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Enhancement of CuO/Si Solar Cell Efficiency by Cu₂O Doping Prepared Via Thermal Evaporation Technique

Zainab Qassim

Department of Physics, College of Science, University of Babylon, Iraq

E-mail Address: zainab.sofi@student.uobabylon.edu.iq

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Abdulazeez O. Mousa Al-Ogaili

Department of Physics, College of Science, University of Babylon, Iraq

E-mail Address: sci.abdul.azeez@uobabylon.edu.iq

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, and

Khalid Haneen Abass

https://orcid.org/0000-0002-0601-8303

Department of Physics, College of Education for Pure Sciences, University of Babylon, Iraq

E-mail Address: pure.khalid.haneen@uobabylon.edu.iq

Corresponding author.

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https://doi.org/10.1142/S1793292024500851Cited by:0 (Source: Crossref)

Abstract

CuO:Cu₂O/Si heterojunctions have been prepared with different concentrations of Cu₂O nanoparticles using the thermal evaporation technique. The X-ray diffraction (XRD) results show that the prepared films are polycrystalline with orthorhombic structure and preferential orientation (110) direction along the $c$ $c$ axis at $2 𝜃 = 32.8 2^{\circ}$ $2 𝜃 = 32.8 2^{\circ}$ , which corresponds to the pure CuO with crystallite size 18nm, while the particle size ranged from 14nm to 34 nm (resulted from SEM test). The optical properties were studied by recording the absorbance spectra using the UV–visible spectrophotometer. The absorbance increased with Cu₂O doping. The high values of the energy gap refer to the quantization effect. The electrical properties including the Hall effect were studied. CuO:Cu₂O/Si heterojunctions have been prepared at different concentrations. $I$ $I$ – $V$ $V$ characteristics show that the Cu₂O doping increases the energy conversion efficiency by retarding the electron–hole recombination and the improved device performance is caused by the high short-circuit current ( $I_{sc})$ $I_{sc})$ and open circuit voltage ( $V_{oc})$ $V_{oc})$ and found that the highest efficiency ( $η)$ $η)$ at doping 0.006 Cu₂O 3.471% with $V_{oc}$ $V_{oc}$ of 2.20V, $I_{sc}$ $I_{sc}$ of 0.0170mA cm $^{- 2}$ $^{- 2}$ and F.F of 0.6497 at $P = 100$ $P = 100$ mW/cm².

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