4:15 PM - 4:45 PM
[13p-C302-7] Monolithic Fabrication of Ni-W Absorber/Emitter for Solar Thermophotovoltaic
Keywords:STPV, Ni-W, electroplating
A novel monolithic fabrication process of a solar light absorber and selective thermal emitter for solar thermophotovoltaic power generation (STPV) is studied. Metallic microcavity structure made of heat-resistive NiW alloy is adopted to modify spectral emissivity of both absorber and emitter. A free-standing NiW thin film which has microcavities on its both sides with different dimensions is fabricated through two-step deep reactive ion etching of silicon, NiW electroplating, and silicon lost molding. The fabricated NiW film exhibits different spectral emissivities between both sides.