<p dir="ltr">Multiresonant Ag–Si:B–Ni bowtie cross nanoantenna (BCN) arrays that exploit plasmon-enhanced photothermal effects to achieve broadband MIR absorption and voltage generation via the Seebeck effect. COMSOL simulations reveal strong field confinement and open-circuit voltages up to 11.19 μV under 1000 W·m⁻² illumination.</p>