Ultrathin a‐Si:H/Oxide Transparent Solar Cells Exhibiting UV‐Blue Selective‐Like Absorption

Herein, the fabrication of transparent solar cells based on nanometric (8 and 30 nm) intrinsic hydrogenated amorphous silicon films (a-Si:H) using oxide thin as carrier selective contacts are reported. The ultrathin devices present photovoltaic effect high average visible transmittance (AVT). Additionally, they display a shifted spectral response toward short wavelengths. Glass/fluorine-doped tin (FTO)/aluminum-doped zinc (AZO)/a-Si:H/MoO3/indium (ITO) prototypes shown, presenting AVT = 35% conversion efficiency (PCE) 2% for device with nm a-Si:H film. This yields light utilization (LUE) 0.7%, record up to this date inorganic oxide-based cells. For including an 8 film, reaches 66% PCE 0.6% (LUE 0.4%). These values comparable or even superior in some cases those achieved pure devices. findings confirm potential proposed architectures development highly energy harvesters functional components building-integrated photovoltaics (BIPV), agrophotovoltaics (APV), sensors other low-power In addition, these fabricated earth-abundant materials up-scalable techniques that can allow feasible implementation.