Abstract
In this work, gold nanoparticles (Au NPs)/indium-zinc-oxide (IZO) nanocomposite visible photodetector (PD) is directly prepared by near-infrared (NIR) laser-annealing on a 3D-printed substrate to form an integrated colorimetric sensor. After a surface planarization process, using a low power laser treatment without damaging the substrate, Au NPs are formed from the Au thin layer (6 nm) on 3D-printed resin substrate by laser-assisted dewetting process. Also, the UV–vis photoresponsivity is compared by tuning different NIR laser power intensity for sol-gel IZO curing. By investigating the temperature profile of each laser annealing process and the surface morphology of Au NPs/IZO nanocomposite film, the optimized PD is then integrated with a 3D-printed sensing chamber for successfully demonstrating urea detection varied from 1, 5, 10, 25 and 50 × 10−3 m, which refer to the salivary urea concentrations for healthy and chronic kidney disease groups.
Original language | English |
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Article number | 2201026 |
Journal | Advanced Materials Technologies |
Volume | 8 |
Issue number | 4 |
DOIs | |
State | Published - 24 Feb 2023 |
Keywords
- colorimetric sensing
- laser annealing
- metal oxide semiconductor
- photodetector
- sol-gel
- surface plasmon resonance