Journal
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME
Volume 143, Issue 4, Pages -Publisher
ASME
DOI: 10.1115/1.4048791
Keywords
absorber; efficiency; energy; materials; measurement; optics; photovoltaics; renewable; solar
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Funding
- Ministry of Science and Technology (MOST), Taiwan [MOST 108-2119-M-002-025-MY3, MOST 108-2112-M-002014-MY2]
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In this paper, a ZnO/CdS/CuO:Co solar cell was successfully prepared on a glass/indium oxide (ITO) substrate using RF-sputtering and sol-gel methods. The device exhibited promising photovoltaic activity, providing a foundation for further optimizations in the future.
In this paper, a ZnO/CdS/CuO:Co solar cell was prepared on a glass/indium oxide (ITO) substrate. First, we use RF-sputtering to deposit the window (ZnO) layer by optimizing the oxygen pressure while keeping the RF power at 200 W. Fourier transform infrared and X-ray reflectometry spectra were carried out, and it is found that 30% of O-2 is the optimal percentage to obtain the best density and the best refractive index for the ZnO layer. The CdS layer was then deposited by the sol-gel method to align the energy bands, and a layer of CuO:Co with a thickness of 750 nm was deposited, also by reactive RF-sputtering technique. Finally, the electrical contacts were made by depositing circular silver electrodes. The obtained photovoltaic activity of device confirms that the aforementioned method is promising for further future optimizations.
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