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<p>In this work, a novel metal-doped nanocomposite layer (Cu-WO<sub>3</sub>) based 1D photonic crystal (PhC) is proposed as back reflector to enhance the photoconversion efficiency (PCE) of DSSCs. The transfer matrix method is used in analysing the optical properties of the proposed PhC and simulation is done using MATLAB software. From the transmittance spectra, it is evident that the photonic bandgap is enhanced in the visible wavelength spectrum as the Cu-doping in the WO<sub>3</sub> matrix is increased. Then,&#xa0;a TiO<sub>2</sub>-based DSSC is theoretically designed, and its parameters are determined with and without the&#xa0;Cu-WO<sub>3</sub>/LiF PhC back reflector, and further calculated for various Cu-doping. The enhanced solar cell parameters such as J<sub>SC</sub>, V<sub>OC</sub> and PCE are 7.374&#xa0;mA/cm<sup>2</sup>, 0.88&#xa0;V and 5.24% respectively, for the&#xa0;DSSC with 10% Cu-doped PhC back reflector, makes it a potential candidate for eco-friendly, cost-effective back reflector for DSSCs.</p>

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Metal-doped nanocomposite based 1D photonic crystal back reflector for enhanced photoconversion efficiency in DSSC

  • 期刊论文

  • 发表日期：

    2026年1月10日

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  • G. Amal Sundar,
  • K. S. Joseph Wilson

摘要

In this work, a novel metal-doped nanocomposite layer (Cu-WO3) based 1D photonic crystal (PhC) is proposed as back reflector to enhance the photoconversion efficiency (PCE) of DSSCs. The transfer matrix method is used in analysing the optical properties of the proposed PhC and simulation is done using MATLAB software. From the transmittance spectra, it is evident that the photonic bandgap is enhanced in the visible wavelength spectrum as the Cu-doping in the WO3 matrix is increased. Then, a TiO2-based DSSC is theoretically designed, and its parameters are determined with and without the Cu-WO3/LiF PhC back reflector, and further calculated for various Cu-doping. The enhanced solar cell parameters such as JSC, VOC and PCE are 7.374 mA/cm2, 0.88 V and 5.24% respectively, for the DSSC with 10% Cu-doped PhC back reflector, makes it a potential candidate for eco-friendly, cost-effective back reflector for DSSCs.