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The hybrid metal-dielectric nanostructures (HMDN) are promising candidates toaddress the ohmic loss by conventional nanostructures in photovoltaicapplications by strong confinement and high scattering directivity. In thisstudy, we present a c-Si/TiO$_2$ heterojunction thin film solar cell (TFSC)where a pair of triangular HMDN comprised of Ag and AZO was utilized to enhancethe longer wavelength light absorption. The presence of the TiO$_2$ invertedpyramid layer, in combination with the ITO and SiO$_2$-based pyramid layers atthe front, enhanced the shorter wavelength light absorption by increasing theoptical path and facilitating the coupling of incoming light in photonic mode.Consequently, the average absorption by 1000 nm thick photoactive layer reached83.32 % for AM 1.5G within the wavelength range of 300 - 1100 nm which wasinvestigated by employing the finite-difference time-domain (FDTD) method. Theelectric field profile and current density profile demonstrated the respectivecontributions of each layer in the absorption of light at shorter and longerwavelengths. The structure exhibited a short circuit current density ($J_{sc}$)of 37.96 mA/cm$^2$ and a power conversion efficiency ($PCE$) of 17.42 %. Theefficiency of our proposed structure experienced a maximum relative change of0.34 % when a polarized light was exposed with an angle of 0$^\circ$ to90$^\circ$. The incorporation of self-heating in non-isothermal conditionsreduced $PCE$ by $13.77 \%$. In addition, the comparative analysis to assessthe impact of HMDN on our structure revealed a $4.54 \%$ increase in $PCE$ ofthe structure with metallic nanostructures, paving the way for the utilizationof HMDN to enhance the performance of TFSC.

Efficiency Enhancement of c-Si/TiO$_2$ Heterojunction Thin Film Solar Cell Using Hybrid Metal-Dielectric Nanostructures