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<p>In this work, a NiO:Co thin film is employed as a buffer layer in the back contact of a ZnO/CdS/CdTe-based solar cell. The structure of the solar cell is ITO/ZnO/CdS/CdTe/NiO:Co/Ag. The NiO:Co thin film was synthesized using the radio frequency (RF) sputtering technique. Numerical simulations show that the introduction of NiO:Co as a buffer layer significantly enhances the efficiency of CdTe-based thin film solar cell. Furthermore, the experimental incorporation of the thin layer improved device performance considerably. Optimized deposition of NiO:Co, based on our previous work, led to a marked increase in the cell's current density from <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(3.46\times {10}^{-4}\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>3.46</mn> <mo>×</mo> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>-</mo> <mn>4</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation> to 0.1 mA/cm<sup>2</sup> and open-circuit voltage from 294 to 600 mV. As a result, the power conversion efficiency (PCE) improved from <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(4.45 {10}^{-5 }\)</EquationSource> <EquationSource Format="MATHML"><math> <mrow> <mn>4.45</mn> <msup> <mrow> <mn>10</mn> </mrow> <mrow> <mo>-</mo> <mn>5</mn> </mrow> </msup> </mrow> </math></EquationSource> </InlineEquation> to 0.025%.</p>

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Effect of NiO:Co thin film as buffer in the back contact of the CdTe solar cell

  • 期刊论文

  • 发表日期：

    2025年8月28日

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  • S. Elmassi,
  • A. Alsaad,
  • M. Ourbaa,
  • M. Baali,
  • L. Amiri,
  • M. Bousseta,
  • C. -T. Liang,
  • S. Drissi,
  • A. Narjis,
  • L. Nkhaili,
  • A. El Kissani

摘要

In this work, a NiO:Co thin film is employed as a buffer layer in the back contact of a ZnO/CdS/CdTe-based solar cell. The structure of the solar cell is ITO/ZnO/CdS/CdTe/NiO:Co/Ag. The NiO:Co thin film was synthesized using the radio frequency (RF) sputtering technique. Numerical simulations show that the introduction of NiO:Co as a buffer layer significantly enhances the efficiency of CdTe-based thin film solar cell. Furthermore, the experimental incorporation of the thin layer improved device performance considerably. Optimized deposition of NiO:Co, based on our previous work, led to a marked increase in the cell's current density from \(3.46\times {10}^{-4}\) 3.46 × 10 - 4 to 0.1 mA/cm2 and open-circuit voltage from 294 to 600 mV. As a result, the power conversion efficiency (PCE) improved from \(4.45 {10}^{-5 }\) 4.45 10 - 5 to 0.025%.