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[IEEE 2018 IEEE 21st International Multi-Topic Conference (INMIC) - Karachi, Pakistan (2018.11.1-2018.11.2)] 2018 IEEE 21st International Multi-Topic Conference (INMIC) - Silica Nano-Particulate Coating Having Self-Cleaning and Antireflective Properties for PV Modules
摘要： In this research, silica nanoparticles are coated over the solar PV module glass to acquire super hydrophilic, antireflective and highly transparent surface. Silane precursor mixed with air sprayed on the substrate by aerosol deposition method. Pressure difference between the plasma chamber and the substrate is tuned by the introduction of helium gas, which results in good control over layer thickness and refractive indices. Due to the porous nature and graded index of coated film, the transmittance of glass substrate is increased from 91% to 99.2%. Surface topology of coated film is studied by AFM shows excellent antifogging and super-hydrophilic nature attributed to roughness and nano-porosity of coated film. Moreover, the super-hydrophilic nature endows these coatings with self-cleaning properties, which further enhances the overall efficiency of solar PV modules.
关键词： Antireflective coatings,Super-hydrophilic,Silica nanoparticles,Thin films,solar PV,Aerosol deposition,Nano-porous
更新于2025-09-23 15:22:29
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Preparation of ZnO-carbon quantum dot composite thin films with superhydrophilic surface
摘要： Carbon quantum dots (CQDs)-ZnO composite thin films were prepared via ultrasonic mist vapour deposition (UMVD) method. The effect of different CQDs concentrations (C), substrate temperatures (Ts), nozzle-substrate distances and also post-annealing process on the thin film structure were considered and examined systematically. The effects of these parameters on optical, morphological and surface properties of the layers as well as their wettability were carefully investigated and discussed. It was found that for low Ts and short ‘d’, CQDs diffuse inside the layer during deposition and then were evaporated after annealing process making drastic changes in layer morphology and optical transmittance. On the other hand, for high Ts and long ‘d’, most of CQDs inside mist vapour drops are evaporated during deposition process. Therefore, the layer transmittance and morphology did not change notably after annealing. Interestingly, the layer prepared with C = 5 volume %, Ts = 470 °C and d = 9 cm was turned to super-hydrophilic surface after annealing process with contact angle of , 3o. Such a super-hydrophilic CQDS-ZnO thin film is highly beneficial for a wide range of applications which high wettability is required.
关键词： mist vapour deposition,super-hydrophilic,ZnO thin film,Carbon quantum dots
更新于2025-09-23 15:21:01