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Influence of Substrate Temperature on the Photovoltaic/Optoelectronic properties of Spray-Synthesized Yttrium Copper Selenide (YCS) Thin Films

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Abstract

Spray-synthesized yttrium-doped CuSe with emphasis on the effect of substrate temperature ranging from 140 to 200 °C photovoltaics/optoelectronic properties is reported in this study. The energy dispersive spectroscopy investigation confirmed the existence of dopant Y in CuSe thin material. The scanning electron microscopy studies reveal a rough but dense surface morphology, while the X-ray diffraction (XRD) result depicts a cubic polycrystalline structure for all the films with the most preferred orientation at (111) plane without the substrate temperature. The XRD studies showed the highest peak intensity at the substrate temperature of 140 °C which declines as the temperature increases up to 200 °C. From the spectrophotometry studies, all the samples exhibited their peak absorbance value at the UV region of the spectrum (< 400 nm) with films at 140 °C and 160 °C having the highest value. As the temperature of the substrate rises from 140 to 200 °C, bandgap energies ranging from 1.44 to 1.80 eV were observed. The four-point probe revealed that the variation in temperature of the substrate influenced the film thickness and electrical property of the materials. With increased temperature, the film thickness was seen to increase from 152.42 to 198.02 nm with an increase in resistivity and decrease in conductivity.

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Data Availability Statement

The data that support the findings of this study are available on request from the corresponding author.

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Authors and Affiliations

  1. Department of Physics, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria

    Nwamaka Ifeyinwa Akpu, Anyalewechi Daniel Asiegbu & Lebe Agwu Nnanna

  2. Department of Physics and Astronomy, University of Nigeria, Nsukka, 410001, Enugu State, Nigeria

    Imosobomeh Lucky Ikhioya

  3. Geotechnical Department, Arab Center for Engineering Studies, Doha, Qatar

    Tochukwu Innocent Mgbeojedo

Authors
  1. Nwamaka Ifeyinwa Akpu
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  2. Anyalewechi Daniel Asiegbu
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  3. Lebe Agwu Nnanna
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  4. Imosobomeh Lucky Ikhioya
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  5. Tochukwu Innocent Mgbeojedo
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Correspondence to Tochukwu Innocent Mgbeojedo.

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Akpu, N.I., Asiegbu, A.D., Nnanna, L.A. et al. Influence of Substrate Temperature on the Photovoltaic/Optoelectronic properties of Spray-Synthesized Yttrium Copper Selenide (YCS) Thin Films. Arab J Sci Eng 47, 7639–7646 (2022). https://doi.org/10.1007/s13369-021-06455-0

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  • DOI: https://doi.org/10.1007/s13369-021-06455-0

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