jung, Jinjoo Ahn, Kwang-Soon Kim, Chang-Duk Jung, Jae Hak |
| Copyright Year | 2022 |
| Description | CuO thin films with broccoli-like structure were prepared using a facile hydrothermal method to construct photocathodes for water-splitting application. The morphological, structural, and optical properties of thin films were characterized and measured using several techniques, including X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), photoluminescence (PL), and ultraviolet-visible spectroscopy (UV-Vis). The thickness, structure, and morphology of CuO thin films can be controlled by varying the precursor concentration $(C_{p}$) and reaction temperature $(T_{r}$), which are also discussed. Moreover, the electrical properties of CuO thin films were also measured in the three-electrode system. The photocurrent density of photocathodes, when synthesized by a 0.5 M solution at 150 °C for 12 h, was 0.5 $mA/cm^{2}$ at −0.6 V vs. Ag/AgCl, which is 1.8 times higher than that of photocathodes synthesized in a 0.1 M solution at 100 °C with the same reaction time. In addition, increasing the reaction temperature and precursor concentration aided in the enhancement of the IPCE and APCE values, which peaked at a wavelength range of 330–400 nm. |
| Starting Page | 484 |
| e-ISSN | 20754701 |
| DOI | 10.3390/met12030484 |
| Journal | Metals |
| Issue Number | 3 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-03-13 |
| Access Restriction | Open |
| Subject Keyword | Metals Remote Sensing Cuo Thin Film Hydrothermal Method Morphology Photocurrent Density Water Splitting |
| Content Type | Text |
| Resource Type | Article |
