Zinc oxide and Copper oxide p–n junctions are promising materials which can be used to create electronic devices such as diodes, transistors, and solar cells. The present work investigates the absorbance and percentage transmittance of zinc oxide and copper oxide for use in solar cells using screen printing techniques. Zinc oxide (ZnO) and Copper oxide (CuO) were successfully deposited on a glass slide substrate, Zinc oxide produced white film after deposition, CuO produced blackish film after deposition, three different samples of each was produced, the unannealed sample, sample annealed at 150 °C for 30 minutes and sample annealed at 200 °C for 30 minutes, The UV – Visible spectroscopy analysis was carried out to determine the absorption radiation and percentage transmittance of the annealed and unannealed samples of ZnO and CuO layers of a thin film using UV-VIS Spectrometer. Among all the samples, CuO sample annealed at 150 °C and CuO sample annealed at 200 OC has the strong absorption at wavelength range of 920 – 970 nm and 880 - 902 nm respectively, likewise the ZnO sample annealed at 150 OC and ZnO sample annealed at 200 OC has the absorption values at the range of wavelength 340 – 370 nm and 350 – 370 nm respectively, which made the thin film appropriate for electronic devices applications such as diodes, transistors, and solar cell. For the percentage transmittance result, CuO sample annealed at 150 OC for 30 minutes has the higher percentage transmittance at 790 nm wavelength.
Key words: Absorbance, Transmittance, Annealing, Screen printing, Solar cell.
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